Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 287, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 17, 2008, 6:52 PM CDT for 4 counties in Oklahoma. It was in force for 23 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
- Apr 17, 2008, 6:52 PM CDT (23:52 UTC)
- Expired
- Apr 17, 2008, 7:15 PM CDT
- In force
- 23 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Cleveland County, OK, Garvin County, OK, McClain County, OK, Pottawatomie County, OK
The radar
The Norman radar (KTLX), 34 km from the middle of the area, began a volume at 23:52 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 |
|---|---|---|---|
| Apr 17, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 11.9 hours before the alert went out and 178 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
- 11 J/kg
- Mixed-layer CIN
- -530 J/kg
- Mixed-layer LCL
- 752 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 336 m²/s²
- 0-3 km storm-relative helicity
- 481 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 Apr 17, 3:17 PM CDT, 3 hours 35 minutes earlier.
Area forecast discussion, Apr 17, 3:17 PM CDT, 3 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 317 PM CDT THU APR 17 2008 .DISCUSSION... STRONG STORM SYSTEM WILL WORK ITS WAY EAST ACROSS THE AREA TONIGHT WITH ASSOC SFC COLD FRONT... WHICH IS FAIRLY STRONG ONE FOR MID APRIL. FRIDAY WILL BE DRY AND COOLER WITH LIGHTER WINDS. HOWEVER... WINDS KICK BACK IN OVER THE WEEKEND AS ANOTHER STRONG STORM MOVES ON-SHORE OUT WEST. ALTHOUGH CURRENT FRONT DOES APPEAR TO MOVE INTO NORTHERN GULF LATE FRI... MOISTURE SHOULD RECOVER AND MOVE BACK NORTH LATE IN THE WEEKEND INTO EARLY NEXT WEEK BEFORE NEXT STORM MOVES OUT INTO THE PLAINS. SFC FRONT WILL MOVE INTO SOUTHERN PLAINS AND THEN BECOME STATIONARY OVER THE AREA WITH SEVERAL DAYS OF POTENTIAL PRECIP ACROSS PARTS OF THE AREA. BOTH SEVERE WX AND HEAVY RAIN POTENTIAL WILL EXIST THROUGH MUCH OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 71 43 66 42 / 50 50 0 0 HOBART OK 61 41 68 42 / 20 30 0 0 WICHITA FALLS TX 74 46 71 47 / 30 40 0 0 GAGE OK 48 37 69 38 / 50 20 0 0 PONCA CITY OK 65 41 61 41 / 60 60 10 10 DURANT OK 73 50 65 48 / 40 90 20 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 06/30
Hazardous weather outlook, Apr 17, 11:50 AM CDT, 7 hours 2 minutes before
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Special weather statement, Apr 17, 5:43 PM CDT, 1 hour 9 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 |
|---|---|---|---|---|
| Apr 17, 5:51 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Lincoln, Oklahoma, Pottawatomie | 39 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2008Every severe thunderstorm warning in 2008
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.