Tropical Storm Bertha in the Gulf
Posted: 01:46 PM 17 July 2026 | 2 Comments | Add Comment | Newest: 11:27 AM 21-Jul EDT
Bertha continues intensifying. A few models are back to suggesting potential for a hurricane near or just south of Louisiana and these runs are now plausible, although still not the official forecast and especially tenuous given the expected increasing shear.
Ciel
10PM CDT 20 July, 2026 Update
Now Tropical Storm Bertha continues to intensify tonight as the center has finally nestled underneath the deepest convection that is firing in the southern half of the circulation. With the center finding ways to stay even a little bit south, this keeps open the window for the cyclone to survive past Louisiana and perhaps go all the way to Texas.
In the meantime, Tropical Storm conditions are now occurring offshore and increasingly likely to occur along portions of the northern Gulf coast. With that, Tropical Storm Warnings are now being issued.
Ciel
12PM EDT 20 July, 2026 Update
Tropical Depression Two: The struggle is real. Northeasterly shear has overtaken dry air as the leading cause of the depression's inability to get named. Models have dramatically peddled back on their bullish outlooks and most now favor a low/mid-range tropical storm tracking into Louisiana or thereabouts, followed by an eventual demise over land.
There is a modest but decreasing chance that the cyclone remains more offshore and can avail itself of the very warm gulf waters, so a stronger system that makes it further west is still a possibility, but no longer the probability. More details on this can be found in the Lounge.
Ciel
11AM EDT 19 July, 2026 Update
Invest 91L has become Tropical Depression Two and NHC Advisories have begun.
Ciel
3:00AM EDT 19 July, 2026 Update

Tonight, Invest 91L now has somewhat of a surface circulation and also pressures at the surface are falling. However, the system lacks sufficient and organized deep convection as it is battling dry air and shear from an upper-level low impinging from the north. Nonetheless, it has more than a few avenues for tropical cyclone genesis to occur over the next 6-72 hours, and is more likely than not to develop. The next name on the list in 2026 is Bertha.
As far as track is concerned, earlier and stronger development could favor continued jogs ~ if not an outright persistent course ~ to the west. This could ultimately put Texas and/or northeastern Mexico on play. A somewhat delayed and/or weaker development would probably tend to favor a track heading as far east as Florida's Big Bend to as far west as the upper Texas gulf coast.
Recon will help and is scheduled to start heading in later today.
Ciel
12:45PM EDT 18 July, 2026 Update
The Area of Interest we have been tracking in the Gulf has been Invest tagged, and is now being monitored as Invest 91L. Recon has been tasked to begin flying in on Sunday. There are some indications that the environment for development may now be going up, perhaps even quite a bit overnight tonight, and so they may encounter a closed surface low when they get in there tomorrow.
Modeling has been a little vague, but with a more coherent system coming together and especially with recon scheduled to go in, should start being more reliable soon. Interests all along and in the Gulf may want to follow along with us on this one. Lots more modeling data, analysis and speculation can be found in the Lounge.
-Ciel
Original Update
We are now closely monitoring two systems that while still officially listed as having "slight" chances for development, are already producing heavy weather.
The first, and closest to home, is an area of closed low pressure aloft that is building down towards the surface, not yet Invest-tagged,
but we already have a Forecast Lounge up on this one:

Eastern Gulf Low Forecast Lounge (INVEST 91L)
The second is a stout tropical wave now located south of the Cabo Verde Islands in the far eastern Atlantic, but encountering cooler waters and stable air.

Tropical Storm Bertha Event Related Links
Tropical Tidbits Page on system
Flhurricane Satellite Floater Animation of Bertha
GOES Floater
Tomer Berg Info page for Bertha
CyclonicWx Page for Bertha
Clark Evans Track Model Plot of Bertha
(Animated!) Model Plots in Google Earth - In Google Maps
Clark Evans Intensity Model Plot of Bertha (Animated!)
Clark Evans Track Plot of Bertha
Clark Evans Top 10 Analog Storms for Bertha
http://www.ral.ucar.edu/guidance/realtime/current/ More model runs on from RAL/Jonathan Vigh's page
NRL Info on Bertha -- RAMMB Info
COD Atlantic Satellite View
See the forecast lounge for more speculation on this system.
Satellite Image Offshore as of 6/29/2026:
Arthur's main impact was extreme amounts of rainfall in Louisiana, Mississippi, and Alabama, and a few other places. Near and inland along the Mississippi Gulf coast in particular, the rainfall amounts were something not seen in many many years in that area, causing all sorts of freshwater flooding.
We'll be watching the tropics into July.
Tropical Storm Arthur
Posted: 10:54 AM 17 June 2026 | 4 Comments | Add Comment | Newest: 04:44 PM 17-Jun EDT
The Tropical Storm Warning has been extended along the upper Texas coastline.
Tropical Storm Arthur Special Advisory Number 6
NWS National Hurricane Center Miami FL AL012026
1130 AM CDT Wed Jun 17 2026
...TROPICAL STORM WARNING EXTENDED SOUTHWARD...
...LIFE-THREATENING FLOODING EXPECTED ACROSS PORTIONS OF THE
SOUTHEASTERN UNITED STATES...
SUMMARY OF 1130 AM CDT...1630 UTC...INFORMATION
-----------------------------------------------
LOCATION...28.8N 95.5W
ABOUT 60 MI...100 KM ENE OF PORT OCONNOR TEXAS
ABOUT 165 MI...265 KM WSW OF LAKE CHARLES LOUISIANA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...NE OR 45 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
The Tropical Storm Warning has been extended southward to Sargent,
Texas.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Sargent, Texas to Morgan City, Louisiana
10AM CDT 17 June, 2026 Update
Recon has confirmed that ONE has become our first Tropical Storm of the year and NHC Advisories are being initiated on Arthur.
Model deep-dives and more in the Arthur Forecast Lounge
Tropical Storm Arthur Event Related Links
Tropical Tidbits Page on system
Flhurricane Satellite Floater Animation of 1
GOES Floater
Tomer Berg Info page for 1
CyclonicWx Page for 1
Clark Evans Track Model Plot of 1
(Animated!) Model Plots in Google Earth - In Google Maps
Clark Evans Intensity Model Plot of 1 (Animated!)
Clark Evans Top 10 Analog Storms for 1
http://www.ral.ucar.edu/guidance/realtime/current/ More model runs on from RAL/Jonathan Vigh's page
NRL Info on 1 -- RAMMB Info
COD Atlantic Satellite View
Texas Gulf Coast Links [http://moe.met.fsu.edu/~mnissenbaum/radar.html Mark Nissenbaum's radar page}
Texas Composite Radar Loop (Latest Static) East to West:
Houston/Galveston, TX Radar Radar Loop (Latest Static)
Corpus Christi, TX Radar Radar Loop (Latest Static)
Brownsville, TX Radar Radar Loop (Latest Static)
Gulf of Mexico Satellite Imagery
Area Forecast Discussions: Houston/Galveston, TX - Corpus Christi, TX - Browsnville/South Padre Island, TX
Potential Tropical Cyclone One Issued Near Texas Gulf Coast
Posted: 10:50 AM 10 June 2026 | 2 Comments | Add Comment | Newest: 11:51 AM 15-Jun EDT
PTC ONE is producing sustained winds into tropical storm force based on buoy, ship and oil rig reports. Recon is now flying in. The cyclone at this time resembles a sheared tropical storm and it would not be surprising if we have Arthur at 10AM.
Ciel
4:00AM CDT 17June, 2026 Update
PTC ONE is a highly-sheared cyclone this morning, and too void of convection near and over the center for it to be classified as a Tropical Cyclone. However, with PTC ONE, as has been mentioned here, there and everywhere, the classification isn't what matters, but rather the impacts.
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KEY MESSAGES:
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1. Potentially life-threatening flash flooding and urban flooding are likely through Thursday across southern Louisiana, southern Mississippi, southern Alabama, southwestern Georgia and the Florida Panhandle, with possible flooding near the Upper Texas coast. Ongoing heavy rainfall could prolong the flood threat into the weekend.
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2. Tropical-storm-force winds are expected along the Louisiana coast today from Sabine Pass to Morgan City where a Tropical Storm Warning is in effect.
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3. Minor to moderate coastal flooding is expected along portions of the Upper Texas and Louisiana coastlines today.
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FORECAST POSITIONS AND MAX WINDS
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INIT 17/0900Z 28.0N 96.7W 25 KT 30 MPH...POTENTIAL TROP CYCLONE
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12H 17/1800Z 29.1N 95.2W 35 KT 40 MPH...TROPICAL STORM
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24H 18/0600Z 31.1N 92.8W 25 KT 30 MPH...POST-TROP/REMNT LOW
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36H 18/1800Z...DISSIPATED
Ciel
4:00PM CDT 16 June, 2026 Update
PTC ONE is already on the cusp of being classifiable as a Tropical Depression and may go straight to being a named Tropical Storm within minutes or hours after moving offshore. A Tropical Storm Warning is now up for the coast of Louisiana from Sabine Pass to Morgan City. There are a few models that increasingly suggest likely-Arthur may have a chance to strengthen a little more than forecast, so mariners and those along the coast may want to take note. Additionally, interactions with strong jet dynamics and a very large area of "brown ocean" (very saturated land and a humid atmosphere) could keep likely-Arthur going - perhaps even intensifying - over land. This is a very dangerous storm.
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NWS National Hurricane Center Miami FL AL012026 400 PM CDT Tue Jun 16 2026 ...DANGEROUS FLASH FLOODING CONTINUES OVER PORTIONS OF TEXAS AND LOUISIANA FROM POTENTIAL TROPICAL CYCLONE ONE.... ...TROPICAL STORM WARNING ISSUED FOR PORTIONS OF THE LOUISIANA COAST.. SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ----------------------------------------------LOCATION...27.3N 97.6W ABOUT 35 MI...60 KM SSW OF CORPUS CHRISTI TEXAS ABOUT 330 MI...530 KM SW OF LAKE CHARLES LOUISIANA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H[ PRESENT MOVEMENT...NE OR 45 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY:A Tropical Storm Warning is issued for the coast of Louisiana from Sabine Pass to Morgan City. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for...* Sabine Pass to Morgan Cit A Tropical Storm Watch is in effect for... * Sargent to Sabine Pass
Ciel
9:30AM CDT 16 June, 2026 Update
NHC will initiate advisories on Potential Tropical Cyclone One (formerly AL90) located over southern Texas, at 1000 AM CDT (1500 UTC).
8:00AM CDT 16 June, 2026 Update
Invest 90L is over land and still has a 60% chance to develop. The energy is stretched out along the front, but the best track position has it located there northwest of Brownsville near Encino, TX. This area has a chance to develop once it reaches the water, but anything that does (if it does) is likely to be short lived. The impact remains heavy, flooding rainfall.

1:40PM CDT 15 June, 2026 Update
The Area of Interest has just been Invest-tagged, 90L. Specialized model runs will begin shortly and recon is being tentatively scheduled.

Ciel
1:00PM CDT 15 June, 2026 Update
Chances for development of this system are up to 50%, and Tropical Storm Watches and Warnings could be issued as early as tomorrow for portions of the NW Gulf.
12:00PM CDT 15 June, 2026 Update
Widespread flash flooding, some of it catastrophic, continues. WPC has greatly expanded the MODERATE RISK outline

4:45PM CDT 14 June, 2026 Update

The risk of Flash Flooding across the south is going way up in response to the abundant influx of deep, tropical moisture courtesy of the area of low pressure we have been tracking and which is now inland over northeastern Mexico feeding into and interacting with an approaching wind shift front that is forecast to pull up mostly stationary for several days. Ground will likely become saturated if it isn't already across portions of south Texas, southeast Texas and Louisiana, and a multi-day, life-threatening flood event may be setting up.
Ciel
10:00AM CDT 13 June, 2026 Update

Above: This morning's visible image of the Gulf Low overlaid with GFS-analyzed 10-meter winds cr. TC-ATLAS
The Low in the western Gulf continues to gradually become better organized and is now likely centered just east of Tampico, MX, heading generally NW to NNW. Fluctuations in its path are likely over the next 3-7 days, but it is mostly modeled to head inland and then either track just inland from the coast of Texas, bumping into an approaching front, or reemerge off the coast roughly east of Brownsville, TX early next week.
The greatest risk with the area of low pressure in the western Gulf is going to be from the potential for several days of tropical rainfall and flooding, regardless of whether or not it becomes a Tropical Depression. The same will be true should it become a Tropical Depression, but never get a name. This is a system that is cranking up loads and loads of moisture into eastern Mexico, Texas and Louisiana, is likely to get stuck underneath a stalling front, and then get wrung out over the course of 3-7 days over many of the same areas. Flooding is always a serious risk with 'weak' systems that slow down or stall, but unfortunately, all-too-often these systems do not get the attention they deserve because they lack a name or title.
-Ciel
7:45AM CDT 12 June, 2026 Update
An area of low pressure has indeed formed in the Bay of Campeche. This is a very favorable region for Tropical Cyclogenesis and despite less-than-ideal conditions for development, development is possible and in fact the odds appear to be going up. An Invest tag is likely coming, specialized model runs would be added, and perhaps recon will also be tasked, depending.
-Ciel
Original Update
The 8am update for the tropical weather outlook now has the first area of interest for the 2026 Atlantic Hurricane season. This area would be the remnants of Cristina in the East Pacific after it crosses Guatemala and Mexico, which has a lot of high mountains. It's overall unlikely to develop, but worth watching in those areas and later on in the Gulf side of Mexico, and rainfall could reach its way into Texas after this. It'll be monitored for mid to late next week, but at this time development chances appear to be very low.


The remnants of east pacific Cristina with some tropical storm warnings up along Guatemala and El Salvador now:

Forecast Lounge discussion for this system in https://flhurricane.com/cyclone/showflat...gonew=1#UNREAD
Potential Tropical Cyclone One Event Related Links
Tropical Tidbits Page on system
Flhurricane Satellite Floater Animation of 1
GOES Floater
Tomer Berg Info page for 1
CyclonicWx Page for 1
Clark Evans Track Model Plot of 1
(Animated!) Model Plots in Google Earth - In Google Maps
Clark Evans Intensity Model Plot of 1 (Animated!)
Clark Evans Top 10 Analog Storms for 1
http://www.ral.ucar.edu/guidance/realtime/current/ More model runs on from RAL/Jonathan Vigh's page
NRL Info on 1 -- RAMMB Info
COD Atlantic Satellite View
Texas Gulf Coast Links [http://moe.met.fsu.edu/~mnissenbaum/radar.html Mark Nissenbaum's radar page}
Texas Composite Radar Loop (Latest Static) East to West:
Houston/Galveston, TX Radar Radar Loop (Latest Static)
Corpus Christi, TX Radar Radar Loop (Latest Static)
Brownsville, TX Radar Radar Loop (Latest Static)
Gulf of Mexico Satellite Imagery
Area Forecast Discussions: Houston/Galveston, TX - Corpus Christi, TX - Browsnville/South Padre Island, TX

