Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 69, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at May 1, 2011, 6:19 PM CDT for 4 counties in Texas. It was in force for 41 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
- May 1, 2011, 6:19 PM CDT (23:19 UTC)
- Expired
- May 1, 2011, 7:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties Gregg County, TX, Harrison County, TX, Marion County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 93 km from the middle of the area, began a volume at 23:22 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 |
|---|---|---|---|
| May 1, 6:22 PM CDT | FUNNEL CLOUD | 2 Nw Gladewater, TX | FUNNEL CLOUD WAS OBSERVED FROM A WALL CLOUD JUST NORTHWEST OF GLADEWATER. HOWEVER...NO KNOWN TOUCHDOWNS WERE NOTED. REPORT FROM A BROADCAST METEOROLOGIST WHO WAS CHASING THIS STORM. |
| May 1, 6:22 PM CDT | HAIL 1.25 | 9 S Gilmer, TX | HALF DOLLAR SIZE HAIL FELL AT FM 726 AND HIGHWAY 271 SOUTH OF GILMER. THIS IS AN UPDATE FROM A PREVIOUS REPORT. |
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 |
|---|---|---|---|
| May 1, 12:47 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 11.3 hours before the alert went out and 101 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
- 2344 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 277 m²/s²
- 0-3 km storm-relative helicity
- 370 m²/s²
- Significant tornado parameter
- 4.9
- Supercell composite
- 18.4
The text
As transmitted, in the capitals the NWS used until 2016.
283
WFUS54 KSHV 012319
TORSHV
TXC183-203-315-459-020000-
/O.NEW.KSHV.TO.W.0069.110501T2319Z-110502T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
619 PM CDT SUN MAY 1 2011
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN GREGG COUNTY IN NORTHEAST TEXAS...
THIS INCLUDES THE CITY OF GLADEWATER...
NORTHWESTERN HARRISON COUNTY IN NORTHEAST TEXAS...
WESTERN MARION COUNTY IN NORTHEAST TEXAS...
SOUTHERN UPSHUR COUNTY IN NORTHEAST TEXAS...
THIS INCLUDES THE CITY OF GILMER...
* UNTIL 700 PM CDT
* AT 617 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WEST
MOUNTAIN...OR NEAR GILMER...MOVING NORTHEAST AT 45 MPH.
* THE TORNADO WILL BE NEAR...
DIANA BY 630 PM CDT...
ORE CITY BY 635 PM CDT...
CEDAR SPRINGS BY 640 PM CDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
SEVERAL REPORTS OF LARGE HAIL...FROM QUARTER TO GOLFBALL SIZE...HAVE
BEEN REPORTED WITH THIS STORM.
&&
LAT...LON 3290 9472 3288 9470 3288 9448 3273 9438
3248 9499 3253 9499 3253 9501 3268 9507
TIME...MOT...LOC 2318Z 237DEG 39KT 3267 9491
$$1 follow-up statement
607
WWUS54 KSHV 012355
SVSSHV
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
655 PM CDT SUN MAY 1 2011
TXC183-203-315-459-020000-
/O.CON.KSHV.TO.W.0069.000000T0000Z-110502T0000Z/
UPSHUR TX-MARION TX-HARRISON TX-GREGG TX-
655 PM CDT SUN MAY 1 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR GREGG...
HARRISON...MARION AND UPSHUR COUNTIES...
AT 651 PM CDT...A TORNADO WAS REPORTED. THIS TORNADO WAS LOCATED
NEAR ORE CITY...OR 11 MILES EAST OF GILMER...MOVING NORTHEAST AT 25
MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WARNING MEANS THAT ROTATION IS STILL BEING DETECTED IN
THIS STORM. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE
INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.
&&
LAT...LON 3290 9472 3288 9470 3288 9448 3273 9438
3248 9499 3253 9499 3253 9501 3268 9507
TIME...MOT...LOC 2355Z 234DEG 21KT 3278 9473
$$
VIIThe 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, 8:26 PM CDT | Tornado Warning | SHV | Camp, Morris, Titus, Upshur | 49 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 |
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.