Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 67, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 15, 2021, 7:02 PM CDT for Brazoria County, Chambers County, Galveston County, Texas. It was in force for 43 min. 5 reports 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, 7:02 PM CDT (00:02 UTC)
- Expired
- Jun 15, 2021, 7:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brazoria County, TX, Chambers County, TX, Galveston County, TX
The radar
The Houston radar (KHGX), 17 km from the middle of the area, began a volume at 00:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 15, 7:04 PM CDT | TSTM WND GST 54 | Galveston Airport, Galv, TX | STRONG THUNDERSTORM WINDS OF 40 MPH WITH GUSTS OF 54 MPH. |
| Jun 15, 7:07 PM CDT | TSTM WND GST 50 | 3 Ne Galveston, TX | WINDS OF 40-50 MPH. |
| Jun 15, 7:10 PM CDT | MARINE TSTM WIND 53 | 4 Ene Texas City, TX | WEATHERFLOW TEXAS CITY LEVEE SITE. |
| Jun 15, 7:17 PM CDT | MARINE TSTM WIND 50 | 2 Ene Jamaica Beach, TX | MESONET STATION FW5912 GALVESTON. |
| Jun 15, 7:21 PM CDT | MARINE TSTM WIND 45 | 3 E La Marque, TX | MESONET STATION XTEX TEXAS CITY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.0 hours before the alert went out and 189 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
- 1305 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
175
WUUS54 KHGX 160002
SVRHGX
TXC039-071-167-160045-
/O.NEW.KHGX.SV.W.0067.210616T0002Z-210616T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
702 PM CDT Tue Jun 15 2021
The National Weather Service in League City has issued a
* Severe Thunderstorm Warning for...
Galveston County in southeastern Texas...
Eastern Brazoria County in southeastern Texas...
South central Chambers County in southeastern Texas...
* Until 745 PM CDT.
* At 700 PM CDT, severe thunderstorms were located along a line
extending from near Baytown to Crystal Beach. Movement was
southwest at 30 mph. Strong outflow winds can be expected in
advance of the main line of storms as well.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
League City, Galveston Causeway, Galveston Island West End, Texas
City, southern Friendswood, Dickinson, La Marque, Santa Fe,
Webster, Hitchcock, Kemah, Galveston Pier 21, Nassau Bay, Bayou
Vista, Clear Lake Shores, Jamaica Beach, Tiki Island, San Leon,
Scholes Field and Port Bolivar.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2935 9446 2929 9458 2919 9467 2899 9498
2914 9516 2918 9515 2921 9520 2920 9512
2917 9510 2921 9503 2947 9523 2951 9517
2950 9516 2951 9511 2954 9510 2956 9507
2955 9503 2947 9491 2960 9482 2952 9455
TIME...MOT...LOC 0000Z 036DEG 26KT 2962 9496 2948 9475 2922 9447
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
434
WWUS54 KHGX 160038
SVSHGX
Severe Weather Statement
National Weather Service Houston/Galveston TX
738 PM CDT Tue Jun 15 2021
TXC071-160048-
/O.CAN.KHGX.SV.W.0067.000000T0000Z-210616T0045Z/
Chambers TX-
738 PM CDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CHAMBERS COUNTY
IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
LAT...LON 2899 9498 2914 9516 2918 9515 2921 9520
2920 9512 2917 9510 2921 9503 2947 9523
2951 9517 2950 9516 2951 9511 2954 9510
2953 9508 2956 9507 2955 9503 2936 9495
2932 9485 2926 9479 2919 9467
TIME...MOT...LOC 0038Z 036DEG 26KT 2944 9511 2930 9490 2904 9462
$$
TXC039-167-160045-
/O.CON.KHGX.SV.W.0067.000000T0000Z-210616T0045Z/
Galveston TX-Brazoria TX-
738 PM CDT Tue Jun 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR GALVESTON AND EASTERN BRAZORIA COUNTIES...
At 738 PM CDT, severe thunderstorms were located along a line
extending from League City to Galveston Causeway to 19 miles
southeast of Galveston Pleasure Pier, moving southwest at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
League City, Galveston Island West End, Galveston Causeway, Texas
City, southern Friendswood, Dickinson, La Marque, Santa Fe, Webster,
Hitchcock, Kemah, Nassau Bay, Bayou Vista, Clear Lake Shores, Jamaica
Beach, Tiki Island, Galveston State Park, Schlitterbahn, Scholes
Field and Offatts Bayou.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2899 9498 2914 9516 2918 9515 2921 9520
2920 9512 2917 9510 2921 9503 2947 9523
2951 9517 2950 9516 2951 9511 2954 9510
2953 9508 2956 9507 2955 9503 2936 9495
2932 9485 2926 9479 2919 9467
TIME...MOT...LOC 0038Z 036DEG 26KT 2944 9511 2930 9490 2904 9462
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 7:08 PM CDT | Special Weather Statement | HGX | Liberty | 52 min |
| Jun 15, 7:14 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston, Harris | 31 min |
| Jun 15, 7:21 PM CDT | Special Weather Statement | HGX | Montgomery | 39 min |
| Jun 15, 7:26 PM CDT | Special Marine Warning | HGX | 94 min | |
| Jun 15, 7:31 PM CDT | Special Weather Statement | HGX | Brazoria, Fort Bend | 59 min |
| Jun 15, 7:33 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes | 42 min |
| Jun 15, 8:04 PM CDT | Special Weather Statement | HGX | Montgomery | 41 min |
| Jun 15, 8:24 PM CDT | Special Weather Statement | HGX | Brazos, Burleson | 51 min |
| Jun 15, 8:30 PM CDT | Special Marine Warning | HGX | 30 min | |
| Jun 15, 8:47 PM CDT | Special Weather Statement | HGX | Waller | 28 min |
| Jun 15, 9:02 PM CDT | Special Weather Statement | HGX | Washington | 43 min |
| Jun 15, 9:12 PM CDT | Special Weather Statement | HGX | Fort Bend | 48 min |
| Jun 15, 9:20 PM CDT | Special Marine Warning | HGX | 115 min | |
| Jun 15, 9:23 PM CDT | Small Craft Advisory | HGX | 2 hr | |
| Jun 16, 4:16 PM CDT | Special Weather Statement | HGX | Jackson | 44 min |
| Jun 16, 4:17 PM CDT | Special Marine Warning | HGX | 58 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; radar from the NEXRAD Level II archive.