Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 69, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 10, 2010, 9:43 PM CDT for Bryan County, Oklahoma. It was in force for 32 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 10, 2010, 9:43 PM CDT (02:43 UTC)
- Expired
- May 10, 2010, 10:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
County Bryan County, OK
The radar
The Norman radar (KTLX), 179 km from the middle of the area, began a volume at 02:42 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 10, 5:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 2.7 hours before the alert went out and 158 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
- 2602 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 1245 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 255 m²/s²
- 0-3 km storm-relative helicity
- 396 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 10.1
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 10, 9:17 PM CDT, 26 minutes earlier.
Area forecast discussion, May 10, 9:17 PM CDT, 26 minutes before
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</html>Hazardous weather outlook, May 10, 8:51 PM CDT, 52 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
851 PM CDT MON MAY 10 2010
OKZ004>048-050>052-TXZ083>090-111000-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
851 PM CDT MON MAY 10 2010
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...REST OF TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS SOUTHEAST OF A LINE
FROM CALVIN AND ADA... TO ARDMORE OKLAHOMA... TO HENRIETTA TEXAS
THIS EVENING.
TIMING...
MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE THROUGH
MIDNIGHT.
IMPACTS...
THESE STORMS WILL ALSO HAVE THE POTENTIAL TO PRODUCE DAMAGING HAIL
TO THE SIZE OF BASEBALLS AND DAMAGING WIND GUSTS. TORNADOES WILL
ALSO BE POSSIBLE.
RECOMMENDED ACTIONS...
ALL PERSONS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND HAVE A PLAN OF ACTION IN THE EVENT A WARNING IS
ISSUED FOR YOUR LOCATION. STORMS WILL DEVELOP AND MOVE QUICKLY SO
ADVANCE PLANNING IS ESPECIALLY IMPORTANT.
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS TO
CONTINUE THROUGH THIS EVENING.
DISCUSSION...
THE DRYLINE HAS ADVANCED EASTWARD TO NEAR A STILLWATER TO PAULS
VALLEY TO NEAR ARDMORE OKLAHOMA LINE. THE BOUNDARY HAS SLOWED AND
WILL STALL THIS EVENING. SEVERE STORMS WILL CONTINUE TO DEVELOP
ACROSS PORTIONS OF SOUTH CENTRAL AND SOUTHEAST OKLAHOMA... AND
WESTERN NORTH TEXAS THIS EVENING. LARGE HAIL... STRONG WIND GUSTS...
AND TORNADOES ARE POSSIBLE.
THE OVERALL RISK FOR SEVERE WEATHER WILL GRADUALLY DIMINISH LATE
THIS EVENING. HOWEVER... A FEW THUNDERSTORMS WILL REMAIN POSSIBLE IN
SOUTH CENTRAL AND SOUTHEAST OKLAHOMA OVERNIGHT.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY MAY 11.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR..100 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...
THUNDERSTORM OUTLOOK...
THE WEATHER SYSTEM ARRIVING MONDAY WILL LEAVE A FRONTAL BOUNDARY
STALLED ACROSS THE SOUTHERN PLAINS. FROM MID TO LATE WEEK...
ADDITIONAL UPPER-LEVEL DISTURBANCES WILL INTERACT WITH THE
FRONT...MAINTAINING A CHANCE OF SEVERE STORMS AND AN INCREASING
CHANCE OF HEAVY RAINFALL ACCUMULATIONS.
OTHER HAZARDOUS WEATHER...
NONE.In the hours before
Local storm report, May 10, 8:24 PM CDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
824 PM CDT MON MAY 10 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0815 PM HAIL 5 S FITTSTOWN 34.55N 96.63W
05/10/2010 E1.00 INCH PONTOTOC OK EMERGENCY MNGR
&&
RILEYLocal storm report, May 10, 8:30 PM CDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
830 PM CDT MON MAY 10 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0810 PM TORNADO 3 S MILL CREEK 34.36N 96.82W
05/10/2010 JOHNSTON OK EMERGENCY MNGR
&&
RILEYLocal storm report, May 10, 8:52 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
852 PM CDT MON MAY 10 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0850 PM TORNADO 3 S COLEMAN 34.23N 96.42W
05/10/2010 JOHNSTON OK EMERGENCY MNGR
&&
RILEYLocal storm report, May 10, 9:01 PM CDT, 42 minutes before
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</html>Local storm report, May 10, 9:04 PM CDT, 39 minutes before
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</html>Local storm report, May 10, 9:14 PM CDT, 29 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 10, 7:00 PM CDT | Tornado Warning | OUN | Atoka, Bryan, Johnston, Marshall | 50 min |
| May 10, 7:06 PM CDT | Tornado Warning | OUN | Bryan, Marshall | 54 min |
| May 10, 7:13 PM CDT | Tornado Warning | OUN | Garvin, McClain, Murray, Pontotoc | 62 min |
| May 10, 7:25 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, McClain, Pontotoc, Pottawatomie, Seminole | 50 min |
| May 10, 7:26 PM CDT | Tornado Warning | OUN | Carter, Garvin, Johnston, Murray, Pontotoc | 49 min |
| May 10, 7:45 PM CDT | Tornado Warning | OUN | Hughes, Pontotoc, Seminole | 45 min |
| May 10, 7:53 PM CDT | Tornado Warning | OUN | Bryan | 67 min |
| May 10, 8:04 PM CDT | Tornado Warning | OUN | Atoka, Bryan, Carter, Coal, Johnston, Marshall and 1 more | 56 min |
| May 10, 8:05 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Jefferson, Johnston, Love, Marshall | 55 min |
| May 10, 8:09 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Hughes, Johnston, Pontotoc | 66 min |
| May 10, 8:17 PM CDT | Tornado Warning | OUN | Carter, Johnston, Love, Marshall | 43 min |
| May 10, 8:54 PM CDT | Tornado Warning | OUN | Atoka, Bryan | 51 min |
| May 10, 9:00 PM CDT | Severe Thunderstorm Warning | OUN | Bryan, Love, Marshall | 60 min |
| May 10, 9:59 PM CDT | Severe Thunderstorm Warning | OUN | Bryan | 48 min |
| May 11, 5:52 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Washita | 24 min |
| May 10, 8:35 PM CDT | Tornado Warning | OUN | Clay | 40 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.