Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 66, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Apr 30, 2011, 8:26 PM CDT for 4 counties in Texas. It was in force for 49 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 30, 2011, 8:26 PM CDT (01:26 UTC)
- Expired
- Apr 30, 2011, 9:15 PM CDT
- In force
- 49 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties Camp County, TX, Morris County, TX, Titus County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 115 km from the middle of the area, began a volume at 01:29 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 30, 8:26 PM CDT | TORNADO | 11 Nw Gilmer, TX | AN EF0 TORNADO TOUCHED DOWN EAST OF THE SIMPSONVILLE COMMUNITY. THE STORM CONTINUED ON AN EAST NORTHEAST TRAJECTORY CROSSING WOLVERINE ROAD AND LIFTED NEAR FM 2454. DAMAGE CONSISTED MOSTLY OF TREES SNAPPED AND/OR UPROOTED ESPECIALLY ALONG THE END OF THE TRACK |
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 30, 5:55 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 1.4 hours before the alert went out and 121 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
- 3108 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 891 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 13.1
The text
As transmitted, in the capitals the NWS used until 2016.
482 WFUS54 KSHV 010126 TORSHV TXC063-343-449-459-010215- /O.NEW.KSHV.TO.W.0066.110501T0126Z-110501T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 826 PM CDT SAT APR 30 2011 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A * TORNADO WARNING FOR... CAMP COUNTY IN NORTHEAST TEXAS... THIS INCLUDES THE CITIES OF...PITTSBURG...LEESBURG... SOUTHWESTERN MORRIS COUNTY IN NORTHEAST TEXAS... SOUTHEASTERN TITUS COUNTY IN NORTHEAST TEXAS... NORTHERN UPSHUR COUNTY IN NORTHEAST TEXAS... * UNTIL 915 PM CDT * AT 825 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 8 MILES SOUTH OF LEESBURG...OR JUST NORTHWEST OF BETTIE...MOVING NORTHEAST AT 25 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CEDAR SPRINGS AND CASON... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3317 9478 3282 9470 3280 9511 3295 9514 TIME...MOT...LOC 0125Z 244DEG 20KT 3288 9500 $$
1 follow-up statement
285 WWUS54 KSHV 010154 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 854 PM CDT SAT APR 30 2011 TXC063-343-449-459-010215- /O.CON.KSHV.TO.W.0066.000000T0000Z-110501T0215Z/ TITUS TX-MORRIS TX-CAMP TX-UPSHUR TX- 854 PM CDT SAT APR 30 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR UPSHUR... CAMP...MORRIS AND TITUS COUNTIES... AT 854 PM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A TORNADO. THIS TORNADO WAS LOCATED NEAR THE CENTER POINT COMMUNITY IN SOUTHEAST CAMP COUNTY...OR 9 MILES SOUTHEAST OF PITTSBURG...MOVING NORTHEAST AT 15 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HOLLY SPRINGS AND CASON PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER TO GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. TREES HAVE BEEN DOWNED IN NORTHERN UPSHUR COUNTY WITH THIS STORM. IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IMMEDIATELY! && LAT...LON 3283 9488 3300 9494 3317 9478 3286 9471 TIME...MOT...LOC 0152Z 244DEG 15KT 3293 9483 $$ 15
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:03 PM CDT | Tornado Warning | SHV | Wood | 42 min |
| Apr 30, 7:44 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Upshur, Wood | 61 min |
| Apr 30, 9:02 PM CDT | Tornado Warning | SHV | Camp, Cass, Morris, Titus, Upshur | 43 min |
| Apr 30, 9:44 PM CDT | Tornado Warning | SHV | Bowie, Cass | 46 min |
| Apr 30, 10:27 PM CDT | Severe Thunderstorm Warning | SHV | Cass | 63 min |
| May 1, 7:52 AM CDT | Severe Thunderstorm Warning | SHV | Red River | 53 min |
| May 1, 5:43 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Smith, Upshur, Wood | 62 min |
| May 1, 6:19 PM CDT | Tornado Warning | SHV | Gregg, Harrison, Marion, Upshur | 41 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.