Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 77, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 12, 2010, 4:19 PM CDT for Jackson County, Kiowa County, Tillman County, Oklahoma; Wilbarger County, Texas. It was in force for 41 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 12, 2010, 4:19 PM CDT (21:19 UTC)
- Expired
- May 12, 2010, 5:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Jackson County, OK, Kiowa County, OK, Tillman County, OK, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 21 km from the middle of the area, began a volume at 21:22 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 12, 2:41 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.3 hours before the alert went out and 248 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3606 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -83 m²/s²
- 0-3 km storm-relative helicity
- 46 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 May 12, 3:07 PM CDT, 1 hour 12 minutes earlier.
Area forecast discussion, May 12, 3:07 PM CDT, 1 hour 12 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 307 PM CDT WED MAY 12 2010 .DISCUSSION... A COLD FRONT OVER THE FAR NORTHWEST PART OF OUR FORECAST AREA WILL MOVE SOUTHEAST OVERNIGHT... THEN SLOW SIGNIFICANTLY TOMORROW MORNING AS IT MOVES INTO SOUTHEAST OKLAHOMA. THERE IS... OF COURSE... A GOOD CHANCE OF QUITE A FEW SEVERE STORMS THIS EVENING... AND SUBSTANTIAL RAINFALL OVERNIGHT AS MOISTURE CONTINUES TO BE FORCED NORTHWARD OVER THE FRONTAL SURFACE. THE FRONT WILL REMAIN IN THE GENERAL VICINITY OF THE SOUTHEAST PART OF OUR FORECAST AREA INTO THE WEEKEND... SO RAIN CHANCES WILL REMAIN FAIRLY HIGH... AND THE HIGHEST CHANCES WILL BE MOSTLY ACROSS THE SOUTHEAST 2/3 OR SO OF OUR AREA... WITH SOME DAY-TO-DAY VARIATIONS. RAIN CHANCES SLOWLY DECREASE INTO EARLY NEXT WEEK AS THE FORCING WEAKENS. HIGH PRESSURE MAY BE FORCEFUL ENOUGH TO SHUT OFF THE RAIN BY MID- WEEK. TEMPERATURES WILL DROP SIGNIFICANTLY WITH THE PASSAGE OF THE COLD FRONT TONIGHT AND TOMORROW. THE EXPECTED RAIN BAND ALONG/NORTHWEST OF THE FRONT WILL FURTHER COOL TEMPERATURES TOMORROW. AS A RESULT... THURSDAY WILL BE A CHILLY DAMP DAY FOR THE MOST PART ACROSS ABOUT THE SOUTHEAST HALF OF OUR AREA. RELATIVELY COOL DAYTIME TEMPERATURES WILL PERSIST INTO THE WEEKEND AS CLOUD COVER REMAINS THICK OVERHEAD. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 54 67 55 74 / 60 60 30 40 HOBART OK 47 69 53 71 / 50 40 30 50 WICHITA FALLS TX 59 70 59 75 / 50 60 60 60 GAGE OK 43 70 42 67 / 30 20 10 50 PONCA CITY OK 50 66 49 74 / 60 60 20 20 DURANT OK 69 74 61 78 / 40 60 60 60 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 25/23
Hazardous weather outlook, May 12, 12:00 PM CDT, 4 hours 19 minutes before
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Special weather statement, May 12, 1:45 PM CDT, 2 hours 34 minutes before
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</html>Special weather statement, May 12, 2:00 PM CDT, 2 hours 19 minutes before
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</html>Special weather statement, May 12, 2:21 PM CDT, 1 hour 58 minutes before
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</html>Special weather statement, May 12, 4:00 PM CDT, 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 400 PM CDT WED MAY 12 2010 OKZ036-037-TXZ083-085-122130- JACKSON OK-TILLMAN OK-HARDEMAN TX-WILBARGER TX- 400 PM CDT WED MAY 12 2010 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR JACKSON...TILLMAN AND FAR NORTHERN WILBARGER COUNTIES. AT 400 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 16 MILES SOUTHWEST OF ODELL...MOVING NORTH AT 50 MPH ANOTHER SEVERE THUNDERSTORM WAS LOCATED SOUTH OF LOCKETT. MONITOR THE SITUATION CLOSELY. BE READY TO ACT QUICKLY IF A WARNING IS ISSUED OR STORMS THREATEN YOU. LAT...LON 3472 9956 3447 9866 3420 9894 3440 9963
Local storm report, May 12, 4:06 PM CDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
406 PM CDT WED MAY 12 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0404 PM HAIL CHILLICOTHE 34.26N 99.51W
05/12/2010 E1.00 INCH HARDEMAN TX EMERGENCY MNGR
&&
JB/AGThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 7:47 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis, Woodward | 58 min |
| May 11, 8:21 PM CDT | Tornado Warning | OUN | Woodward | 39 min |
| May 11, 8:58 PM CDT | Tornado Warning | OUN | Woodward | 35 min |
| May 12, 3:00 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 60 min |
| May 12, 3:52 PM CDT | Severe Thunderstorm Warning | OUN | Woods, Woodward | 53 min |
| May 12, 4:08 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 52 min |
| May 12, 4:46 PM CDT | Severe Thunderstorm Warning | OUN | Ellis | 59 min |
| May 12, 4:53 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Kiowa, Washita | 17 min |
| May 12, 5:00 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods, Woodward | 45 min |
| May 12, 5:09 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Roger Mills | 66 min |
| May 12, 5:42 PM CDT | Tornado Warning | OUN | Beckham, Roger Mills | 48 min |
| May 12, 5:46 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Woods, Woodward | 59 min |
| May 12, 6:02 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Harmon | 43 min |
| May 12, 6:12 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Greer | 48 min |
| May 12, 6:19 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Roger Mills | 56 min |
| May 12, 6:23 PM CDT | Tornado Warning | OUN | Beckham, Greer, Harmon | 52 min |
| May 12, 6:23 PM CDT | Tornado Warning | OUN | Roger Mills | 37 min |
| May 12, 6:57 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 44 min |
| May 12, 6:57 PM CDT | Tornado Warning | OUN | Beckham, Greer, Harmon | 48 min |
| May 12, 3:23 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Hardeman, Knox, Wilbarger | 52 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2010Severe Thunderstorm Warnings in Texas, 2010Every severe thunderstorm warning in 2010
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.