Alert archive / Oklahoma / Red Flag Warnings in 2009
Red Flag Warning 19, NWS Norman, OK
NWS Norman, OK issued this red flag warning at Mar 23, 2009, 4:44 AM CDT for 13 counties in Oklahoma; Foard County, Hardeman County, Knox County, Texas. It took effect at Mar 23, 2009, 12:00 PM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 23, 2009, 4:44 AM CDT (09:44 UTC)
- In effect from
- Mar 23, 2009, 12:00 PM CDT
- Expired
- Mar 23, 2009, 9:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Norman, OK
Counties Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Foard County, TX, Hardeman County, TX, Knox County, TX
The radar
The Altus AFB radar (KFDR), 123 km from the middle of the area, began a volume at 09:49 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 9.7 hours before the alert went out and 209 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
- 350 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1745 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
What forecasters said that day
The local office's own words before this red flag 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 red flag warning went out at Mar 23, 3:51 AM CDT, 53 minutes earlier.
Area forecast discussion, Mar 23, 3:51 AM CDT, 53 minutes before
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</html>Hazardous weather outlook, Mar 22, 12:00 PM CDT, 16 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CDT SUN MAR 22 2009
OKZ004>048-050>052-TXZ083>090-231200-
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-
1200 PM CDT SUN MAR 22 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...THIS AFTERNOON AND TONIGHT...
THUNDERSTORM OUTLOOK...
THE CHANCE OF SEVERE THUNDERSTORMS WILL REMAIN LOW THROUGH TONIGHT.
DISCUSSION...
A FEW THUNDERSTORMS WILL BE POSSIBLE THROUGH TONIGHT AS A
DISTURBANCE MOVES ACROSS THE REGION AND THE LOW-LEVEL JET
STRENGTHENS TONIGHT. HOWEVER...WEAK INSTABILITY AND A MODERATELY
STRONG CAP WILL LIMIT THUNDERSTORM DEVELOPMENT...BUT WITH STRONG
WIND SHEAR IN PLACE...A FEW SEVERE STORMS COULD OCCUR. THE MOST
LIKELY LOCATION FOR SEVERE STORMS WILL BE WESTERN AND NORTHERN
OKLAHOMA. IF SEVERE STORMS DO OCCUR...ONE-INCH DIAMETER HAIL AND
DAMAGING WIND GUSTS WILL BE THE MAIN CONCERNS.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT MONDAY MAR 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...40 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...20 PERCENT.
OTHER HAZARDOUS WEATHER...
STRONG SOUTH WINDS WILL CONTINUE OVERNIGHT...ESPECIALLY ACROSS
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...
THUNDERSTORM OUTLOOK...
A STRONG STORM SYSTEM WILL MOVE INTO THE PLAINS MONDAY...ALONG WITH
A SHARPENING DRYLINE THAT WILL MOVE EAST INTO WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS. THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS
OKLAHOMA AND WESTERN NORTH TEXAS LATE MONDAY THROUGH EARLY
TUESDAY...WITH THE GREATEST RISK OVER CENTRAL AND NORTH-CENTRAL
OKLAHOMA. SEVERE STORMS WILL BE POSSIBLE DUE TO THE STRONG WIND
SHEAR THAT IS EXPECTED TO DEVELOP ACROSS THE AREA. HOWEVER... THE
QUALITY OF MOISTURE AVAILABLE MAY BE SOMEWHAT LIMITED. THE MAIN
CONCERNS WILL BE LARGE HAIL AND DAMAGING WINDS. TORNADOES ALSO CAN
NOT BE RULED OUT... ESPECIALLY WITH ANY DISCRETE STORMS THAT MAY
DEVELOP. THUNDERSTORMS WILL REMAIN POSSIBLE INTO TUESDAY AS A COLD
FRONT MOVES ACROSS THE REGION. STORM SPOTTER GROUPS AND EMERGENCY
MANAGERS ARE ENCOURAGED TO LISTEN FOR FURTHER UPDATES... AND TO BE
PREPARED FOR THE POSSIBILITY OF AN ACTIVE PERIOD OF SEVERE WEATHER
LATE MONDAY.
AFTER A BRIEF BREAK WEDNESDAY... THUNDERSTORM CHANCES WILL RETURN
THURSDAY AND CONTINUE INTO EARLY THIS WEEKEND.
OTHER HAZARDOUS WEATHER...
STRONG WINDS ARE EXPECTED ON MONDAY. IN ADDITION...WEATHER
CONDITIONS WILL BE STRONGLY SUPPORTIVE FOR THE RAPID SPREAD OF ANY
WILDFIRES BEHIND THE DRYLINE MONDAY AFTERNOON AND EVENING...MAINLY
ACROSS WESTERN OKLAHOMA AND WESTERN NORTH TEXAS.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
MONDAY.
MAXWELLThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 3:23 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Garfield, Grant | 37 min |
| Mar 23, 3:58 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 47 min |
| Mar 23, 4:31 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 19 min |
| Mar 23, 5:42 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 48 min |
| Mar 23, 6:27 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher, Logan | 48 min |
| Mar 23, 6:40 PM CDT | Tornado Warning | OUN | Logan | 35 min |
| Mar 23, 6:47 PM CDT | Severe Thunderstorm Warning | OUN | Harmon, Jackson | 43 min |
| Mar 23, 6:51 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Kiowa, Tillman | 39 min |
Nearby
Red Flag Warnings in Oklahoma, 2009Red Flag Warnings in Texas, 2009Every red flag 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.