Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Feb 26, 2009, 9:55 PM CST for McCurtain County, Oklahoma; Red River County, Texas. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 26, 2009, 9:55 PM CST (03:55 UTC)
- Expired
- Feb 26, 2009, 10:30 PM CST
- In force
- 35 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties McCurtain County, OK, Red River County, TX
The radar
The Shreveport radar (KSHV), 161 km from the middle of the area, began a volume at 03:56 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 26, 6:12 PM CST | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 3.9 hours before the alert went out and 164 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
- 342 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 1383 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 266 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS54 KSHV 270355
SVRSHV
OKC089-TXC387-270430-
/O.NEW.KSHV.SV.W.0021.090227T0355Z-090227T0430Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
955 PM CST THU FEB 26 2009
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
RED RIVER COUNTY IN NORTHEAST TEXAS...
THIS INCLUDES THE CITIES OF...CLARKSVILLE...BOXELDER...
EXTREME SOUTHEASTERN MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA...
* UNTIL 1030 PM CST
* AT 953 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR BAGWELL...OR ABOUT 7 MILES NORTHWEST OF
CLARKSVILLE...AND MOVING EAST AT 36 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
CLARKSVILLE BY 1005 PM CST...
6 MILES NORTH OF BOXELDER BY 1025 PM CST...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY
MORNING FOR SOUTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA AND NORTHEAST
TEXAS.
LAT...LON 3383 9531 3370 9474 3368 9474 3367 9467
3368 9465 3366 9457 3365 9459 3367 9459
3366 9474 3340 9475 3349 9530
TIME...MOT...LOC 0355Z 289DEG 31KT 3365 9515
$$
BUTTS2 follow-up statements
000
WWUS54 KSHV 270421
SVSSHV
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1021 PM CST THU FEB 26 2009
OKC089-TXC387-270430-
/O.CON.KSHV.SV.W.0021.000000T0000Z-090227T0430Z/
MCCURTAIN OK-RED RIVER TX-
1021 PM CST THU FEB 26 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CST
FOR RED RIVER AND EXTREME SOUTH CENTRAL MCCURTAIN COUNTIES...
AT 1018 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY TO NICKEL
SIZE HAIL. THIS STORM WAS LOCATED NEAR ENGLISH...OR ABOUT 8 MILES
NORTH OF BOXELDER...MOVING EAST AT 40 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
8 MILES NORTH OF LYDIA BY 1030 PM CST...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY
MORNING FOR SOUTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA AND NORTHEAST
TEXAS.
STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN
SHREVEPORT.
LAT...LON 3383 9531 3370 9474 3368 9474 3367 9467
3368 9465 3366 9457 3365 9459 3367 9459
3366 9474 3340 9475 3349 9530
TIME...MOT...LOC 0421Z 286DEG 35KT 3358 9482
$$
BUTTS000
WWUS54 KSHV 270431
SVSSHV
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1031 PM CST THU FEB 26 2009
OKC089-TXC387-270440-
/O.EXP.KSHV.SV.W.0021.000000T0000Z-090227T0430Z/
MCCURTAIN OK-RED RIVER TX-
1031 PM CST THU FEB 26 2009
...THE SEVERE THUNDERSTORM WARNING FOR RED RIVER AND EXTREME SOUTH
CENTRAL MCCURTAIN COUNTIES EXPIRES AT 1030 PM CST...
THE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED AS IT MOVED
OUT OF THE WARNED AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY
MORNING FOR SOUTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA AND NORTHEAST
TEXAS.
STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIOAL WEATHER SERVICE IN
SHREVEPORT.
LAT...LON 3383 9531 3370 9474 3368 9474 3367 9467
3368 9465 3366 9457 3365 9459 3367 9459
3366 9474 3340 9475 3349 9530
TIME...MOT...LOC 0430Z 286DEG 35KT 3355 9471
$$
BUTTSThe office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 8:38 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 52 min |
| Feb 26, 9:08 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 52 min |
| Feb 26, 9:47 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 43 min |
| Feb 26, 10:02 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 28 min |
| Feb 26, 10:40 PM CST | Severe Thunderstorm Warning | SHV | McCurtain | 50 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2009Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.