Tropical Storm Don close to landfall; 91L tracks west
Tropical Storm Don continues to make its way west-northwest toward the Texas coast this evening. Don has increased steadily in pressure over the past 18 to 24 hours. Wind speed remained 45 knots in the 5pm EDT advisory. The strongest thunderstorm activity continues to be south of the center, southeast of Brownsville, Texas, but the strongest winds are to the north according to Hurricane Hunter data. A mesoscale vortex developed on the southern end this afternoon with high radar reflectivity. Radar estimated rainfall rates are as much as 5 inches per hour to the south, and around 2 inches on the north side of the storm, but these are likely an overestimate, although rainfall rate is definitely higher on the southern end of this storm. It began raining in Brownsville, Texas in the 2pm CDT hour, and so far the airport has received 0.3 inches of rain. The heaviest thunderstorms still look to be to Brownsville's southeast.
Figure 1. Radar reflectivity from Brownsville, Texas at 5pm CDT.
Forecast for Tropical Storm Don
A Hurricane Hunter is currently in the storm, and center fixes suggest Don will make landfall south of Baffin Bay, Texas, in the next couple of hours. Tropical storm-force winds, should there be any, will most likely be seen in a swath from Baffin Bay to Corpus Christi. Once Don moves inland it is expected to dissipate quickly, and without having produced enough meaningful rainfall to impact any drought conditions. The Hydrometeorological Prediction Center isn't predicting any rainfall that would exceed flash flood guidance, and no flood watches or warnings are in effect.
NHC Invest 91L
Moderate thunderstorm activity continues in Invest 91L this afternoon, and the Hurricane Center estimates that the axis of the wave is located near 42W. Estimates from satellites show that 91L has a moderate circulation at all levels, and the Advanced Scatterometer resolved a surface circulation early this morning.
Figure 2. Advanced Scatterometer pass over 91L at 7am EDT this morning. The wind barbs show a low-level circulation had formed near the most intense thunderstorms—a good sign of potential development.
Some of the reliable models—GFS, UKMET, and CMC—are developing 91L into at least a weak tropical cyclone. The ECMWF continues to show no development, but a more interesting solution, one that takes the wave on a southerly track. The GFDL does not develop Invest 91L, but the HWRF forecasts category 1 hurricane strength by August 1st. The track for 91L is likely a turn to the northwest when it reaches the Caribbean and a curve to the northeast around the Bahamas. The models that are developing the system do not suggest this is a U.S. landfall threat, although it's pretty early in the game to predict that, and I imagine the track will fluctuate over the next few days. Today the Hurricane Center gives the wave a 30% chance of development (now 50% in the 8pm EDT outlook) over the next 48 hours, and I'm around 40-50% over its lifetime.
I'll have a post tomorrow afternoon on the aftermath of Don as well as NHC Invest 91L.
Angela
Reader Comments
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The locals don't build close to the water. They save that for the Americans....lol
They will have excitement, fun, and adventure. They will have beautiful skies, and delicious food. They will laugh and hold hands. And best of all, they will enjoy your worry, as they have worried over you these years.
Think it will be declared tomorrow?
just a question as it appears right now there will be
northerly component what would be the chances of a/b
building back and causing track like dora 1964 ??
yes i live in florida
Based on how it looks right now, no. We'll see what it looks like in the morning.
I think there is a good chance it is named on Sunday, especially with recon going out in the system. I agree, we'll see how it looks in the AM.
I'm leaning more on a Sunday renumber.
I believe tomorrow will be the day for 91L to pull itself together.
Don's center was hard to distinguish as it neared landfall. The area down by brownsville was likely in the mid levels. The surface circulation was farther up the coast. I'm guessing the NE shear caused the mid and low level centers to become decoupled and that's what we saw on radar. Not sure why the convection collapsed so quickly like that. Maybe unfavorable conditions overland for thunderstorms to be sustained.
Invest91 Statistical/Simple Models (CLIPER,BAMs,LBAR,other Statistical Models)
Dynamic Models (More sophisticated models)
OMG...IKE...finally a voice of reason that I understand...btw...how the heck are ya?
XXL/INV91/XX
MARK
10.55N/44.15W
You mean southward? Models have definitely shifted southward.
Doing fine. Eating a KFC dinner. How r u?
What a shame for the folks in TX who need the rain so bad
Watching Kabuki theater on C-Span.
..and Don Tejas' death Spiral as well.
RAPID DISAPATION FLAG ON
I create it with a BASH script. It isn't found on the web - only the frames for it.
exhausted lol...worked a 12 today...yesterday my sitter had emerg surg so i had mine plus her 3, today during my 12 Mom in law went to ER...lets just say...the last 28 hours have laid me out...
We can't even get tropical storm with rain bands producing 5-10 inches earlier this afternoon to 'spread the love' once it lands!
My state is cursed.
I see that.
Jeez...hope it gets better.
This is even more pathetic than Bonnie!
Arlene was first landfall this year.
Well, the one Keeper posts also shows a southward shift. I don't think the site where you got that image is reliable in this case.
what do you think the probability is that the rain was there but due to the extreme dryness it evaporated before it could reach the ground?
PeeWee has Dual Survivor on in the background...lol... almost like Kabuki theatre...snicker snicker
Could you explain the difference between the two?
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