Alert archive / Oklahoma / Flash Flood Warnings in 1993
Flash Flood Warning 11, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at May 8, 1993, 9:15 AM CDT for Beckham County, Greer County, Kiowa County, Oklahoma. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 8, 1993, 9:15 AM CDT (14:15 UTC)
- Expired
- May 8, 1993, 1:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Beckham County, OK, Greer County, OK, Kiowa County, OK
The radar
The Altus AFB radar (KFDR), 85 km from the middle of the area, began a volume at 14:18 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, 2.3 hours before the alert went out and 184 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
- 1606 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 601 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 5.9
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 flash flood 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 flash flood warning went out at May 8, 5:18 AM CDT, 3 hours 57 minutes earlier.
Area forecast discussion, May 8, 5:18 AM CDT, 3 hours 57 minutes before
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</html>In the hours before
Special weather statement, May 8, 6:56 AM CDT, 2 hours 19 minutes before
OKZ004>021-TXZ076-TXZ077-081800- THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 655 AM CDT SAT MAY 8 1993 SEVERE THUNDERSTORM WATCH NUMBER 226 IS IN EFFECT UNTIL NOON FOR MUCH OF WESTERN AND CENTRAL OKLAHOMA AND THE WESTERN PART OF NORTH TEXAS. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT ACROSS WESTERN AND CENTRAL OKLAHOMA AND THE WESTERN PART OF NORTH TEXAS. THE GREATEST THREAT OF SEVERE THUNDERSTORMS IS WEST OF A LINE FROM PONCA CITY TO ARDMORE...INCLUDING THE CITIES OF ENID...OKLAHOMA CITY...WICHITA FALLS...LAWTON...WOODWARD...AND ALTUS. THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT OVER SOUTHEASTERN OKLAHOMA EAST OF THE MODERATE RISK AREA. VERY MOIST AND UNSTABLE AIR WILL CONTINUE OVER MOST OF OKLAHOMA AND NORTH TEXAS TODAY. THUNDERSTORMS WHICH DEVELOPED OVERNIGHT IN THE TEXAS PANHANDLE IN ADVANCE OF AN UPPER LEVEL TROUGH WILL CONTINUE MOVING EASTWARD ACROSS CENTRAL OKLAHOMA AND THE WESTERN PART OF NORTH TEXAS. LOCALLY HEAVY RAINFALL...GUSTY WINDS...AND HAIL UP TO 1 INCH IN DIAMETER MAY ACCOMPANY THE THUNDERSTORMS DURING THE EARLY MORNING HOURS. THE THUNDERSTORMS GRADUALLY WILL WEAKEN DURING THE MORNING. A PACIFIC COLD FRONT EXTENDED FROM CENTRAL NEBRASKA ACROSS THE EASTERN OKLAHOMA PANHANDLE TO EASTERN NEW MEXICO ...AND A DRYLINE EXTENDED SOUTHWARD FROM SOUTHWESTERN KANSAS ACROSS THE EASTERN TEXAS PANHANDLE TO THE SOUTHEASTERN CORNER OF NEW MEXICO EARLY THIS MORNING. A VIGOROUS UPPER LEVEL TROUGH WILL DIG SOUTHEASTWARD FROM SOUTHERN IDAHO TO A LINE FROM CENTRAL COLORADO TO SOUTHWESTERN NEW MEXICO BY EARLY THIS EVENING. THE DRYLINE OVER THE TEXAS PANHANDLE WILL ADVANCE INTO WESTERN OKLAHOMA AND THE WESTERN PART OF NORTH TEXAS LATE THIS MORNING...AND THUNDERSTORMS ARE LIKELY TO REDEVELOP ALONG THE DRYLINE DURING THE AFTERNOON. WIDESPREAD THUNDERSTORM ACTIVITY OVERNIGHT HAS MIXED THE ATMOSPHERE AND HAS REDUCED INSTABILITY SOMEWHAT...AND THE POTENTIAL FOR A MAJOR SEVERE WEATHER OUTBREAK HAS LESSENED. HOWEVER...SOME OF THE THUNDERSTORMS LIKELY WILL BECOME SEVERE THIS AFTERNOON AND TONIGHT WITH LARGE HAIL AND A FEW TORNADOES POSSIBLE. OUTFLOW FROM THE THUNDERSTORMS MOVING THROUGH WESTERN OKLAHOMA AND NORTH TEXAS EARLY THIS MORNING WILL ACT AS A FOCUSING MECHANISM FOR THUNDERSTORM DEVELOPMENT THIS AFTERNOON ACROSS CENTRAL AND SOUTHERN OKLAHOMA. VERY UNSTABLE AIR AND STRONG WINDS IN THE MID LEVELS OF THE ATMOSPHERE SUGGEST THAT THESE THUNDERSTORMS ALSO MAY BECOME SEVERE. THE UPPER LEVEL WIND FIELD IS FAVORABLE FOR TORNADO DEVELOPMENT WITH THESE THUNDERSTORMS. THE SEVERE WEATHER THREAT GRADUALLY WILL SHIFT EASTWARD TONIGHT. HEAVY RAINFALL AND FLOODING IS POSSIBLE...ESPECIALLY ACROSS CENTRAL AND NORTHERN OKLAHOMA AS STRONG WINDS CONTINUE TO CARRY VERY MOIST AIR NORTHWARD INTO THE THUNDERSTORM COMPLEX DURING THE NIGHTTIME HOURS. STORM SPOTTERS SHOULD BE PREPARED FOR REACTIVATION LATER TODAY.$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:02 PM CDT | Tornado Warning | OUN | Greer, Harmon | 43 min |
| May 7, 7:05 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 40 min |
| May 7, 7:24 PM CDT | Tornado Warning | OUN | Beckham | 51 min |
| May 7, 7:37 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 38 min |
| May 7, 7:54 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Washita | 51 min |
| May 7, 8:13 PM CDT | Tornado Warning | OUN | Beckham | 32 min |
| May 7, 8:19 PM CDT | Severe Thunderstorm Warning | OUN | Harmon | 41 min |
| May 7, 8:23 PM CDT | Flash Flood Warning | OUN | Ellis | 3 hr |
| May 7, 8:38 PM CDT | Severe Thunderstorm Warning | OUN | Caddo | 52 min |
| May 7, 8:39 PM CDT | Tornado Warning | OUN | Blaine, Dewey | 36 min |
| May 7, 9:39 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 51 min |
| May 7, 9:43 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian | 47 min |
| May 7, 9:49 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche | 41 min |
| May 7, 9:58 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Kay, Noble | 47 min |
| May 7, 10:28 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 47 min |
| May 7, 10:42 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 33 min |
| May 7, 10:50 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Logan, Oklahoma | 40 min |
| May 7, 10:50 PM CDT | Severe Thunderstorm Warning | OUN | McClain | 40 min |
| May 7, 11:15 PM CDT | Flash Flood Warning | OUN | Kay | 3 hr |
| May 7, 11:21 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Payne | 54 min |
| May 7, 11:30 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Oklahoma | 45 min |
| May 8, 12:46 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 44 min |
| May 8, 1:08 AM CDT | Severe Thunderstorm Warning | OUN | Garfield, Grant | 52 min |
| May 8, 3:16 AM CDT | Severe Thunderstorm Warning | OUN | Roger Mills | 44 min |
| May 8, 5:06 AM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Oklahoma | 39 min |
| May 8, 5:22 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 53 min |
| May 8, 7:01 AM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson | 44 min |
| May 8, 9:15 AM CDT | Flash Flood Warning | OUN | Caddo, Washita | 4 hr |
| May 8, 12:55 PM CDT | Flash Flood Warning | OUN | Caddo, Kiowa, Washita | 4 hr |
| May 8, 1:15 PM CDT | Flash Flood Warning | OUN | Blaine, Canadian, Kingfisher | 3 hr |
| May 8, 1:58 PM CDT | Tornado Warning | OUN | Grady | 32 min |
| May 8, 2:27 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 48 min |
| May 8, 2:37 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson, Kiowa | 53 min |
| May 8, 2:50 PM CDT | Flash Flood Warning | OUN | Cleveland, Grady, McClain | 3 hr |
| May 8, 2:50 PM CDT | Flash Flood Warning | OUN | Oklahoma | 3 hr |
| May 8, 2:50 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 40 min |
| May 8, 3:15 PM CDT | Flash Flood Warning | OUN | Logan, Payne | 3 hr |
| May 8, 3:28 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa | 62 min |
| May 8, 3:34 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 56 min |
| May 8, 3:51 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, McClain | 54 min |
| May 8, 3:51 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 54 min |
| May 8, 3:57 PM CDT | Severe Thunderstorm Warning | OUN | Cotton, Tillman | 48 min |
| May 8, 4:43 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Grady, McClain | 62 min |
| May 8, 4:43 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 62 min |
| May 8, 4:45 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton | 45 min |
| May 8, 5:01 PM CDT | Severe Thunderstorm Warning | OUN | Stephens | 59 min |
| May 8, 5:05 PM CDT | Tornado Warning | OUN | Cotton | 25 min |
| May 8, 5:08 PM CDT | Tornado Warning | OUN | Jefferson | 67 min |
| May 8, 5:13 PM CDT | Tornado Warning | OUN | Stephens | 62 min |
| May 8, 5:15 PM CDT | Flash Flood Warning | OUN | Kingfisher | 3 hr |
| May 8, 5:51 PM CDT | Tornado Warning | OUN | Grady | 39 min |
| May 8, 5:55 PM CDT | Flash Flood Warning | OUN | Cleveland, McClain, Oklahoma | 3 hr |
| May 8, 6:06 PM CDT | Tornado Warning | OUN | Jefferson | 39 min |
| May 8, 6:14 PM CDT | Flash Flood Warning | OUN | Lincoln, Payne | 2 hr |
| May 8, 6:16 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 44 min |
| May 8, 6:24 PM CDT | Flash Flood Warning | OUN | Grady | 2 hr |
| May 8, 6:35 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, McClain | 40 min |
| May 8, 6:42 PM CDT | Tornado Warning | OUN | Jefferson | 63 min |
| May 8, 6:48 PM CDT | Severe Thunderstorm Warning | OUN | Carter | 42 min |
| May 8, 6:53 PM CDT | Tornado Warning | OUN | Carter | 37 min |
| May 7, 7:45 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 45 min |
| May 8, 3:18 PM CDT | Tornado Warning | OUN | Wilbarger | 42 min |
| May 8, 3:28 PM CDT | Tornado Warning | OUN | Archer | 47 min |
| May 8, 3:36 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 39 min |
| May 8, 4:17 PM CDT | Tornado Warning | OUN | Archer, Wichita | 28 min |
| May 8, 4:22 PM CDT | Severe Thunderstorm Warning | OUN | Baylor | 53 min |
| May 8, 6:58 PM CDT | Flash Flood Warning | OUN | Archer, Clay | 3 hr |
| May 8, 6:58 PM CDT | Flash Flood Warning | OUN | Baylor | 3 hr |
Nearby
Flash Flood Warnings in Oklahoma, 1993Every flash flood warning in 1993
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.