Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 73, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jul 13, 2021, 3:18 PM CDT for Harris County, Texas. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2021, 3:18 PM CDT (20:18 UTC)
- Expired
- Jul 13, 2021, 3:45 PM CDT
- In force
- 27 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Harris County, TX
The radar
The Houston radar (KHGX), 66 km from the middle of the area, began a volume at 20:17 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.3 hours before the alert went out and 225 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
- 2962 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 625 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
020 WUUS54 KHGX 132018 SVRHGX TXC201-132045- /O.NEW.KHGX.SV.W.0073.210713T2018Z-210713T2045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Houston/Galveston TX 318 PM CDT Tue Jul 13 2021 The National Weather Service in League City has issued a * Severe Thunderstorm Warning for... Northwestern Harris County in southeastern Texas... * Until 345 PM CDT. * At 318 PM CDT, a severe thunderstorm was located over Willowbrook, or near Jersey Village, moving northwest at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Jersey Village, Spring Branch North, Spring Branch West, northeastern Addicks Park Ten, Fairbanks / Northwest Crossing, Willowbrook, Greater Inwood, Westbranch, Carverdale, Spring Branch Central and northwestern Acres Home. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Wind damage with this storm may occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. && LAT...LON 2988 9544 2981 9554 2992 9573 3010 9547 TIME...MOT...LOC 2018Z 144DEG 14KT 2994 9552 HAIL...<.75IN WIND...60MPH $$
1 follow-up statement
379
WWUS54 KHGX 132041
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
341 PM CDT Tue Jul 13 2021
TXC201-132051-
/O.EXP.KHGX.SV.W.0073.000000T0000Z-210713T2045Z/
Harris TX-
341 PM CDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HARRIS COUNTY
WILL EXPIRE AT 345 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 2988 9544 2981 9554 2992 9573 3010 9547
TIME...MOT...LOC 2041Z 144DEG 14KT 3000 9557
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 12:56 PM CDT | River Flood Warning | HGX | Madison, Walker | 25 hr |
| Jul 13, 3:18 PM CDT | Special Weather Statement | HGX | Waller | 42 min |
| Jul 13, 3:41 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 34 min |
| Jul 13, 3:57 PM CDT | Special Weather Statement | HGX | Waller | 63 min |
| Jul 13, 4:48 PM CDT | Special Weather Statement | HGX | Washington | 57 min |
| Jul 13, 5:11 PM CDT | Special Weather Statement | HGX | Brazos, Burleson | 64 min |
| Jul 13, 5:39 PM CDT | Special Weather Statement | HGX | Harris | 66 min |
| Jul 13, 6:04 PM CDT | Special Weather Statement | HGX | Houston, Madison, Trinity | 71 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning in 2021
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.