Alert archive / Texas / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 85, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 9, 2019, 6:24 PM CDT for 4 counties in Texas. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 9, 2019, 6:24 PM CDT (23:24 UTC)
- Expired
- May 9, 2019, 7:15 PM CDT
- In force
- 51 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Austin County, TX, Colorado County, TX, Fort Bend County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 109 km from the middle of the area, began a volume at 23:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 11.4 hours before the alert went out and 234 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3818 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- -40 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 9, 2:48 PM CDT, 3 hours 36 minutes earlier.
Area forecast discussion, May 9, 2:48 PM CDT, 3 hours 36 minutes before
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</html>Hazardous weather outlook, May 9, 7:30 AM CDT, 10 hours 54 minutes before
Hazardous Weather Outlook National Weather Service Houston/Galveston TX 730 AM CDT Thu May 9 2019 TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313- 335>338-101230- Austin-Brazos-Burleson-Chambers-Coastal Brazoria- Coastal Galveston-Coastal Harris-Coastal Jackson- Coastal Matagorda-Colorado-Fort Bend-Grimes-Houston- Inland Brazoria-Inland Galveston-Inland Harris-Inland Jackson- Inland Matagorda-Madison-Montgomery-Northern Liberty-Polk- San Jacinto-Southern Liberty-Trinity-Walker-Waller-Washington- Wharton- 730 AM CDT Thu May 9 2019 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight A Flash Flood Watch is in effect from 1 PM today through 7 PM Saturday. Showers and thunderstorms should develop today along a stalled frontal boundary by this afternoon. Heavy rainfall will be possible and could result in flash flooding and additional rises on rivers and bayous. Damaging winds, hail, and isolated tornadoes will also be possible. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A Flash Flood Watch is in effect through 7 PM Saturday. Strong storms are possible through the weekend. A series of upper level disturbances coupled with a stalled front and abundant moisture will create a favorable environment for heavy rain. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed today. Emergency managers should also prepare for activation at various times through the remainder of the week. TXZ436>438-101230- Brazoria Islands-Galveston Island and Bolivar Peninsula- Matagorda Islands- 730 AM CDT Thu May 9 2019 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight A Flash Flood Watch is in effect from 1 PM today through 7 PM Saturday. Showers and thunderstorms should develop today along a stalled frontal boundary by this afternoon. Heavy rainfall will be possible and could result in flash flooding and additional rises on rivers and bayous. Damaging winds, hail, and isolated tornadoes will also be possible. Elevated tide levels will approach 3.5 feet this morning. Minor coastal flooding will be possible, potentially impacting vulnerable locations such as Highway 87 and 124. A coastal flood advisory may be needed. Strong rip currents will also be possible along Gulf facing beaches. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Elevated tide levels near 3.5 feet will continue through the end of the week. Minor coastal flooding will be possible, potentially impacting vulnerable locations such as Highway 87 and 124. Strong rip currents will also be possible along Gulf facing beaches. A Flash Flood Watch is in effect through 7 PM Saturday. Strong storms are possible through the weekend. A series of upper level disturbances coupled with a stalled front and abundant moisture will create a favorable environment for heavy rain. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed today. Emergency managers should also prepare for activation at various times through the remainder of the week. GMZ330-335-350-355-370-375-101230- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- Galveston Bay-Matagorda Bay- Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM-Waters from High Island to Freeport TX from 20 to 60 NM- 730 AM CDT Thu May 9 2019 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Some showers and thunderstorms will be possible today, and could produce heavy rainfall, gusty winds, and hail. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A series of upper level disturbances will bring periods of showers and thunderstorms through the remainder of the week. Some storms could be strong with gusty winds, hail and periods of heavy rain. .SPOTTER INFORMATION STATEMENT... Spotter activation will be needed.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 12:30 AM CDT | Special Weather Statement | HGX | Houston | 45 min |
| May 9, 4:34 AM CDT | Flash Flood Watch | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 59 hr |
| May 9, 4:25 PM CDT | River Flood Warning | HGX | Houston, Madison, Trinity, Walker | 16 days |
| May 9, 6:27 PM CDT | Special Weather Statement | HGX | Harris | 48 min |
| May 9, 6:50 PM CDT | Special Weather Statement | HGX | San Jacinto | 40 min |
| May 9, 6:54 PM CDT | Areal Flood Advisory | HGX | Fort Bend, Harris, Waller | 2 hr |
| May 9, 6:57 PM CDT | Special Weather Statement | HGX | Austin | 48 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2019Every severe thunderstorm warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.