Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Apr 11, 2009, 9:16 PM CDT for Fisher County, Nolan County, Texas. It was in force for 44 min. 2 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
- Apr 11, 2009, 9:16 PM CDT (02:16 UTC)
- Expired
- Apr 11, 2009, 10:00 PM CDT
- In force
- 44 min
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
Counties Fisher County, TX, Nolan County, TX
The radar
The Dyess AFB radar (KDYX), 112 km from the middle of the area, began a volume at 02:20 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 11, 9:55 PM CDT | HAIL 0.88 | 5 S Roby, TX | |
| Apr 11, 9:55 PM CDT | HAIL 0.88 | 8 W Roby, TX |
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 11, 7:41 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 2.3 hours before the alert went out and 296 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1736 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KSJT 120216 SVRSJT TXC151-353-120300- /O.NEW.KSJT.SV.W.0021.090412T0216Z-090412T0300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 916 PM CDT SAT APR 11 2009 THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN NOLAN COUNTY IN WEST CENTRAL TEXAS... WESTERN FISHER COUNTY IN WEST CENTRAL TEXAS... * UNTIL 1000 PM CDT * AT 913 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11 MILES SOUTHWEST OF WASTELLA...OR 4 MILES NORTHEAST OF COLORADO CITY...AND MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WASTELLA BY 930 PM CDT... ROBY AND LONGWORTH BY 1000 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR WEST CENTRAL TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY EVENING FOR WEST CENTRAL TEXAS. && LAT...LON 3254 10023 3233 10067 3270 10066 3288 10042 TIME...MOT...LOC 0215Z 231DEG 32KT 3246 10080 $$
1 follow-up statement
000 WWUS54 KSJT 120230 SVSSJT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 930 PM CDT SAT APR 11 2009 TXC151-353-120300- /O.CON.KSJT.SV.W.0021.000000T0000Z-090412T0300Z/ NOLAN TX-FISHER TX- 930 PM CDT SAT APR 11 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR FISHER AND NORTHWESTERN NOLAN COUNTIES... AT 925 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAS STRENGTHENED...AND IS NOW CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR US-84 NEAR THE NOLAN-FISHER COUNTY LINE...OR 11 MILES NORTHWEST OF ROSCOE...MOVING NORTHEAST AT 35 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... GANNON BY 945 PM CDT... CAPITOLA BY 950 PM CDT... BUSBY BY 955 PM CDT... ROBY AND LONGWORTH BY 1000 PM CDT... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR WEST CENTRAL TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY EVENING FOR WEST CENTRAL TEXAS. LAT...LON 3254 10023 3233 10067 3270 10066 3288 10042 TIME...MOT...LOC 0229Z 231DEG 32KT 3254 10068 $$
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 8:11 PM CDT | Tornado Warning | SJT | Sterling | 33 min |
| Apr 11, 8:50 PM CDT | Severe Thunderstorm Warning | SJT | Sterling | 24 min |
| Apr 11, 9:19 PM CDT | Severe Thunderstorm Warning | SJT | Sterling | 56 min |
| Apr 11, 9:52 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 23 min |
| Apr 11, 9:54 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Jones | 51 min |
| Apr 11, 10:07 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 53 min |
| Apr 11, 10:16 PM CDT | Severe Thunderstorm Warning | SJT | Irion, Sterling, Tom Green | 44 min |
| Apr 11, 10:45 PM CDT | Severe Thunderstorm Warning | SJT | Haskell, Jones | 49 min |
| Apr 11, 10:52 PM CDT | Severe Thunderstorm Warning | SJT | Crockett | 38 min |
| Apr 11, 11:15 PM CDT | Areal Flood Advisory | SJT | Fisher, Haskell, Jones, Shackelford, Throckmorton | 2 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009
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.