Tropical Storm Fay May End Up in the Record Books
August 22, 2008

for a more recent update on fay and the other systems CLICK HERE.

To Track Fay via radar imagery, you can click on this Interactive Radar (Click Here) and zoom in, loop and navigate anywhere in the state of Florida or the entire nation.

Spaghetti graph keep the storm along the Gulf Coast. That would suggest Fay Spaghetti Model 0822 18Z

Fay Spaghetti Model 0822 18Z
Fay 5PM Forecast Track 5pm 0822

Fay 5PM Forecast Track 5pm 0822

that the big fat ridge is getting bigger and fatter. As it stands, the NHC follows a track similar to what has been forecast with a curvature and rain out in northern Louisiana and North Mississipppi. But, for days now I have

suggested that the legacy of this storm would be rain and that has far exceeded even my expectations. The National Weather Service is warning people of the Florida Panhandle that this storm could cause flooding akin to what happened in 1964 with Dora that followed a similar path. I would suggest that, if

rain totals are the same then the flooding would be greater given there has been more urban development US Tropical Cyclone Deaths

US Tropical Cyclone Deaths

in the various watersheds. If you look at the pie chart, you will see that inland, freshwater flooding is the greatest cause of fatalities with tropical cyclones in the United States. Even more than the storm surge. The media tends to focus on the winds but often, a weaker tropical storm or even depression has caused tremendous damage. Recently, the Houston area was inundated by Allison,

Invest 94L Spaghetti Model

Invest 94L Spaghetti Model

 

 

Here is the 5pm Aug 22 Discussion from the National Hurricane Center for Fay:

TROPICAL STORM FAY DISCUSSION NUMBER 29 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL062008 500 PM EDT FRI AUG 22 2008 THE LARGE CIRCULATION OF FAY HAS CONTINUED TO MOVED WESTWARD ACROSS NORTHERN FLORIDA. MOST OF THE TROPICAL STORM FORCE WINDS ARE OCCURRING WITHIN RAIN BANDS MOSTLY OVER WATER. INITIAL INTENSITY IS KEPT AT 40 KNOTS BUT A GRADUAL SPIN DOWN IS ANTICIPATED. BECAUSE A PORTION OF THE CIRCULATION IS EXPECTED TO REMAIN OVER WATER…FAY COULD MAINTAIN TROPICAL STORM STRENGTH DURING THE NEXT 12 TO 24 HOURS. THE CENTER OF FAY HAS BEEN MOVING TOWARD THE WEST OR 275 DEGREES AT 4 KNOTS AROUND A HIGH PRESSURE SYSTEM CENTERED OVER THE NORTHEASTERN UNITED STATES. GLOBAL MODELS INDICATE THAT THIS STEERING PATTERN SHOULD HOLD FOR THE NEXT 2 TO 3 DAYS…FORCING FAY TO CONTINUE ON A GENERAL WESTWARD TRACK. THEREAFTER…STEERING CURRENTS ARE FORECAST TO COLLAPSE AND FAY COULD BEGIN TO MEANDER. BY THEN…FAY IS EXPECTED TO BE A REMNANT LOW. REGARDLESS OF ITS EXACT TRACK…FAY WILL BE MOVING RATHER SLOWLY DURING THE NEXT SEVERAL DAYS…POSING A SIGNIFICANT HEAVY RAINFALL AND FLOOD HAZARD TO A VERY LARGE AREA. FORECAST POSITIONS AND MAX WINDS INITIAL 22/2100Z 29.8N 83.2W 40 KT 12HR VT 23/0600Z 29.9N 84.1W 40 KT 24HR VT 23/1800Z 30.2N 85.9W 35 KT…INLAND 36HR VT 24/0600Z 30.5N 87.5W 30 KT…INLAND 48HR VT 24/1800Z 31.0N 89.0W 30 KT…INLAND 72HR VT 25/1800Z 31.0N 90.0W 30 KT…INLAND 96HR VT 26/1800Z 31.5N 90.5W 25 KT…INLAND 120HR VT 27/1800Z 32.0N 91.6W 20 KT…REMNANT LOW $$ FORECASTER AVILA

Fay 5PM Forecast Track 5pm 0822

Florida Rainfall 8/15 to 8/22

Fay 5PM Forecast Track 5pm 0822

Tropical Storm Fay The Rainmaker; Invest 94L Lurking
August 20, 2008

for a more recent update on fay and other items of interest in the tropics, CLICK HERE

To Track Fay via radar imagery, you can click on this Interactive Radar (Click Here) and zoom in, loop and navigate anywhere in the state of Florida or the entire nation.

Official NHC Fay forecast track 5pm 0820

Official NHC Fay forecast track 5pm 0820

Fay is behaving badly, but not unexpectedly. I told you several days ago that I

Fay Spaghetti model track 18Z 0820

Fay Spaghetti model track 18Z 0820

figured that the legacy would be heavy rain and that is bearing out.  I had thought though that it would be about 75 to 100 miles farther north, and that may still bear out.  It slowed so much over the peninsula that while it was dawdling, the ridge was building in.  Now, it will start to be influenced from the ridge in a place farther south than the previous official forecast.  While the official track takes it slowly across north Florida and to the northwest, it is not totally out of the question for the storm to move west and re-emerge over the Gulf of Mexico before swinging back to the west-northwest and northwest.  It still has a pretty good looking structure on satellite and pressures started dropping and winds increasing the second it got offshoe, but the official forecast is for it to run out of time and stay below the hurricane threshold before moving back ashore.  While the general scenario is becoming relatively clear and it will continue to be a big rain maker with winds having a marginal effect except for the occasional tornado, the exact track over the next 48 hours is still beyond the ability of mankind.  You can tell the level of uncertainty in that the “cone” is actually a giant circle on the official forecast track. Here is the discussion from the boys at the Melbourne office of the NWS.  Hydrometeorological models indicate that 30 inches of rain could fall in some areas.  The map above is the late afternoon storm totals of the region.  Some areas northwest of Melbourne have received over 24″ of rain and Melbourne had officially received over 16″. 

DISCUSSION…

…EXTREME FLOODING DANGER CONTINUING IN SOUTH BREVARD…
…TRAVEL IS NOT RECOMMENDED!!!…

TONIGHT…THE CENTER OF TROPICAL STORM FAY CONTINUES TO DRIFT NORTH
AND ACCORDING TO THE WIND TOWERS AT CAPE CANAVERAL…THE CENTER WAS
JUST ALONG THE NORTH SIDE AT THE COAST.  HOWEVER…A CONVERGENCE
ZONE CONTINUED TO THE SOUTH OF THE CENTER AND WAS RESULTING IN A
PERSISTENT BAND OF SHOWERS PRODUCING HEAVY RAINFALL.  AMOUNTS ARE
BEING MEASURED IN FEET…WITH ONE REPORT IN NORTH MELBOURNE OVER 24
INCHES AND SEVERAL OTHER SPOTS AROUND MELBOURNE AT 16-18 INCHES.
THESE RAIN AMOUNTS ARE EASILY RECORDS AND WILL TURN OUT TO BE
HISTORICAL FOR THE LOCAL AREA.  THE HYDROMETEOROLOGICAL PREDICTION
CENTER ANTICIPATES STORM TOTALS NEAR 30 INCHES IN A FEW SPOTS.

THE RESULTING FLOODING HAS PRODUCED LIFE THREATENING FLOODING IN
SOUTH BREVARD…ESPECIALLY MELBOURNE…AND CONTINUES TO BE THE MAIN
HAZARD IN THE SHORT TERM.

THE CENTER OF FAY IS FORECAST TO CONTINUE DRIFTING SLOWLY NORTH
THROUGH THIS EVENING…WITH A TURN TO THE NORTHWEST TONIGHT INTO THE
VOLUSIA COUNTY COAST.

Tropical Disburbance 94L:  It is important to note that the National Hurricane Center is not showing

Invest 94L Spaghetti Intensity Graph 18Z 0820

Invest 94L Spaghetti Intensity Graph 18Z 0820

Invest 94L Spaghetti Model 18Z 0820

Invest 94L Spaghetti Model 18Z 0820

much enthusiasm for this feature at this time, making statements that slow development is possible. The Spaghetti models above continue to indicate a motion taking it north of the islands.  However, it is interesting to note that the spaghetti model intensity graphs continues to show some models wanting to take it to hurricane status, with a few even to category II.  It will be interesting to see how this guy develops.

Fay Ready To Re-Emerge In The Atlantic…and Then Re-Intensify?
August 20, 2008


Use this National Interactive Radar (Click Here)to navigate to Fay’s location. You can make a radar loop of fay by hitting “animate” add clouds, see analysis that will show what direction and speed the individual cells are moving as well as indicate if there is any potential tornadic activity. You can also put in watch boxes. It defaults to the Ohio Valley but its easy to slide to Fay or anywhere else you want to look.

Naval Research Lab NHC Fay Fcst track 0819 11pm

Naval Research Lab NHC Fay Fcst track 0819 11pm

My general thinking has not changed much and neither has the thinking of the NHC. If you look at the spaghetti model chart for Fay, you can see why. There isn’t a whole lot of difference between the 00Z run and the 18Z run. If you want to know what I was thinking, look at the previous posting on Fay, just before the one on Mr. Fisher. The intensity graph hasn’t changed much either but you can refer to that if you want to determine what the NHC is talking about in the discussion. On a side

Invest 94L Spaghetti model track 00Z 0820

Invest 94L Spaghetti model track 00Z 0820

note, the tropical disturbance, aka Invest 94L, still has the same general track of the models as previous runs. The track graphic supplied by the Naval Research Lab was not available. The NHC had been issuing pessimistic reports for 94L but the last two have provided more wiggle room for development. You will notice some very erratic tracks on the map. That tells me that the models don’t have a very good handle on this system yet. Here is the National Hurricane Center Fay Discussion for 11PM Tuesday:

Fay Spaghetti Model 00Z 0820

Fay Spaghetti Model 00Z 0820

TROPICAL STORM FAY DISCUSSION NUMBER 18 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL062008 1100 PM EDT TUE AUG 19 2008 AFTER FAY’S UNEXPECTED STRENGTHENING EPISODE OVER THE FLORIDA PENINSULA EARLIER TODAY…THE STORM IS NOW BEHAVING IN A MORE NORMAL FASHION. THE SATELLITE AND RADAR PRESENTATION HAS DEGRADED…WITH THE EYE NO LONGER EVIDENT…AND SURFACE OBSERVATIONS SUGGEST THAT THE MAXIMUM WINDS HAVE DECREASED TO AROUND 45 KT. FAY WILL PROBABLY WEAKEN A LITTLE MORE WHILE ITS CENTER IS OVER LAND. THE UPPER-LEVEL OUTFLOW PATTERN AS DEPICTED BY ANIMATED WATER VAPOR IMAGERY IS QUITE IMPRESSIVE. THEREFORE FAY IS LIKELY TO COMMENCE RESTRENGTHENING WHEN IT MOVES BACK OVER WATER ON WEDNESDAY. THE OFFICIAL INTENSITY PREDICTION IS SIMILAR TO THE LATEST SHIPS FORECAST. IT SHOULD BE NOTED THAT

Fay Spaghetti Intensity Graph 00Z 0820

Fay Spaghetti Intensity Graph 00Z 0820

BOTH THE GFDL AND HWRF MODELS SHOW MORE STRENGTHENING THAN INDICATED BY THE OFFICIAL FORECAST. OF COURSE…THE FUTURE INTENSITY OF FAY IS ALSO STRONGLY DEPENDENT ON HOW LONG THE CENTER STAYS OVER WATER. RADAR FIXES SHOWED THAT FAY NEARLY STALLED A FEW HOURS AGO…AND THEN WOBBLED A LITTLE TO THE EAST. CURRENTLY IT APPEARS THAT THE CENTER IS BACK ON A NORTH-NORTHEASTWARD TRACK…OR 030/4. GLOBAL MODELS CONTINUE TO INDICATE A BUILDING 500 MB RIDGE TO THE NORTH OF FAY OVER THE NEXT 1 TO 2 DAYS. THIS EVOLUTION OF THE STEERING PATTERN WOULD BEGIN TO BLOCK THE NORTHWARD PROGRESS OF THE TROPICAL CYCLONE WITHIN ABOUT 48 HOURS. TRACK MODELS ARE IN FAIRLY GOOD AGREEMENT THAT FAY WILL TURN BACK TOWARD THE COAST AFTER MOVING JUST OFFSHORE. THERE HAS NOT BEEN MUCH CHANGE TO THE NHC TRACK FORECAST ON THIS PACKAGE. THIS IS CLOSE TO OR A LITTLE SOUTH OF THE DYNAMICAL MODEL CONSENSUS. FORECAST POSITIONS AND MAX WINDS INITIAL 20/0300Z 27.7N 80.7W 45 KT 12HR VT 20/1200Z 28.4N 80.3W 50 KT 24HR VT 21/0000Z 29.0N 80.2W 60 KT 36HR VT 21/1200Z 29.5N 80.8W 65 KT 48HR VT 22/0000Z 29.9N 81.7W 65 KT…INLAND 72HR VT 23/0000Z 30.5N 83.5W 30 KT…INLAND 96HR VT 24/0000Z 31.0N 85.5W 25 KT…INLAND 120HR VT 25/0000Z 32.0N 87.5W 20 KT…INLAND…REMNANT LOW $$ FORECASTER PASCH

Tropical Storm Fay Still A Bit Mysterious But Certainly a Rain Maker
August 19, 2008

For a more recent update on Tropical Storm Fay, click here.

For a national interactive radar to navigate to street level and loop tropical storm Fay, ClICK HERE It defaults to the Ohio Valley but can be moved anywhere in the nation.

The general forecast remains in tact. The NHC is mentioning the possibility of the the storm regenerating

NHC Fay fcst track 11AM 0819

NHC Fay fcst track 11AM 0819

if it moves back offshore. Given the current structural integrity of the storm as it moves across Florida, which indicates to me that they feel like its a legitimate

Fay Spaghetti Model 12Z 0819

Fay Spaghetti Model 12Z 0819

concern. So, folks on the SE coast from Jacksonville to Savannah to Myrtle Beach may not only get heavy, persistent rain and wind but also the potential for higher tides will be increased. They needed rain in much of the area and there will be a great benefit from this storm but in some cases it may be a case of “be careful for what you wish for.” As you can tell from the Spaghetti model there is still quite a bit of disagreement in the models. Many scenarios still remain and the future of Fay probably won’t show itself for a couple of days.

As for Invest 94L, the NHC is not completely confident in any rapid development with the system as they

Invest 94L Spaghetti Model 12Z 0819

Invest 94L Spaghetti Model 12Z 0819

conclude that while there is some opportunity for some organization in the short term, in the longer term the upper support becomes poor. Nonetheless, the

Invest 94 Spaghetti Intensity Graph 12Z 0819

Invest 94 Spaghetti Intensity Graph 12Z 0819

spaghetti models continue to move the storm generally northwest to the north of Puerto Rico or around the Domincan Republic. Meanwhile the disconnect continues with the Naval Research Lab has a tropical storm moving into the Caribbean. Not sure if I understand that divergent conclusion. Anyway, 3 of the models on the Spaghetti graph take the intensity to hurricane status in the next few days, which is interesting. Nevertheless, it deserves attention over the next few days. Here is the NHC Fay 11AM Tuesday discussion.

TROPICAL STORM FAY DISCUSSION NUMBER 16
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL062008
1100 AM EDT TUE AUG 19 2008

DOPPLER RADAR DATA AND SATELLITE IMAGES REVEAL THAT FAY HAS KEPT A
WELL DEFINED PATTERN…AND IN FACT…RADAR SHOWS A RING OF
CONVECTION WHICH RESEMBLES AN EYE FEATURE. DOPPLER VELOCITIES
SUPPORT AN INITIAL INTENSITY OF 50 KNOTS AND BASED ON SURFACE
OBSERVATIONS THE MINIMUM PRESSURE IS ESTIMATED AT 986 MB. FAY IS
FORECAST TO WEAKEN AS IT MOVES OVER LAND FOR THE NEXT 12 TO 18
HOURS. THEREAFTER…IT SHOULD REGAIN SOME STRENGTH DURING THE 24 TO
48 HOUR PERIOD WHEN FAY IS FORECAST TO BE OVER WATER JUST OFF THE
FLORIDA EAST COAST. IF FAY MAINTAINS ITS CURRENT STRUCTURE ON
RADAR…THE RATE OF INTENSIFICATION COULD BE HIGHER THAN INDICATED.
AT THIS TIME…THE FORECAST INTENSITY FOLLOWS CONTINUITY AND THE
SHIPS INTENSITY MODEL. THE GFDL IS VERY AGGRESSIVE AND MAKES FAY A
STRONGER CYCLONE OVER THE WATER JUST EAST OF NORTH FLORIDA. DO NOT
RULE OUT THIS POSSIBILITY YET.

FAY IS MOVING TOWARD THE NORTH-NORTHEAST OR 015 DEGREES AT 8 KNOTS
WHILE EMBEDDED WITHIN A MID-LATITUDE TROUGH. HOWEVER…THIS TROUGH
IS FORECAST TO LIFT OUT AND BE REPLACED BY A DEVELOPING RIDGE. THIS
PATTERN SHOULD FIRST WEAKEN THE STEERING CURRENTS..CAUSING FAY TO
SLOW DOWN AND THEN…AS THE RIDGE BECOMES STRONGER…THE CYCLONE
SHOULD TURN MORE TO THE WEST-NORTHWEST TOWARD THE NORTH FLORIDA OR
THE GEORGIA COAST. THE OFFICIAL FORECAST IS CONSISTENT WITH MODEL
GUIDANCE AND VERY CLOSE TO THE MODEL CONSENSUS. GUIDANCE
UNANIMOUSLY TURNS THE CYCLONE TOWARD THE COAST OF NORTH FLORIDA OR
GEORGIA.

FORECAST POSITIONS AND MAX WINDS

INITIAL 19/1500Z 26.7N 81.3W 50 KT…INLAND
12HR VT 20/0000Z 27.9N 80.9W 45 KT…INLAND
24HR VT 20/1200Z 28.9N 80.6W 40 KT…OVER WATER
36HR VT 21/0000Z 29.5N 80.5W 45 KT…OVER WATER
48HR VT 21/1200Z 30.0N 80.9W 45 KT…OVER WATER
72HR VT 22/1200Z 30.6N 82.5W 30 KT…INLAND
96HR VT 23/1200Z 31.0N 84.0W 25 KT…INLAND
120HR VT 24/1200Z 31.5N 86.0W 20 KT…REMNANT LOW

$$
FORECASTER AVILA

Tropical Storm Fay, Febb and Lemonade Lucy
August 19, 2008

For a more recent update on Fay, please click here.

Track Tropical Storm Fay using this National Interactive Radar(Click Here). Navigate anywhere in the country to street level if you like. Hit “animate” to loop the image. It updates about every 5 minutes.

Fay 11pm NHC fcst track 0818

Fay 11pm NHC fcst track 0818

Tropical Storm Fay is rather interesting and perplexing. It is wandering slowly

Fay Spaghetti Model 00Z 0819

Fay Spaghetti Model 00Z 0819

along the SW Florida Coast. It has actually dropped by a few millibars to 995 mb so technically its getting stronger though pragmatically its not changing much. The biggest bugaboo about this guy will be the rain. I’ve been telling you all along that it may prove to be quite beneficial in that it will bring a lot of rain to drought plagued areas. That seems certain. Only trouble is that eventually it may bring too much of a good thing. So many questions…The trof that has steered the storm northward may be breaking up somewhat and a ridge from the northeast building in. As I have stated, there were several models that wanted to take the storm to the northwest and I suppose they were picking up on the ridge building in and picking the storm up to the northwest. Some still have a variance of that forecast. Others seem to have picked up on that but instead,

Fay Spaghetti Ensemble models 18Z 0818

Fay Spaghetti Ensemble models 18Z 0818

the ridge builds in a bit more gradually and so the storm drifts north into Georgia or maybe even off the Florida Atlantic coast and then stall it followed by a movement back to the west, either through the southern Dixie states or even back into the Gulf. The NHC on Sunday night were all for taking the storm rapidly north as the ridge built in. But the data changed dramatically and by Monday, they began backing off that as numerous models advertised a big eastern ridge building in. So, they slowed the storm on the forecast and each successive forecast stifled its northern track. See, for long term forecasts, the tendency is to trend toward a new solution rather than just make a huge jump from one forecast to another. So, now they take it to Jacksonville before starting to swing it west which is similar to what I think that the data supports. After looking at stuff all day it seemed to me that the storm goes up to the SE Georgia coast, sits there and slowly goes west filling Lake Lanier and the Okefenokee Swamp before phasing with other systems. Now the NHC has trended to a similar solution. However, this is very very difficult and if you want to go nuts, look at the spaghetti model and then if you want to get really dizzy, look at the spaghetti of the ensembles. This is tough and is stretching the limits of human ability.

Many of the scenarios are still in play due to all of the variables and “if this then that” stories, I think it is most likely that this system will be remembered by the rain totals. In academic circles it will be its track. If it comes back into the Gulf and gets new life, then that will be an interesting epilogue.

On This Date in History: In the Summer of 1920, the passage of the 19th Amendment giving women the right to vote was very much in doubt. Only one more state legislature had to ratify the amendment but the remaining states were in limbo. It was called the war of the roses. Supporters of the amendment, the “Suffs” which was short for “suffragists”, wore yellow roses while those opposed, or the “Antis” clung to a red rose. On August 18 in Tennessee, a vote was taken and it resulted in a tie. Young legislator Harry Burn was from the “anti” county of McMinn and he wore a red rose. But, it seems young Burn got a letter from his mother Febb Ensminger Burn who told her son to be a good boy and help put the “rat” in ratification and so on the second vote, he changed his vote, the amendment passed on this date in 1920, when the sun rose, women had gained the right to vote. Burn said, “I know that a mother’s advice is always safest for a boy to follow.” So, all you ladies out there should lift a glass to Febb….and hope the World Meteorological Organization doesn’t find out and call a hurricane Febb.

If you were in the White House of Lucy Hayes, the glass you lifted would have been the unleaded version. President Rutherford B. Hayes was no teetotaler but his administration followed that of President Grant whose White House had been assumed to be flowing with Whiskey. Hayes wanted to distance himself from the reputed Whiskey-soaked, scandal-ridden Grant and he had a wife, Lucy, who was big into the temperance movement. So, On This date in 1877, booze was banned at the White House and Lucy became known as “Lemonade Lucy.” The hired help though thought that they had put one over on the President and his wife.

See the chef made a “Roman Punch” part of the daily meal with a hollowed out orange filled with some sherbet-like concoction. Many a Senator was quite relieved when the tasted the brew because they were convinced it was filled with as much rum it could possibly hold. But, the president had the last laugh. Hayes wrote in his diary that he had ordered that the staff fill the punch “strongly with the same flavor that is found in Jamaica rum…There was not a drop of spirits in them!” Yes, indeed….quite the clever man that Rutherford B. Hayes. Too bad he wasn’t as clever in doing his job. After one term, the sitting president was unable to secure the nomination from his own party, losing out to eventual Republican President James Garfield. But, it’s a lesson to the kids…don’t ever think you can pull one over on the old man!

Tropical Storm Fay’s Future Clouded
August 18, 2008

for a more recent update on fay, click here

Track Fay’s Progress 24/7 by clicking on this US Interactive Radar (click here) that allows you to loop the image and zoom to any location in the nation to street level. Find out the weather for friends and relatives along Fay’s path or anywhere else in the country. There is also computer derived analysis of individual storms.

Fay is pretty much going on schedule but that will change soon. It crossed Key West at about

Fay NHC track NRL Graphic 5 pm 0818

Fay NHC track NRL Graphic 5 pm 0818

3PM and winds went calm there at that time. So, there was some sort of eye and the pressure had dropped to 998mb with the late afternoon

Fay Spaghetti  Track Model 0818 18Z

Fay Spaghetti Track Model 0818 18Z

Hurricane Hunter pass. It is trying to intensify and will get close to minimal hurricane status just prior to landfall near Ft. Myers. It takes a track similar to Charlie toward Jacksonville. After that, its way up in the air. Several models want to take it back to the west in the SE US. Couple want to take it back to the Gulf and some take it into the Atlantic. Others want to stall it in Georgia and the boys at the NHC keep going along with the ones that take it well inland though a building ridge will make that difficult. The official track starts to curl it around but I suspect that what will happen is that this guy slows down to a crawl in North Florida or South Georgia as it gets blocked by the high building in from the northeast. That in turn will drive it west. It will be interesting if it ends up back in the Gulf for redevelopment. It’s not necessarily probable but not totally out of the question. Bottom line is that there will be a lot of rain in the SE and I’m sure that Lake Lanier will be getting plenty of water so we don’t have to hear from the Weather Channel about that subject any more. Sometimes I think that they act like the whole world revolves around Atlanta.

Invest 94L NRL fcst track 0818 5pm

Invest 94L NRL fcst track 0818 5pm

Also…interesting situation with Invest 94L. Its a disturbance way out there. The Naval Research Lab track still maintains that it will be a

Invest 94L Spaghetti Model Track 0818 18Z

Invest 94L Spaghetti Model Track 0818 18Z

tropical storm heading toward the Yucatan Channel. The spaghetti models insist on a storm developing and moving north of Puerto Rico. That is a wide berth. But, I think the important thing is that both scenarios have a another developing tropical cyclone and all interests should pay attention. There is a weird weather pattern going on in the Lower 48 that is more reminscent of late hurricane season toward the fall. Fay didn’t behave as one might expect for August and this next guy that will probably become Gustav seems likely to misbehave as well.

Here is the 5pm discussion for Fay on August 18 from Jack Beven at the NHC.

TROPICAL STORM FAY DISCUSSION NUMBER 13
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL062008
500 PM EDT MON AUG 18 2008

SATELLITE…RADAR…AND AIRCRAFT DATA INDICATE THAT FAY HAS BECOME
BETTER ORGANIZED THIS AFTERNOON. THE CONVECTIVE BANDING HAS
INCREASED AROUND THE CENTER…AND THE RADIUS OF MAXIMUM WINDS HAS
CONTRACTED TO ABOUT 30 N MI. ADDITIONALLY…THE CENTRAL PRESSURE
HAS FALLEN TO 998 MB. HOWEVER…THIS HAS NOT YET CAUSED THE WINDS
TO INCREASE…AS AIRCRAFT…RADAR…AND SURFACE DATA SUGGEST THE
MAXIMUM WINDS REMAIN ABOUT 50 KT. IT SHOULD BE NOTED THAT A TCU
WAS ISSUED NOTING LANDFALL WHEN THE WINDS AT KEY WEST WENT CALM AT
3 PM. LATER DATA SUGGESTS THIS WAS DUE TO A MESOSCALE FEATURE
ROTATING AROUND THE LARGER CENTER OF THE STORM…AND THE TRUE
CENTER OF FAY IS OVER KEY WEST NOW.

THE INITIAL MOTION IS 340/10. FAY IS ENTERING A BREAK IN THE
SUBTROPICAL RIDGE OVER THE EASTERN GULF OF MEXICO AND FLORIDA
CAUSED BY A MID/UPPER-LEVEL TROUGH MOVING THROUGH THE SOUTHEASTERN
UNITED STATES. BEYOND 36-48 HR…THE TROUGH IS FORECAST TO LIFT
OUT…WITH A MID/UPPER-LEVEL RIDGE BUILDING OVER THE EASTERN UNITED
STATES AHEAD OF A SECOND TROUGH OVER THE WESTERN GULF COAST STATES.
THE MODEL GUIDANCE STILL SHOWS CONSIDERABLE SPREAD IN RESPONDING TO
THIS PATTERN. THE NOGAPS CONTINUES TO CALL FOR A NORTH-
NORTHWESTWARD MOTION TOWARD THE FLORIDA PANHANDLE AND INLAND
THEREAFTER. THE UKMET HAS SHIFTED A LITTLE TO THE EAST AND
FORECASTS A NORTHWARD MOTION THROUGH THE FLORIDA PENINSULA…WITH A
SHARP TURN TO THE WEST AFTER 72 HR. THE CANADIAN MODEL HAS A
SIMILAR FORECAST. THE GFS AND ECMWF CALL FOR FAY TO TURN
NORTHEASTWARD INTO THE ATLANTIC…FOLLOWED BY A WESTWARD TURN AND
MOTION BACK INTO NORTHERN FLORIDA AFTER 72 HR. FINALLY…THE GFDL
AND THE HWRF CONTINUE FOR A GENERALLY NORTHWARD MOTION WELL INLAND
OVER THE EASTERN UNITED STATES. GIVEN THE INCREASING SIGNAL FROM
THE GLOBAL MODELS THAT NEW RIDGE TO THE NORTH WILL BLOCK FAY’S
PROGRESS…THE NEW FORECAST TRACK CALLS FOR A SLOWER AND MORE
WESTWARD MOTION AFTER 72 HR. THE EARLIER PART OF THE TRACK…WHICH
CALLS FOR LANDFALL IN SOUTHWESTERN FLORIDA IN ABOUT 18 HR FOLLOWED
BY A TRACK OVER THE FLORIDA PENINSULA…IS SHIFTED A LITTLE TO THE
EAST AND LIES NEAR THE MODEL CONSENSUS.

WHILE FAY REMAINS IN A MODERATE SOUTHWESTERLY VERTICAL SHEAR
ENVIRONMENT AND IS BATTLING DRY AIR ENTRAINMENT…THESE CONDITIONS
ARE NOT SEVERE ENOUGH TO PREVENT STRENGTHENING. THUS…THE
INTENSITY FORECAST CALLS FOR STRENGTHENING UNTIL LANDFALL. WHILE
NOT EXPLICITLY A FORECAST POINT…IT IS LIKELY THAT FAY WILL MAKE
LANDFALL AT OR NEAR HURRICANE STRENGTH. AFTER 24 HR…THE
INTENSITY WILL DEPEND MAINLY ON WHETHER FAY IS OVER LAND…AS THE
UPPER-LEVEL WINDS ARE LIKELY TO BECOME MORE FAVORABLE. THE CURRENT
INTENSITY FORECAST IS BASED ON FAY REMAINING OVER LAND AND THUS
DISSIPATING. IF FAY REGAINS THE ATLANTIC OR THE GULF OF MEXICO
DURING THE FORECAST PERIOD…IT WILL LIKELY REMAIN STRONGER THAN
FORECAST.

IT SHOULD BE NOTED THAT…SIMILAR TO CHARLEY IN 2004…SMALL
DEVIATIONS FROM THE FORECAST TRACK COULD MAKE LARGE DIFFERENCES IN
WHEN AND WHERE THE CENTER OF FAY MAKES LANDFALL ON THE FLORIDA
COAST.

FORECAST POSITIONS AND MAX WINDS

INITIAL 18/2100Z 24.6N 81.9W 50 KT
12HR VT 19/0600Z 25.8N 82.0W 60 KT
24HR VT 19/1800Z 27.4N 81.9W 55 KT…INLAND
36HR VT 20/0600Z 28.8N 81.7W 40 KT…INLAND
48HR VT 20/1800Z 30.0N 81.5W 35 KT…INLAND
72HR VT 21/1800Z 31.0N 81.5W 30 KT…INLAND
96HR VT 22/1800Z 32.0N 82.5W 25 KT…INLAND
120HR VT 23/1800Z 33.0N 84.0W 20 KT…INLAND REMNANT LOW

$$
FORECASTER BEVEN

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