Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 125, NWS Tulsa, OK

April 24, 2009Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 24, 2009, 6:49 PM CDT for Pushmataha County, Oklahoma. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 24, 2009, 6:49 PM CDT (23:49 UTC)
Expired: Apr 24, 2009, 7:30 PM CDT
In force: 41 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 134 km from the middle of the area, began a volume at 23:48 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.8 hours before the alert went out and 205 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 996 J/kg
Mixed-layer CIN: -298 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 24, 6:40 PM CDT, 9 minutes earlier.

Area forecast discussion, Apr 24, 6:40 PM CDT, 9 minutes before

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Hazardous weather outlook, Apr 24, 5:13 PM CDT, 1 hour 36 minutes before

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In the hours before

Special weather statement, Apr 24, 3:42 PM CDT, 3 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
342 PM CDT FRI APR 24 2009

OKZ073-075-242130-
LATIMER OK-PITTSBURG OK-
342 PM CDT FRI APR 24 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 430 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     CENTRAL PITTSBURG AND WESTERN LATIMER

AT 342 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
SOUTHEAST OF PITTSBURG...MOVING NORTHEAST AT 30 MPH. SOME LOCATIONS
THAT WILL BE AFFECTED BY THIS STORM INCLUDE...GOWEN...PITTSBURG...
BLANCO...HARTSHORNE...HAILEYVILLE...DOW...BACHE...ALDERSON AND KREBS.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3465 9589 3468 9589 3468 9591 3504 9571
      3486 9543 3460 9569
TIME...MOT...LOC 2042Z 217DEG 24KT 3468 9577

Special weather statement, Apr 24, 4:05 PM CDT, 2 hours 44 minutes before

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Local storm report, Apr 24, 4:14 PM CDT, 2 hours 35 minutes before

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Special weather statement, Apr 24, 6:32 PM CDT, 17 minutes before

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The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 11:23 PM CDT	Special Weather Statement	TSA	Creek	37 min
Apr 24, 8:51 AM CDT	Wind Advisory	TSA	Adair, Cherokee, Craig, Creek, Delaware, Mayes and 7 more	11 hr
Apr 24, 3:42 PM CDT	Special Weather Statement	TSA	Pittsburg	48 min
Apr 24, 3:45 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	19 min
Apr 24, 4:05 PM CDT	Special Weather Statement	TSA	Latimer	40 min
Apr 24, 6:32 PM CDT	Special Weather Statement	TSA	LeFlore	28 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2009 Every 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.