Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 1, NWS Midland/Odessa, TX
NWS Midland/Odessa, TX issued this tornado warning at Apr 21, 2011, 4:18 PM CDT for Pecos County, Terrell County, Texas. It was in force for 57 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
- Apr 21, 2011, 4:18 PM CDT (21:18 UTC)
- Expired
- Apr 21, 2011, 5:15 PM CDT
- In force
- 57 min
- Issued by
- NWS Midland/Odessa, TX
- Area
- Storm-based polygon
Counties Pecos County, TX, Terrell County, TX
The radar
The Midland/Odessa radar (KMAF), 155 km from the middle of the area, began a volume at 21:18 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 |
|---|---|---|---|
| Apr 21, 4:20 PM CDT | HAIL 1.75 | 25 Se Fort Stockton, TX | REPORTED ALONG HIGHWAY 285. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 21, 3:03 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 9.3 hours before the alert went out and 155 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
- 695 J/kg
- Mixed-layer CIN
- -359 J/kg
- Mixed-layer LCL
- 968 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 240 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
330
WFUS54 KMAF 212118
TORMAF
TXC371-443-212215-
/O.NEW.KMAF.TO.W.0001.110421T2118Z-110421T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
418 PM CDT THU APR 21 2011
THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHERN PECOS COUNTY IN SOUTHWEST TEXAS...
NORTH CENTRAL TERRELL COUNTY IN SOUTHWEST TEXAS...
* UNTIL 515 PM CDT
* AT 414 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER CENTRAL
PECOS COUNTY...OR 23 MILES SOUTHEAST OF FORT STOCKTON...ALONG HIGHWAY
285...MOVING SOUTHEAST AT 25 MPH.
* THE TORNADO WILL AFFECT THE FOLLOWING LOCATIONS...
OPEN COUNTRY OF SOUTHERN PECOS COUNTY...HIGHWAY 285 SOUTHEAST
OF FORT STOCKTON...OPEN COUNTRY OF WEST CENTRAL TERRELL COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.
THE SAFEST PLACES TO BE DURING A TORNADO IS IN A BASEMENT OR AN
UNDERGROUND SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY
FURNITURE. IF NO BASEMENT IS AVAILABLE... SEEK SHELTER ON THE LOWEST
FLOOR OF A STRONG BUILDING. MOVE INTO AN INTERIOR HALLWAY OR CLOSET
AWAY FROM WINDOWS. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
IF IN MOBILE HOMES OR VEHICLES... EVACUATE THEM AND MOVE TO A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE... LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN TEXAS.
&&
LAT...LON 3078 10252 3078 10215 3051 10209 3041 10219
3031 10237 3028 10269 3068 10280
TIME...MOT...LOC 2116Z 263DEG 13KT 3060 10268
$$2 follow-up statements
359
WWUS54 KMAF 212129
SVSMAF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
429 PM CDT THU APR 21 2011
TXC371-443-212215-
/O.CON.KMAF.TO.W.0001.000000T0000Z-110421T2215Z/
PECOS TX-TERRELL TX-
429 PM CDT THU APR 21 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR NORTH
CENTRAL TERRELL AND SOUTHERN PECOS COUNTIES...
AT 420 PM CDT...LOCAL LAW ENFORCEMENT REPORTED GOLFBALL SIZE HAIL
25 MILES SOUTHEAST OF FORT STOCKTON ALONG HIGHWAY 285. THIS
SEVERE THUNDERSTORM WAS WAS LOCATED ALONG 285...25 MILES SOUTHEAST
OF FORT STOCKTON...MOVING SOUTHEAST AT 20 MPH.
SOME LOCATIONS AFFECTED BY THIS SEVERE THUNDERSTORM INCLUDE...OPEN
COUNTRY OF SOUTHERN PECOS COUNTY...HIGHWAY 285 SOUTHEAST OF FORT
STOCKTON...OPEN COUNTRY OF NORTH CENTRAL TERRELL COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.
THE SAFEST PLACES TO BE DURING A TORNADO IS IN A BASEMENT OR AN
UNDERGROUND SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY
FURNITURE. IF NO BASEMENT IS AVAILABLE... SEEK SHELTER ON THE LOWEST
FLOOR OF A STRONG BUILDING. MOVE INTO AN INTERIOR HALLWAY OR CLOSET
AWAY FROM WINDOWS. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
IF IN MOBILE HOMES OR VEHICLES... EVACUATE THEM AND MOVE TO A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE... LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN TEXAS.
&&
LAT...LON 3078 10252 3078 10215 3051 10209 3041 10219
3031 10237 3028 10269 3068 10280
TIME...MOT...LOC 2126Z 263DEG 13KT 3057 10264
$$431
WWUS54 KMAF 212152
SVSMAF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
452 PM CDT THU APR 21 2011
TXC371-443-212215-
/O.CON.KMAF.TO.W.0001.000000T0000Z-110421T2215Z/
PECOS TX-TERRELL TX-
452 PM CDT THU APR 21 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR NORTH
CENTRAL TERRELL AND SOUTHERN PECOS COUNTIES...
AT 444 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
SEVERE THUNDERSTORM WAS LOCATED OVER OPEN COUNTRY OF SOUTH CENTRAL
PECOS COUNTY...OR ABOUT 28 MILES NORTHWEST OF SANDERSON...MOVING
SOUTHEAST AT 15 MPH.
SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...OPEN
COUNTRY OF SOUTHERN PECOS COUNTY...OPEN COUNTRY OF NORTH CENTRAL
TERRELL COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO MAY FORM AT ANY TIME... TAKE COVER NOW. ABANDON MOBILE
HOMES AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.
THE SAFEST PLACES TO BE DURING A TORNADO IS IN A BASEMENT OR AN
UNDERGROUND SHELTER. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY
FURNITURE. IF NO BASEMENT IS AVAILABLE... SEEK SHELTER ON THE LOWEST
FLOOR OF A STRONG BUILDING. MOVE INTO AN INTERIOR HALLWAY OR CLOSET
AWAY FROM WINDOWS. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
IF IN MOBILE HOMES OR VEHICLES... EVACUATE THEM AND MOVE TO A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE... LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN TEXAS.
&&
LAT...LON 3078 10252 3078 10215 3051 10209 3041 10219
3031 10237 3028 10269 3068 10280
TIME...MOT...LOC 2148Z 263DEG 13KT 3050 10261
$$The office that day
Everything else NWS Midland/Odessa, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 8:21 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 34 min |
| Apr 20, 9:08 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 37 min |
| Apr 21, 4:41 AM CDT | Red Flag Warning | MAF | 40 hr | |
| Apr 21, 5:12 AM CDT | High Wind Watch | MAF | 10 hr | |
| Apr 21, 3:29 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 61 min |
| Apr 21, 5:14 PM CDT | Tornado Warning | MAF | Pecos | 61 min |
| Apr 21, 5:47 PM CDT | Tornado Warning | MAF | Pecos, Terrell | 58 min |
| Apr 21, 6:01 PM CDT | Severe Thunderstorm Warning | MAF | Scurry | 14 min |
| Apr 21, 6:45 PM CDT | Tornado Warning | MAF | Terrell | 60 min |
Nearby
Tornado Warnings in Texas, 2011Every tornado warning in 2011Tornadoes in 2011
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.