Alert archive / Texas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 95, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 27, 2020, 6:51 PM CDT for 4 counties in Texas. It was in force for 39 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 27, 2020, 6:51 PM CDT (23:51 UTC)
- Expired
- May 27, 2020, 7:30 PM CDT
- In force
- 39 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Brazos County, TX, Grimes County, TX, Montgomery County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 142 km from the middle of the area, began a volume at 23:53 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 |
|---|---|---|---|
| May 27, 1:24 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.9 hours before the alert went out and 258 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
- 827 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1257 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 27, 4:44 PM CDT, 2 hours 7 minutes earlier.
Area forecast discussion, May 27, 4:44 PM CDT, 2 hours 7 minutes before
Area Forecast Discussion National Weather Service Houston/Galveston TX 444 PM CDT Wed May 27 2020 .DISCUSSION... A cluster of strong to severe thunderstorms have move across the northern counties and are now making their way across the central regions of the CWA. Some of these storms produced winds of around 45 MPH with gusts up to around 60 MPH. Pea to golf ball size hail (up to 1.75 inches) has been reported along with frequent to intense lightning. For the rest of today, strong to severe thunderstorms with the potential to produce damaging winds, hail, heavy to torrential rainfall, and frequent to intense lightning are expected to continue to develop. The Severe Thunderstorm Watch will continue in effect through 9 PM CDT tonight. Showers and thunderstorms will gradually decrease overnight into early Thursday morning. Another round of showers and thunderstorms expected Thursday throughout the day. Hazards with these storms will be damaging winds and hail, although not as intense/widespread as todays activity. SPC Day 2 Outlook continues the Marginal Risk for Severe Thunderstorms across all of SE Texas. Activity will dissipate Thursday night. Dry weather pattern and a warming trend expected Friday into the upcoming week. 24 && .MARINE... Showers and thunderstorms expected to move across the local waters late afternoon and evening today, some with the potential to become strong to severe. A Severe Thunderstorm Watch remains in effect for the nearshore waters through 9 PM CDT today. Light and variable winds with periods of showers and thunderstorms expected through Friday. A frontal boundary will move through the area early Friday ushering in light to moderate offshore winds. Easterly winds expected this weekend into early next week. Onshore flow returns midweek. 24 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 64 84 67 87 65 / 80 40 10 0 0 Houston (IAH) 70 88 69 89 70 / 60 50 10 10 0 Galveston (GLS) 76 83 75 85 76 / 30 40 20 10 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && Discussion/Aviation/Marine...24
In the hours before
Special weather statement, May 27, 6:09 PM CDT, 42 minutes before
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</html>Local storm report, May 27, 6:25 PM CDT, 26 minutes before
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</html>Local storm report, May 27, 6:38 PM CDT, 13 minutes before
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</html>Local storm report, May 27, 6:41 PM CDT, 10 minutes before
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</html>Local storm report, May 27, 6:43 PM CDT, 8 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:12 PM CDT | Special Weather Statement | HGX | Chambers | 48 min |
| May 26, 7:17 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 43 min |
| May 26, 7:24 PM CDT | Areal Flood Advisory | HGX | Chambers, Liberty | 66 min |
| May 26, 8:23 PM CDT | Special Weather Statement | HGX | Chambers | 52 min |
| May 26, 9:25 PM CDT | Special Weather Statement | HGX | Chambers | 50 min |
| May 26, 9:30 PM CDT | Areal Flood Advisory | HGX | Chambers | 2 hr |
| May 26, 10:21 PM CDT | Special Marine Warning | HGX | 54 min | |
| May 27, 1:45 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 60 min |
| May 27, 2:42 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Grimes, Washington | 48 min |
| May 27, 3:08 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Brazos, Grimes, Harris, Montgomery, Waller and 1 more | 52 min |
| May 27, 3:21 PM CDT | Tornado Warning | HGX | Grimes, Harris, Montgomery, Waller, Washington | 24 min |
| May 27, 3:52 PM CDT | Special Weather Statement | HGX | Liberty | 38 min |
| May 27, 3:54 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Fort Bend, Harris, Montgomery, Waller | 36 min |
| May 27, 4:06 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 24 min |
| May 27, 4:28 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Brazoria, Chambers, Fort Bend, Galveston, Harris and 4 more | 62 min |
| May 27, 4:29 PM CDT | Special Marine Warning | HGX | 61 min | |
| May 27, 4:45 PM CDT | Areal Flood Advisory | HGX | Brazoria, Fort Bend, Harris | 2 hr |
| May 27, 4:50 PM CDT | Tornado Warning | HGX | Chambers, Galveston, Harris | 13 min |
| May 27, 5:06 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty | 54 min |
| May 27, 5:14 PM CDT | Special Marine Warning | HGX | 31 min | |
| May 27, 5:28 PM CDT | Areal Flood Advisory | HGX | Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty | 115 min |
| May 27, 5:34 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Wharton | 26 min |
| May 27, 5:43 PM CDT | Special Marine Warning | HGX | 62 min | |
| May 27, 6:09 PM CDT | Special Weather Statement | HGX | Burleson | 51 min |
| May 27, 6:55 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Washington | 20 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020
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.