Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 126, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 5, 2001, 6:42 PM CDT for Blaine County, Kingfisher County, Oklahoma. It was in force for 33 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 5, 2001, 6:42 PM CDT (23:42 UTC)
- Expired
- May 5, 2001, 7:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Blaine County, OK, Kingfisher County, OK
The radar
The Vance AFB radar (KVNX), 93 km from the middle of the area, began a volume at 23:44 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 5, 3:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 11.7 hours before the alert went out and 101 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
- 12 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 464 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 5, 2:40 PM CDT, 4 hours 2 minutes earlier.
Area forecast discussion, May 5, 2:40 PM CDT, 4 hours 2 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 240 PM CDT SAT MAY 5 2001 THE UPPER SYSTEM EXPECTED TO INITIATE SEVERE STORMS OVER NORTH TX AND OK TONIGHT WAS MOVING EAST THROUGH NORTHERN NM EARLY THIS AFTERNOON. COORDINATION WITH THE HYDROLOGIST, RECENT HEAVY RAINFALL, AND THUNDERSTORMS EXPECTED TONIGHT HAVE RESULTED IN A FLASH FLOOD WATCH FOR PART OF SOUTHWEST OK TONIGHT. REFER TO THE NWS NORMAN HAZARDOUS WEATHER OUTLOOK FOR DETAILS ON TONIGHTS EXPECTED WEATHER. BY MID-DAY SUNDAY THE DRYLINE ASSOCIATED WITH THIS UPPER SYSTEM IS EXPECTED BE MOVING THROUGH THE CENTRAL PART OF THE STATE WITH THE FRONT ACROSS NORTHWEST OK. THUNDERSTORMS WILL REMAIN IN THE FORECAST SUNDAY AFTERNOON AND EVENING IN SOUTH CENTRAL AND SOUTHEAST OK. AS THE COLD FRONT IS NOT EXPECTED TO MOVE VERY FAR SOUTH OF SOUTHEAST OK, A CHANCE OF SHOWERS AND STORMS WILL REMAIN IN THE FORECAST THERE THROUGH MONDAY. A FAST-MOVING MID LEVEL WAVE TRAVELING ACROSS THE NORTHERN PLAINS MAY HELP IN INITIATING SHOWERS AND STORMS NEAR THIS SURFACE FRONT MONDAY. COOLER AND DRIER AIR WILL MOVE ACROSS OK MONDAY AND MONDAY NIGHT, LEADING TO OVERNIGHT TEMPERATURES SLIGHTLY BELOW NORMALS MONDAY AND TUESDAY MORNINGS. MID-LEVEL MOISTURE ISNT EXPECTED TO GO VERY FAR AND SURFACE MOISTURE WILL BE IN PLACE THE SECOND HALF OF THE WEEK, BUT A BUILDING UPPER HIGH OVER THE SOUTHWEST U.S. SHOULD DIMINISH THE CHANCE FOR RAIN AT LEAST FOR TUESDAY AND WEDNESDAY. BY THURSDAY, THIS RIDGE IS FORECAST TO FLATTEN ALLOWING MID-LEVEL NORTHWEST FLOW TO SET UP ACROSS THE NORTHEAST HALF OF OK. A CHANCE FOR SHOWERS AND STORMS RETURNS TO THE FORECAST THE END OF THE WEEK. FCSTID = 9 OKC 61 74 53 72 / 100 20 0 0 HBR 57 73 51 73 / 100 0 0 0 SPS 59 76 55 74 / 100 0 0 0 GAG 53 70 44 71 / 60 0 0 0 PNC 59 72 52 70 / 80 0 0 0 DUA 63 75 59 74 / 80 60 20 20 .OUN... OK...FLASH FLOOD WATCH TONIGHT ZONES 037-038-044. TX...FLASH FLOOD WATCH TOINGHT ZONES 085-086.
In the hours before
Special weather statement, May 5, 1:05 PM CDT, 5 hours 37 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 7:13 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Stephens | 47 min |
| May 4, 7:22 PM CDT | Tornado Warning | OUN | Jefferson | 23 min |
| May 4, 7:24 PM CDT | Tornado Warning | OUN | Grady | 36 min |
| May 4, 7:28 PM CDT | Tornado Warning | OUN | McClain | 32 min |
| May 4, 7:31 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Love | 59 min |
| May 4, 7:49 PM CDT | Tornado Warning | OUN | Cleveland, Oklahoma | 26 min |
| May 4, 7:55 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Murray | 65 min |
| May 4, 8:10 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Oklahoma | 35 min |
| May 4, 8:22 PM CDT | Severe Thunderstorm Warning | OUN | Marshall | 53 min |
| May 4, 8:29 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 46 min |
| May 4, 8:39 PM CDT | Severe Thunderstorm Warning | OUN | Pontotoc | 66 min |
| May 4, 10:37 PM CDT | Severe Thunderstorm Warning | OUN | Bryan, Johnston | 38 min |
| May 4, 10:50 PM CDT | Severe Thunderstorm Warning | OUN | Atoka | 55 min |
| May 4, 11:15 PM CDT | Severe Thunderstorm Warning | OUN | Coal | 45 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.