Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 69, NWS Houston/Galveston, TX

June 15, 2021Brazos County, Grimes County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 15, 2021, 7:33 PM CDT for Brazos County, Grimes County, Texas. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 15, 2021, 7:33 PM CDT (00:33 UTC)
Expired
Jun 15, 2021, 8:15 PM CDT
In force
42 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brazos County, TX, Grimes County, TX

What was reported inside it

TimeReportWhereRemark
Jun 15, 7:50 PM CDTHAIL 0.251.5 S Iola, TXPEA SIZE HAIL AND WINDS OF 45 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.6 hours before the alert went out and 263 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.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2021-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 993 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2021-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
993 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
2132 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

336 
WUUS54 KHGX 160033
SVRHGX
TXC041-185-160115-
/O.NEW.KHGX.SV.W.0069.210616T0033Z-210616T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
733 PM CDT Tue Jun 15 2021

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
  Northern Grimes County in southeastern Texas...
  East central Brazos County in southeastern Texas...

* Until 815 PM CDT.

* At 733 PM CDT, a severe thunderstorm was located near Bedias, or 16
  miles south of Madisonville, moving west at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Trained weather spotters.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Eastern College Station, eastern Bryan, Bedias, Wixon Valley, Iola
  and Carlos.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3082 9594 3065 9587 3049 9622 3075 9633
TIME...MOT...LOC 0033Z 069DEG 14KT 3072 9599 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
054 
WWUS54 KHGX 160106
SVSHGX

Severe Weather Statement
National Weather Service Houston/Galveston TX
806 PM CDT Tue Jun 15 2021

TXC041-185-160115-
/O.EXP.KHGX.SV.W.0069.000000T0000Z-210616T0115Z/
Grimes TX-Brazos TX-
806 PM CDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN GRIMES AND EAST
CENTRAL BRAZOS COUNTIES WILL EXPIRE AT 815 PM CDT...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire.  However gusty 
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3082 9594 3065 9587 3049 9622 3075 9633
TIME...MOT...LOC 0105Z 069DEG 14KT 3069 9608 

$$

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 7:02 PM CDTSevere Thunderstorm WarningHGXBrazoria, Chambers, Galveston43 min
Jun 15, 7:08 PM CDTSpecial Weather StatementHGXLiberty52 min
Jun 15, 7:14 PM CDTSevere Thunderstorm WarningHGXChambers, Galveston, Harris31 min
Jun 15, 7:21 PM CDTSpecial Weather StatementHGXMontgomery39 min
Jun 15, 7:26 PM CDTSpecial Marine WarningHGX94 min
Jun 15, 7:31 PM CDTSpecial Weather StatementHGXBrazoria, Fort Bend59 min
Jun 15, 8:04 PM CDTSpecial Weather StatementHGXMontgomery41 min
Jun 15, 8:24 PM CDTSpecial Weather StatementHGXBrazos, Burleson51 min
Jun 15, 8:30 PM CDTSpecial Marine WarningHGX30 min
Jun 15, 8:47 PM CDTSpecial Weather StatementHGXWaller28 min
Jun 15, 9:02 PM CDTSpecial Weather StatementHGXWashington43 min
Jun 15, 9:12 PM CDTSpecial Weather StatementHGXFort Bend48 min
Jun 15, 9:20 PM CDTSpecial Marine WarningHGX115 min
Jun 15, 9:23 PM CDTSmall Craft AdvisoryHGX2 hr
Jun 16, 4:16 PM CDTSpecial Weather StatementHGXJackson44 min
Jun 16, 4:17 PM CDTSpecial Marine WarningHGX58 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.