Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 351, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 13, 2009, 6:27 PM CDT for 4 counties in Oklahoma. It was in force for 63 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
- May 13, 2009, 6:27 PM CDT (23:27 UTC)
- Expired
- May 13, 2009, 7:30 PM CDT
- In force
- 63 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK
The radar
The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 23:31 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 |
|---|---|---|---|
| May 13, 5:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 11.5 hours before the alert went out and 3 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
- 701 J/kg
- Mixed-layer CIN
- -565 J/kg
- Mixed-layer LCL
- 1492 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 329 m²/s²
- 0-3 km storm-relative helicity
- 587 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 13, 3:13 PM CDT, 3 hours 14 minutes earlier.
Area forecast discussion, May 13, 3:13 PM CDT, 3 hours 14 minutes before
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</html>Hazardous weather outlook, May 13, 6:08 PM CDT, 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
608 PM CDT WED MAY 13 2009
OKZ004>048-050>052-TXZ083>090-141100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
608 PM CDT WED MAY 13 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS
PARTS OF NORTH CENTRAL AND CENTRAL OKLAHOMA. SURROUNDING THE
MODERATE RISK... IS A SLIGHT RISK AREA THAT ENCOMPASSES THE
REMAINDER OF WESTERN AND SOUTHERN OKLAHOMA AND MOST OF WESTERN NORTH
TEXAS.
LOCATION...
THE MODERATE RISK AREA IS GENERALLY EAST AND NORTH OF A LINE
EXTENDING FROM ALVA... TO WEATHERFORD... TO LINDSAY... TO ADA. THE
SLIGHT RISK AREA COVERS WESTERN AND SOUTHERN OKLAHOMA AND MOST OF
WESTERN NORTH TEXAS.
TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE THROUGH
TONIGHT.
IMPACTS...
LARGE... DAMAGING HAIL UP TO BASEBALL SIZE...ESPECIALLY EARLY THIS
EVENING. DAMAGING WIND GUSTS TO 75 MPH WILL ALSO BE POSSIBLE.
TORNADOES WILL ALSO BE POSSIBLE...MAINLY WITH STORMS THIS EVENING.
RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR POSSIBLE SEVERE WEATHER OPERATIONS FROM N
THROUGH TONIGHT.
DISCUSSION...
A COLD FRONT MOVING SOUTH THIS EVENING IS PROVIDING SUFFICIENT LIFT
FOR THUNDERSTORMS IN THE VERY UNSTABLE AIRMASS. THUNDERSTORMS WILL CONTINUE
TO DEVELOP NEAR THE FRONT AS IT APPROACHES INTERSTATE 40 DURING THE
EVENING. THROUGH THE NIGHT THUNDERSTORMS WILL EVOLVE INTO A LARGE
COMPLEX THAT WILL MOVE CENTRAL...SOUTH CENTRAL AND SOUTHEAST
OKLAHOMA.
WIND SPEEDS MAY BE ADEQUATE OVER THE NORTHERN HALF OF OKLAHOMA TO
SUPPORT SUPERCELL THUNDERSTORMS... WHICH COULD BE ENHANCED BY THE
LOW LEVEL WIND SHEAR NEAR THE COLD FRONT. IT IS THESE THUNDERSTORMS
THAT COULD PRODUCE A TORNADO.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT THURSDAY MAY 14.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...100 PERCENT.
OTHER HAZARDOUS WEATHER...
LOCALLY HEAVY RAINFALL WILL RESULT IN FLOODING OR PONDING OF WATER
ALONG STREAMS AND IN OTHER LOW-LYING AREAS. THE GREATEST THREAT OF
FLOODING IS IN CENTRAL AND SOUTHERN OKLAHOMA WHERE THE GROUND
REMAINS NEARLY SATURATED FROM PREVIOUS RAINFALL.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
THUNDERSTORM OUTLOOK...
WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE THURSDAY. THE CHANCE OF
THUNDERSTORMS WILL INCREASE FRIDAY NIGHT AND SATURDAY AS ANOTHER
COLD FRONT MOVES THROUGH THE AREA.
OTHER HAZARDOUS WEATHER...
LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE WITH STORMS THAT
FORM ALONG THE FRONT FRIDAY NIGHT AND SATURDAY. THIS MAY RESULT
IN FLOODING OR PONDING OF WATER ALONG STREAMS AND IN OTHER LOW-LYING
AREAS.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AROUND
5 AM THURSDAY.In the hours before
Local storm report, May 13, 4:02 PM CDT, 2 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORMAN OK
402 PM CDT WED MAY 13 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0855 PM TSTM WND GST 4 ESE ERICK 35.19N 99.80W
05/12/2009 M62.00 MPH BECKHAM OK MESONET
0900 PM TSTM WND GST 1 W ERICK 35.21N 99.88W
05/12/2009 E70.00 MPH BECKHAM OK TRAINED SPOTTER
TWO INCH DIAMETER TREE LIMBS WERE DOWNED FROM ONE MILE
WEST OF ERICK TO ERICK.
0900 PM HAIL 10 SW QUANAH 34.19N 99.87W
05/12/2009 E0.88 INCH HARDEMAN TX LAW ENFORCEMENT
NEAR THE LAZY U RANCH
0909 PM HAIL ERICK 35.21N 99.87W
05/12/2009 E1.25 INCH BECKHAM OK LAW ENFORCEMENT
QUARTER TO HALF DOLLAR HAIL.
0920 PM TSTM WND GST 1 NE ELK CITY 35.41N 99.40W
05/12/2009 M59.00 MPH BECKHAM OK AWOS
ELK CITY AIRPORT
0925 PM TSTM WND DMG 5 WSW ELK CITY 35.38N 99.49W
05/12/2009 BECKHAM OK TRAINED SPOTTER
SIGNS WERE BLOWN DOWN ONTO INTERSTATE 40 NEAR EXIT 26.
WEST BOUND LANES WERE CLOSED DUE TO SIGNS ON THE ROADWAY.
0935 PM HAIL 2 W CROWELL 33.98N 99.76W
05/12/2009 E2.75 INCH FOARD TX LAW ENFORCEMENT
0940 PM TSTM WND DMG 1 ENE FOSS 35.46N 99.16W
05/12/2009 WASHITA OK TRAINED SPOTTER
THE STRONG WINDS CAUSED AN 18-WHEELER TO JACKNIFE ON
INTERSTATE 40, BLOCKING ALL LANES OF TRAFFIC. THE WINDS
WERE ESTIMATED OF AT LEAST 60 MPH.
0943 PM HAIL 1 N CROWELL 34.00N 99.72W
05/12/2009 E2.50 INCH FOARD TX STORM CHASER
0945 PM TSTM WND GST 3 S ALTUS 34.59N 99.33W
05/12/2009 M59.00 MPH JACKSON OK MESONET
0955 PM TSTM WND GST 4 S TIPTON 34.44N 99.14W
05/12/2009 M60.00 MPH TILLMAN OK MESONET
0958 PM HAIL 2 S CHILLICOTHE 34.23N 99.51W
05/12/2009 E1.00 INCH HARDEMAN TX AMATEUR RADIO
1015 PM FLOOD 7 N CHILLICOTHE 34.36N 99.51W
05/12/2009 HARDEMAN TX AMATEUR RADIO
WATER OVER THE ROADWAY
1026 PM HAIL HOLLISTER 34.34N 98.87W
05/12/2009 E0.88 INCH TILLMAN OK EMERGENCY MNGR
1035 PM TSTM WND GST 2 ENE CHATTANOOGA 34.44N 98.62W
05/12/2009 M66.00 MPH COMANCHE OK FIRE DEPT/RESCUE
1127 PM HAIL CYRIL 34.90N 98.20W
05/12/2009 E1.00 INCH CADDO OK AMATEUR RADIO
1132 PM TSTM WND GST 3 NW CHICKASHA 35.07N 97.99W
05/12/2009 M58.00 MPH GRADY OK AWOS
CHICKASHA AIRPORT
1150 PM NON-TSTM WND GST 1 W KINGFISHER 35.86N 97.95W
05/12/2009 M59.00 MPH KINGFISHER OK MESONET
WIND GUSTS OVER 50 MPH BETWEEN 1145 PM AND 1210 AM.
1230 AM NON-TSTM WND GST 5 WNW EL RENO 35.56N 98.04W
05/13/2009 M57.00 MPH CANADIAN OK MESONET
NUMEROUS WIND GUSTS OVER 50 MPH BETWEEN 1215 AM AND 115
AM.
1243 AM NON-TSTM WND GST 2 S GUTHRIE 35.85N 97.42W
05/13/2009 M61.00 MPH LOGAN OK ASOS
AT GUTHRIE-EDMOND REGIONAL AIRPORT /KGOK/.
1255 AM NON-TSTM WND GST 5 W YUKON 35.49N 97.82W
05/13/2009 M55.00 MPH CANADIAN OK AWOS
AT PAGE AIRPORT /KRCE/.
0110 AM NON-TSTM WND DMG 4 SW EDMOND 35.61N 97.52W
05/13/2009 OKLAHOMA OK AMATEUR RADIO
POWER LINES REPORTED DOWNED ALONG MEMORIAL ROAD BETWEEN
SANTA FE AVENUE AND WESTERN AVENUE.
0124 AM NON-TSTM WND GST 2 WNW WARR ACRES 35.53N 97.65W
05/13/2009 M74.00 MPH OKLAHOMA OK ASOS
AT WILEY POST AIRPORT /KPWA/.
0130 AM NON-TSTM WND DMG 5 NW OKLAHOMA CITY 35.53N 97.56W
05/13/2009 OKLAHOMA OK EMERGENCY MNGR
ROOF DAMAGE TO APARTMENTS NEAR NORTHWEST EXPRESSWAY AND
MAY AVENUE. TIME UNKNOWN.
0130 AM NON-TSTM WND DMG 5 NNW WARR ACRES 35.59N 97.65W
05/13/2009 OKLAHOMA OK EMERGENCY MNGR
TREE BLOWN ONTO CAR NEAR NORTHWEST 122ND AND COUNCIL.
TIME UNKNOWN.
0135 AM NON-TSTM WND GST 2 ENE SPENCER 35.53N 97.34W
05/13/2009 M58.00 MPH OKLAHOMA OK MESONET
NUMEROUS WIND GUSTS ABOVE 50 MPH BETWEEN 125 AM AND 220
AM.
0135 AM NON-TSTM WND GST 6 N OKLAHOMA CITY 35.55N 97.51W
05/13/2009 M59.00 MPH OKLAHOMA OK MESONET
NUMEROUS WIND GUSTS ABOVE 50 MPH BETWEEN 105 AM AND 2 AM.
0150 AM NON-TSTM WND GST 4 W OKLAHOMA CITY 35.47N 97.58W
05/13/2009 M50.00 MPH OKLAHOMA OK MESONET
&&
DEWSpecial weather statement, May 13, 5:43 PM CDT, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 543 PM CDT WED MAY 13 2009 OKZ007-132300- GRANT OK- 543 PM CDT WED MAY 13 2009 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR GRANT COUNTY. A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTHWEST OF RENFROW AT 543 PM CDT...MOVING NORTHEAST AT 30 MPH. SMALL HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. PEOPLE IN GRANT COUNTY SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER CONDITIONS. 30
Special weather statement, May 13, 5:46 PM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 546 PM CDT WED MAY 13 2009 OKZ011-132300- MAJOR OK- 546 PM CDT WED MAY 13 2009 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR MAJOR COUNTY. A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTHEAST OF FAIRVIEW AT 546 PM CDT...MOVING NORTHEAST AT 20 MPH. SMALL HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. PEOPLE IN MAJOR COUNTY SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER CONDITIONS. 30
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 8:41 PM CDT | Severe Thunderstorm Warning | OUN | Beckham | 64 min |
| May 12, 8:46 PM CDT | Severe Thunderstorm Warning | OUN | Harmon, Jackson | 59 min |
| May 12, 9:13 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Roger Mills, Washita | 62 min |
| May 12, 9:26 PM CDT | Areal Flood Advisory | OUN | Beckham, Washita | 3 hr |
| May 12, 9:31 PM CDT | Areal Flood Advisory | OUN | Jackson | 3 hr |
| May 12, 9:42 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Kiowa, Tillman | 63 min |
| May 12, 10:11 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Custer, Washita | 64 min |
| May 12, 10:27 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Cotton, Kiowa, Tillman | 63 min |
| May 13, 1:12 AM CDT | High Wind Warning | OUN | Canadian, Kingfisher, Logan, Oklahoma | 108 min |
| May 13, 11:40 AM CDT | Flash Flood Watch | OUN | Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 28 more | 18 hr |
| May 13, 2:56 PM CDT | Wind Advisory | OUN | Beckham, Blaine, Custer, Dewey, Ellis, Major and 3 more | 10 hr |
| May 13, 5:52 PM CDT | Severe Thunderstorm Warning | OUN | Grant, Kay | 38 min |
| May 13, 6:08 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Dewey, Garfield, Kingfisher, Major | 52 min |
| May 13, 6:48 PM CDT | Tornado Warning | OUN | Garfield, Grant, Kay, Noble | 42 min |
| May 13, 6:56 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Canadian, Garfield, Kingfisher, Logan, Major and 1 more | 64 min |
| May 12, 9:01 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Knox | 59 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.