Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 512, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 24, 2001, 8:18 AM CDT for Woods County, Woodward County, Oklahoma. It was in force for 42 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 24, 2001, 8:18 AM CDT (13:18 UTC)
- Expired
- Aug 24, 2001, 9:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Woods County, OK, Woodward County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 24, 8:25 AM CDT | Hail 0.75 | Freedom, OK | |
| Aug 24, 8:40 AM CDT | Hail 1 | Mooreland, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 1.3 hours before the alert went out and 150 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
- 477 J/kg
- Mixed-layer CIN
- -292 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Aug 24, 2:05 AM CDT, 6 hours 13 minutes earlier.
Area forecast discussion, Aug 24, 2:05 AM CDT, 6 hours 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 205 AM CDT FRI AUG 24 2001 THE FRONT THAT HAS BEEN ACROSS NORTHERN OK AND SOUTHERN KS WILL BE THERE AGAIN TODAY PROVIDING THE SURFACE FOCUS FOR SCATTERED SHOWERS AND THUNDERSTORMS. LITTLE CHANGE IS EXPECTED IN THE UPPER TROUGH PATTERN OVER THE CENTRAL AND SOUTHERN PLAINS UNTIL SATURDAY AFTERNOON. THE LOW OVER NE SHOULD MOVE INTO THE UPPER MIDWEST ALLOWING A MORE NORTHWEST FLOW PATTERN INTO OK AND HELPING DRIVE THE FRONT TOWARD THE RED RIVER BY SATURDAY EVENING. THIS WILL SHIFT THE FOCUS OF SHOWER/STORM DEVELOPMENT TO SOUTHERN OK SATURDAY AND SATURDAY NIGHT. THE MEAGER SURFACE HIGH IS EXPECTED TO MOVE INTO NORTHERN AND CENTRAL OK SUNDAY WITH A SLIGHT DECREASE IN TEMPERATURES ACROSS THE NORTH AND CENTRAL SUNDAY. FCSTID = 9 OKC 96 70 93 70 / 30 30 30 20 HBR 99 71 96 68 / 20 30 30 20 SPS 100 73 99 71 / 20 20 20 30 GAG 94 65 91 65 / 20 30 20 20 PNC 93 70 90 68 / 30 30 30 20 DUA 96 73 95 72 / 20 20 30 30 .OUN... OK...NONE. TX...NONE.
In the hours before
Special weather statement, Aug 24, 7:00 AM CDT, 1 hour 18 minutes before
OKZ004>048-050>052-TXZ083>090-241430- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 700 AM CDT FRI AUG 24 2001 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS MUCH OF CENTRAL AND WESTERN OKLAHOMA... AND A PORTION OF WESTERN NORTH TEXAS. THE SLIGHT RISK AREA IS ALONG AND NORTH OF A LINE ROUGHLY FROM SEYMOUR... TO WICHITA FALLS... TO PURCELL... TO SEMINOLE. THE PRIMARY SEVERE WEATHER THREATS WILL BE DAMAGING WIND GUSTS AND LARGE HAIL. HEAVY RAINFALL WILL ALSO BE POSSIBLE... ESPECIALLY LATER THIS EVENING AND OVERNIGHT. A MID AND UPPER LEVEL STORM SYSTEM CENTERED NEAR THE KANSAS-NEBRASKA BORDER EARLY THIS MORNING WILL MOVE SLOWLY EASTWARD THROUGH TODAY AND TONIGHT. BY THIS AFTERNOON... A WEAK SURFACE FRONT WILL BE NEARLY STATIONARY ALONG THE KANSAS-OKLAHOMA BORDER... AND OTHER RESIDUAL OUTFLOW BOUNDARIES FROM MORNING THUNDERSTORMS ARE LIKELY TO PERSIST SOUTH OF THE FRONT ACROSS WESTERN AND NORTHERN OKLAHOMA. CONSIDERABLE SUNSHINE TODAY ALONG AND SOUTH OF THE BOUNDARY WILL AID THE DEVELOPMENT OF MODERATE TO STRONG INSTABILITY BY MID TO LATE AFTERNOON ACROSS THE SLIGHT RISK AREA. IN ADDITION... A BAND OF STRONGER MID LEVEL WINDS WILL EXIST OVER NORTHERN OKLAHOMA WHICH WILL ACT TO INCREASE VERTICAL WIND SHEAR ACROSS THE REGION. THUNDERSTORMS ARE EXPECTED TO DEVELOP NEAR THE FRONT AND RESIDUAL OUTFLOW BOUNDARIES THIS AFTERNOON AND EVENING. SOME OF THE STORMS ARE EXPECTED TO BECOME SEVERE WITH A THREAT OF DAMAGING WIND GUSTS AND LARGE HAIL. AS THE LOW LEVEL JET INCREASES THIS EVENING AND OVERNIGHT... STORMS MAY CONTINUE TO DEVELOP WITH AN INCREASING THREAT FOR HEAVY RAINFALL. EMERGENCY MANAGERS AND SPOTTER GROUPS IN THE SLIGHT RISK AREA SHOULD BE PREPARED FOR POSSIBLE ACTIVATION THIS AFTERNOON... AND CONTINUING AT LEAST THROUGH LATE EVENING. MILLER
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.