Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 534, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 16, 2009, 3:31 PM CDT for Kingfisher County, Logan County, Oklahoma. It was in force for 59 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
- Jul 16, 2009, 3:31 PM CDT (20:31 UTC)
- Expired
- Jul 16, 2009, 4:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Kingfisher County, OK, Logan County, OK
The radar
The Norman radar (KTLX), 76 km from the middle of the area, began a volume at 20:31 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 nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 8.5 hours before the alert went out and 79 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2015 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 16, 12:57 PM CDT, 2 hours 34 minutes earlier.
Area forecast discussion, Jul 16, 12:57 PM CDT, 2 hours 34 minutes before
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</html>Hazardous weather outlook, Jul 16, 11:37 AM CDT, 3 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1137 AM CDT THU JUL 16 2009
OKZ004>048-050>052-TXZ083>090-171200-
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-
1137 AM CDT THU JUL 16 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.
LOCATION...
THE SLIGHT RISK AREA INCLUDES ALL OF WESTERN NORTH TEXAS AND ALL OF
NORTHERN... WESTERN... CENTRAL... AND SOUTHERN OKLAHOMA.
TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM THIS
AFTERNOON THROUGH 2 AM.
IMPACTS...
DAMAGING WIND GUSTS TO 75 MPH AND HAIL TO THE SIZE OF GOLFBALLS WILL
BE THE MAIN CONCERN.
RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS BEGINNING THIS
EVENING AND CONTINUING INTO THE OVERNIGHT HOURS.
DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON
ACROSS PORTIONS OF OKLAHOMA. THERE IS ENOUGH INSTABILITY IN THE MID
LEVELS OF THE ATMOSPHERE TO SUPPORT AN ISOLATED SEVERE THUNDERSTORM.
HIGHER CHANCES OF SEVERE THUNDERSTORMS WILL OCCUR BEGINNING THIS
EVENING. A COMPLEX OF THUNDERSTORMS IS MOVING THROUGH NORTHERN
KANSAS LATE THURSDAY MORNING AND MAY MOVE INTO NORTHERN OKLAHOMA
LATE THIS AFTERNOON OR EARLY THIS EVENING. OTHER THUNDERSTORMS ARE
LIKELY TO FORM THIS AFTERNOON OVER THE CENTRAL HIGH PLAINS... AND
DEVELOP INTO A LARGER COMPLEX OF STORMS THIS EVENING. AS THE
THUNDERSTORM COMPLEXES MOVE SOUTH OR SOUTHEAST ACROSS THE AREA THIS
EVENING AND OVERNIGHT... LARGE HAIL AND DAMAGING WINDS WILL BE
POSSIBLE.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT FRIDAY JUL 17.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...60 PERCENT.
OTHER HAZARDOUS WEATHER...
HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO PRODUCE DANGEROUS
HEAT INDICES OVER PARTS OF WESTERN NORTH TEXAS AND SOUTHERN
OKLAHOMA. A HEAT ADVISORY REMAINS IN EFFECT TODAY FOR THESE AREAS.
PLEASE REFER TO THE LATEST VERSION OF THIS PRODUCT FOR MORE
INFORMATION.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
THUNDERSTORM OUTLOOK...
THERE WILL BE AT LEAST A SLIGHT CHANCE OF THUNDERSTORMS THROUGH
WEDNESDAY. THE WEATHER PATTERN FOR THE WEEKEND AND EARLY NEXT WEEK
WILL FAVOR NIGHTTIME STORM COMPLEXES... BUT SCATTERED STORMS WILL BE
POSSIBLE EACH AFTERNOON AND EVENING AS WELL.
OTHER HAZARDOUS WEATHER...
NONE.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5 AM
FRIDAY JULY 17.In the hours before
Special weather statement, Jul 16, 2:18 PM CDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 218 PM CDT THU JUL 16 2009 OKZ007-161930- GRANT OK- 218 PM CDT THU JUL 16 2009 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR GRANT COUNTY. A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF WAKITA AT 218 PM CDT...MOVING SOUTHEAST AT 20 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. ..SPEG.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 10:22 PM CDT | Severe Thunderstorm Warning | OUN | Payne | 35 min |
| Jul 15, 11:31 PM CDT | Severe Thunderstorm Warning | OUN | Grant, Kay | 59 min |
| Jul 15, 11:40 PM CDT | Areal Flood Advisory | OUN | Ellis | 3 hr |
| Jul 16, 12:10 AM CDT | Severe Thunderstorm Warning | OUN | Garfield, Grant, Kay, Noble | 65 min |
| Jul 16, 12:58 AM CDT | Areal Flood Advisory | OUN | Kay | 4 hr |
| Jul 16, 1:11 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Noble, Payne | 64 min |
| Jul 16, 3:43 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Jefferson, Love | 62 min |
| Jul 16, 4:23 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 52 min |
| Jul 16, 4:27 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Love | 63 min |
| Jul 16, 4:43 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Murray | 38 min |
| Jul 16, 4:46 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, Seminole | 37 min |
| Jul 16, 4:47 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Johnston | 58 min |
| Jul 16, 4:56 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland | 64 min |
| Jul 16, 5:09 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 36 min |
| Jul 16, 5:27 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Washita | 48 min |
| Jul 16, 5:33 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Pottawatomie | 34 min |
| Jul 16, 6:12 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Washita | 48 min |
| Jul 16, 6:35 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 40 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.