Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 30, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 3, 2018, 7:11 PM CDT for 5 counties in Texas. It was in force for 34 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
- Apr 3, 2018, 7:11 PM CDT (00:11 UTC)
- Expired
- Apr 3, 2018, 7:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Grimes County, TX, Houston County, TX, Madison County, TX, Trinity County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 170 km from the middle of the area, began a volume at 00:11 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 3, 5:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.2 hours before the alert went out and 248 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
- 1661 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.0
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 Apr 3, 6:18 PM CDT, 53 minutes earlier.
Area forecast discussion, Apr 3, 6:18 PM CDT, 53 minutes before
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</html>Hazardous weather outlook, Apr 3, 6:11 AM CDT, 13 hours before
Hazardous Weather Outlook National Weather Service Houston/Galveston TX 611 AM CDT Tue Apr 3 2018 TXZ163-164-176>179-195>200-210>214-226-227-235>238-041115- Austin-Brazoria-Brazos-Burleson-Chambers-Colorado-Fort Bend- Galveston-Grimes-Harris-Houston-Jackson-Liberty-Madison-Matagorda- Montgomery-Polk-San Jacinto-Trinity-Walker-Waller-Washington- Wharton- 611 AM CDT Tue Apr 3 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight A cold front will cross the region from north to south this afternoon and evening, bringing with it a risk of a few strong to severe thunderstorms. The primary hazard with these storms will be damaging winds. Large hail and an isolated tornado will also be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required this afternoon and tonight. GMZ330-335-350-355-370-375-041115- Coastal waters from Freeport to the Matagorda Ship Channel out 20 NM-Coastal waters from High Island to Freeport out 20 NM- Galveston Bay-Matagorda Bay- Waters from Freeport to the Matagorda Ship Channel from 20 to 60 NM-Waters from High Island to Freeport from 20 to 60 NM- 611 AM CDT Tue Apr 3 2018 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Strong rip currents and elevated tides are expected today. Tide levels may cause some localized minor coastal flooding issues at high tide on Tuesday morning...mainly around SH 87 and 124 on Bolivar Peninsula. Strong to severe thunderstorms may accompany this front tonight and early Wednesday morning with the main hazards to mariners consisting of locally enhanced winds and waves, hail, and heavy rain resulting in visibilities below 1 nautical mile at times. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Small craft advisories are possible in the wake of a cold front early Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight and early Wednesday.
In the hours before
Special weather statement, Apr 3, 4:58 PM CDT, 2 hours 13 minutes before
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</html>Special weather statement, Apr 3, 6:05 PM CDT, 1 hour 6 minutes before
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</html>Special weather statement, Apr 3, 6:32 PM CDT, 39 minutes before
Special Weather Statement
National Weather Service Houston/Galveston TX
632 PM CDT TUE APR 3 2018
TXZ163-176-177-196-198-040000-
Walker TX-Madison TX-Brazos TX-Grimes TX-Houston TX-
632 PM CDT TUE APR 3 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GRIMES...
NORTHEASTERN BRAZOS...SOUTHWESTERN HOUSTON...MADISON AND WEST CENTRAL
WALKER COUNTIES UNTIL 700 PM CDT...
At 631 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Kurten, or 15 miles southwest of Madisonville, moving
east at 45 mph.
Nickel size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Madisonville, Iola and North Zulch.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
A Severe Thunderstorm Watch remains in effect until midnight CDT for
southeastern Texas.
LAT...LON 3083 9558 3076 9618 3085 9623 3109 9581
3109 9577 3111 9577 3115 9571
TIME...MOT...LOC 2331Z 248DEG 41KT 3083 9612Special weather statement, Apr 3, 6:58 PM CDT, 13 minutes before
Special Weather Statement National Weather Service Houston/Galveston TX 658 PM CDT TUE APR 3 2018 TXZ163-164-176-177-198-040030- Walker TX-Madison TX-Grimes TX-Houston TX-Trinity TX- 658 PM CDT TUE APR 3 2018 ...SPECIAL WEATHER STATEMENT... At 658 PM CDT, Doppler radar was tracking a strong thunderstorm near Madisonville, moving east at 40 mph. Half inch hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Northwestern Huntsville, Madisonville, Riverside, Bedias, Iola and Crabbs Prairie. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && A Severe Thunderstorm Watch remains in effect until midnight CDT for southeastern Texas. LAT...LON 3074 9607 3089 9612 3111 9546 3076 9539 TIME...MOT...LOC 2358Z 248DEG 49KT 3088 9585
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:31 PM CDT | Special Weather Statement | HGX | Walker | 29 min |
| Apr 3, 7:55 PM CDT | Special Weather Statement | HGX | Walker | 35 min |
| Apr 3, 9:36 PM CDT | Special Weather Statement | HGX | Austin, Colorado | 39 min |
| Apr 3, 10:01 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Fort Bend, Harris, Waller, Wharton | 29 min |
| Apr 3, 10:29 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Fort Bend, Harris, Waller, Wharton | 24 min |
| Apr 3, 11:34 PM CDT | Special Weather Statement | HGX | Harris | 41 min |
| Apr 3, 11:53 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Chambers, Galveston, Harris | 37 min |
| Apr 3, 11:57 PM CDT | Special Marine Warning | HGX | 63 min | |
| Apr 4, 12:29 AM CDT | Special Weather Statement | HGX | Chambers | 46 min |
| Apr 4, 12:42 AM CDT | Special Marine Warning | HGX | 63 min | |
| Apr 4, 1:09 AM CDT | Special Marine Warning | HGX | 66 min | |
| Apr 4, 2:09 AM CDT | Special Marine Warning | HGX | 36 min | |
| Apr 4, 2:39 AM CDT | Special Marine Warning | HGX | 96 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018
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.