Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 408, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 2, 2011, 5:01 PM CDT for Kay County, Oklahoma. It was in force for 59 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
- Jul 2, 2011, 5:01 PM CDT (22:01 UTC)
- Expired
- Jul 2, 2011, 6:00 PM CDT
- In force
- 59 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
County Kay County, OK
The radar
The Vance AFB radar (KVNX), 88 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 179 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
- 195 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 2024 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -75 m²/s²
- 0-3 km storm-relative helicity
- -16 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 Jul 2, 1:58 PM CDT, 3 hours 3 minutes earlier.
Area forecast discussion, Jul 2, 1:58 PM CDT, 3 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 158 PM CDT SAT JUL 2 2011 .DISCUSSION... LITTLE CHANGE IS EXPECTED OVER THE NEXT WEEK. THE VERY HOT AIR MASS WILL MAINTAIN ITSELF THROUGH NEXT WEEK. THE ONLY BREAK TO THIS MAY COME WITH A WEAK BOUNDARY FROM THE NORTH ON THURSDAY OR FRIDAY IN NORTHERN OKLAHOMA WHICH WOULD BE OPEN TO PREVAILING WIND FROM THE NORTHWEST. OTHERWISE, THE UPPER RIDE WILL BE A REFLECTION OF THE HEAT. LATE DAY SHOWERS AND A FEW THUNDERSTORMS WILL BE POSSIBLE MOST DAYS IN THE VERY HOT AND MODERATELY HUMID AIR MASS. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 74 99 73 100 / 10 10 10 10 HOBART OK 74 103 72 102 / 10 10 10 10 WICHITA FALLS TX 77 103 74 103 / 10 10 10 10 GAGE OK 70 100 69 101 / 10 10 10 10 PONCA CITY OK 76 99 74 99 / 20 20 10 20 DURANT OK 75 99 75 99 / 10 10 10 20 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 23/09
Hazardous weather outlook, Jul 2, 3:45 PM CDT, 1 hour 16 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
345 PM CDT SAT JUL 2 2011
OKZ004>048-050>052-TXZ083>090-031000-
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-
345 PM CDT SAT JUL 2 2011
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...THIS AFTERNOON AND TONIGHT...
THUNDERSTORM OUTLOOK...
SEVERE THUNDERSTORMS ARE UNLIKELY.
DISCUSSION...
SCATTERED THUNDERSTORMS WILL OCCUR ACROSS NORTHERN AND WESTERN
OKLAHOMA...WITH MORE ISOLATED ACTIVITY POSSIBLE OVER CENTRAL AND
SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. MODEST INSTABILITY AND
WEAK VERTICAL WIND PROFILES WILL LIMIT THE ABILITY OF STORMS TO
ORGANIZE. HOWEVER...A LAYER OF RELATIVELY HOT AND DRY AIR NEAR THE
SURFACE WILL PROVIDE AN ENVIRONMENT THAT COULD RESULT IN STRONG WIND
GUSTS...WITH MANY STORMS CAPABLE OF 30 TO 45 MPH GUSTS. CLOUD TO
GROUND LIGHTNING WILL ALSO BE A CONCERN.
MOST OF THE THUNDERSTORM ACTIVITY WILL END THIS EVENING SHORTLY
AFTER SUNSET. HOWEVER... A SLIGHT CHANCE FOR SHOWERS AND
THUNDERSTORMS WILL REMAIN POSSIBLE OVERNIGHT IN PARTS OF NORTHERN
OKLAHOMA NEAR A FRONT THAT EXTENDS ACROSS PORTIONS OF CENTRAL AND
SOUTHERN KANSAS.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SUNDAY JUL 3.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...20 PERCENT.
OTHER HAZARDOUS WEATHER...
HOT WEATHER WILL CONTINUE TODAY...WITH HEAT INDEX VALUES RANGING
FROM THE UPPER 90S TO 105. THIS WILL CONTINUE TO CAUSE HEAT STRESS
FOR PEOPLE AND ANIMALS...ESPECIALLY DURING THE AFTERNOON.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...
THUNDERSTORM OUTLOOK...
THERE WILL BE A SLIGHT CHANCE OF THUNDERSTORMS OVER PARTS OF
OKLAHOMA ON SUNDAY...MONDAY...AND WEDNESDAY. HOWEVER... ISOLATED
STORMS WILL BE POSSIBLE EVERY AFTERNOON AND EARLY EVENING THROUGH
THE MIDDLE OF NEXT WEEK.
OTHER HAZARDOUS WEATHER...
HOT WEATHER WILL PERSIST THROUGH AT LEAST THE MIDDLE OF NEXT WEEK.
HEAT INDEX VALUES WILL GENERALLY RANGE BETWEEN THE UPPER 90S AND
105. USE CAUTION TO AVOID HEAT STRESS... AND MONITOR INFORMATION
FROM THE NATIONAL WEATHER SERVICE AND PUBLIC OFFICIALS.
EXCEPTIONAL DROUGHT CONDITIONS ACROSS WESTERN OKLAHOMA AND WESTERN
NORTH TEXAS WILL CONTINUE TO ELEVATE THE RISK OF WILDFIRES EACH
AFTERNOON.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5 AM
SUNDAY.In the hours before
Special weather statement, Jul 2, 1:59 PM CDT, 3 hours 2 minutes before
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</html>Special weather statement, Jul 2, 3:44 PM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 344 PM CDT SAT JUL 2 2011 OKZ007-012-022115- GARFIELD OK-GRANT OK- 344 PM CDT SAT JUL 2 2011 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR GARFIELD AND GRANT COUNTIES. AT 344 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH OF GARBER...MOVING NORTH AT 10 MPH. ANOTHER STRONG STORM WAS LOCATED 6 MILES SOUTH OF LAMONT. OTHER STORMS WERE ALSO DEVELOPING IN THE AREA THAT COULD BECOME STRONG. HAZARDS INCLUDE... WIND GUSTS TO 40 MPH... CLOUD TO GROUND LIGHTNING... LAT...LON 3669 9805 3670 9748 3640 9749 3641 9804 MAXWELL
Special weather statement, Jul 2, 4:10 PM CDT, 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 410 PM CDT SAT JUL 2 2011 OKZ006>008-012-013-022130- GARFIELD OK-NOBLE OK-KAY OK-ALFALFA OK-GRANT OK- 410 PM CDT SAT JUL 2 2011 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR ALFALFA...GARFIELD... GRANT...KAY AND NOBLE COUNTIES. AT 407 PM CDT...SCATTERED STRONG THUNDERSTORMS WERE LOCATED OVER NORTH-CENTRAL OKLAHOMA AND EXTREME SOUTHERN KANSAS...VERY LITTLE MOVEMENT WILL OCCUR BUT MOST WILL DRIFT SLOWLY NORTH. THE STRONGEST STORMS WERE LOCATED JUST NORTHWEST OF BURLINGTON...EAST OF RENFROW... AND BETWEEN GARBER AND BILLINGS. ALONG WITH HEAVY RAIN AND CLOUD TO GROUND LIGHTNING...STRONG WIND GUSTS WILL OCCUR. HAZARDS INCLUDE... WIND GUSTS 45 TO 55 MPH... MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING WEATHER CONDITIONS. LAT...LON 3700 9727 3630 9731 3628 9793 3700 9852
Special weather statement, Jul 2, 4:34 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 434 PM CDT SAT JUL 2 2011 OKZ005>008-012-013-022145- GARFIELD OK-NOBLE OK-WOODS OK-KAY OK-ALFALFA OK-GRANT OK- 434 PM CDT SAT JUL 2 2011 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR ALFALFA...GARFIELD... GRANT...KAY...NOBLE AND WOODS COUNTIES. AT 432 PM CDT...SCATTERED STRONG THUNDERSTORMS WERE SEEN ACROSS NORTH-CENTRAL OKLAHOMA...GENERALLY MOVING NORTH AND EAST AT 5 MPH. THE STRONGEST STORMS WERE LOCATED JUST WEST OF BURLINGTON...JUST EAST OF ENID TO NEAR BILLINGS...AND FROM NEAR DEER CREEK TO BRAMAN AND ARKANSAS CITY. HAZARDS INCLUDE... WIND GUSTS TO 50 MPH... FREQUENT CLOUD TO GROUND LIGHTNING... MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING WEATHER CONDITIONS. LAT...LON 3700 9694 3637 9720 3625 9769 3699 9886
Special weather statement, Jul 2, 4:51 PM CDT, 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
451 PM CDT SAT JUL 2 2011
OKZ007-008-012-013-022215-
GARFIELD OK-NOBLE OK-KAY OK-GRANT OK-
451 PM CDT SAT JUL 2 2011
...SIGNIFICANT WEATHER ADVISORY...
THIS SIGNIFICANT WEATHER ADVISORY IS FOR GARFIELD...GRANT...KAY AND
NOBLE COUNTIES.
AT 449 PM CDT...SCATTERED STRONG THUNDERSTORMS WERE LOCATED ACROSS
NORTH-CENTRAL OKLAHOMA...GENERALLY MOVING NORTH AND EAST AT 5 MPH.
THE STRONGEST STORMS WERE NEAR THE KANSAS BORDER NORTH OF BRAMAN TO
NEAR CHILOCCO. OTHER STRONG STORMS WERE LOCATED ON THE EASTERN SIDES
OF ENID OVER TOWARD BILLINGS AND RED ROCK.
HAZARDS INCLUDE...
WIND GUSTS 45 TO 55 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...
MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.
LAT...LON 3669 9701 3670 9704 3669 9706 3663 9705
3626 9729 3655 9770 3700 9753 3700 9682The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:31 PM CDT | Special Weather Statement | OUN | Oklahoma | 29 min |
| Jul 1, 7:33 PM CDT | Special Weather Statement | OUN | Grady | 27 min |
| Jul 2, 1:59 PM CDT | Special Weather Statement | OUN | Alfalfa | 16 min |
| Jul 2, 2:31 PM CDT | Special Weather Statement | OUN | Grant | 29 min |
| Jul 2, 3:44 PM CDT | Special Weather Statement | OUN | Garfield | 31 min |
| Jul 2, 4:10 PM CDT | Special Weather Statement | OUN | Garfield, Grant | 20 min |
| Jul 2, 4:34 PM CDT | Special Weather Statement | OUN | Alfalfa, Garfield, Grant, Kay, Noble | 11 min |
| Jul 2, 4:51 PM CDT | Special Weather Statement | OUN | Kay, Noble | 24 min |
| Jul 2, 5:06 PM CDT | Special Weather Statement | OUN | Garfield | 24 min |
| Jul 2, 5:07 PM CDT | Special Weather Statement | OUN | Stephens | 23 min |
| Jul 2, 5:24 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 39 min |
| Jul 2, 6:04 PM CDT | Special Weather Statement | OUN | Grady | 26 min |
| Jul 2, 6:05 PM CDT | Special Weather Statement | OUN | Harmon | 25 min |
| Jul 2, 6:14 PM CDT | Special Weather Statement | OUN | Johnston | 31 min |
| Jul 2, 6:25 PM CDT | Special Weather Statement | OUN | Johnston | 20 min |
| Jul 2, 6:53 PM CDT | Special Weather Statement | OUN | Harmon | 22 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2011Every severe thunderstorm warning in 2011
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.