Alert archive / Oklahoma / Special Weather Statements in 2016
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Aug 7, 2016, 6:40 PM CDT for Dewey County, Oklahoma. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2016, 6:40 PM CDT (23:40 UTC)
- Expired
- Aug 7, 2016, 7:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Norman, OK
County Dewey County, OK
The radar
The Vance AFB radar (KVNX), 113 km from the middle of the area, began a volume at 23:41 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, 11.7 hours before the alert went out and 139 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
- 941 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1606 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 7, 6:16 PM CDT, 24 minutes earlier.
Area forecast discussion, Aug 7, 6:16 PM CDT, 24 minutes before
Area Forecast Discussion
National Weather Service Norman OK
616 PM CDT SUN AUG 7 2016
.DISCUSSION...
Aviation discussion for the 00 UTC TAFs is below.
&&
.AVIATION...
VFR conditions are expected to continue.
Besides near KGAG before 02 UTC, chances for SHRA/TSRA remain too
low to mention.
Areas of MVFR or lower conditions with BR are possible across
northern Oklahoma near KPNC, KWWR, and KGAG 06-18 UTC. Did not
mention due to low confidence of occurrence.
MBS
&&
.PREV DISCUSSION... /issued 254 PM CDT SUN AUG 7 2016/
DISCUSSION...
Scattered to numerous storms expected mainly over northwest and
north-central Oklahoma...north of quasi stationary front. Damaging
wind gusts will be the primary severe weather impact with the
strongest storms through early evening. Heavy rain impacts will
also be monitored over north-central Oklahoma through the evening.
Will spread rain chances over central Oklahoma this evening into
the overnight hours for potential storm development near outflow
boundaries. With the synoptic front slow to exit and residual
outflows tomorrow...will follow model solutions of at least
scattered thunderstorms again Monday afternoon into the evening
hours with higher-end pops from initializations.
Overall decrease in convection chances Tuesday through Thursday
before storm chances increase significantly Thursday night into
next weekend. This will be associated with a more substantial
change in airmass as Northern/Central Plains long wave trough
progresses eastward.
Will not make any changes to going Heat Advisory products.
&&
.OUN Watches/Warnings/Advisories...
OK...Heat Advisory until 7 PM CDT this evening for OKZ027>032-039>043-
045>048-050>052.
Heat Advisory from noon to 7 PM CDT Monday for OKZ031-032-
041>043-046>048-050>052.
TX...None.
&&
03/17/17Hazardous weather outlook, Aug 7, 12:29 PM CDT, 6 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 1229 PM CDT SUN AUG 7 2016 OKZ004>048-050>052-TXZ083>090-081200- 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- 1229 PM CDT SUN AUG 7 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN... WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... .THUNDERSTORMS... THERE IS A MARGINAL RISK OF STRONG TO SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND EVENING. THE MARGINAL RISK COVERS THE NORTHERN HALF OF OKLAHOMA...THE I-40 CORRIDOR TO THE KANSAS BORDER. ISOLATED TO SCATTERED STORMS ARE EXPECTED TO DEVELOP ALONG A SLOWED SURFACE BOUNDARY AS IT PUSHES SOUTHWARD OUT OF KANSAS. THE BEST CHANCE FOR SHOWERS AND STORMS WILL BE IN NORTHERN OKLAHOMA. A FEW STORMS MAY BECOME STRONG TO SEVERE... WITH WINDS GUSTS TO 60 MPH THE PRIMARY HAZARD... ALONG WITH LOCALLY HEAVY RAINFALL... AND FREQUENT LIGHTNING. .HEAT... HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THIS AFTERNOON. HEAT INDEX VALUES EXCEEDING 105 DEGREES WILL BE POSSIBLE IN SOME LOCATIONS. A HEAT ADVISORY IS IN EFFECT FOR PARTS OF CENTRAL... SOUTH CENTRAL... AND SOUTHEAST OKLAHOMA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... .THUNDERSTORMS... SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE EACH DAY FOR AT LEAST PART OF THE AREA THROUGH THE UPCOMING WEEK. THE HIGHEST CHANCES WILL BE MONDAY THEN AGAIN FRIDAY INTO SATURDAY. THE RISK FOR SEVERE WEATHER IS LOW. .HEAT... THE HOT CONDITIONS WILL CONTINUE THIS WEEK WITH TRIPLE DIGIT HEAT INDICES... SOME OF WHICH WILL EXCEED 105 DEGREES.. ACROSS PARTS OF OKLAHOMA AND WESTERN NORTH TEXAS. A HEAT ADVISORY IS IN EFFECT FOR PARTS OF CENTRAL AND SOUTHERN OKLAHOMA MONDAY. GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK. EM/KURTZ
In the hours before
Special weather statement, Aug 7, 3:54 PM CDT, 2 hours 46 minutes before
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</html>Special weather statement, Aug 7, 4:10 PM CDT, 2 hours 30 minutes before
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</html>Special weather statement, Aug 7, 4:53 PM CDT, 1 hour 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 453 PM CDT SUN AUG 7 2016 OKZ011-072230- MAJOR OK- 453 PM CDT SUN AUG 7 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MAJOR COUNTY UNTIL 530 PM CDT... AT 449 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR CLEO SPRINGS... MOVING NORTHEAST AT 5 MPH. HAZARDS INCLUDE... WIND GUSTS OVER 50 MPH... HEAVY RAINFALL RESULTING IN REDUCED VISIBILITY AND PONDING OF WATER... FREQUENT CLOUD TO GROUND LIGHTNING... LOCATIONS IMPACTED INCLUDE... FAIRVIEW...CLEO SPRINGS AND ORIENTA. PRECAUTIONARY/PREPAREDNESS ACTIONS... MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING WEATHER CONDITIONS. && LAT...LON 3628 9842 3631 9855 3646 9842 3646 9820 TIME...MOT...LOC 2149Z 215DEG 4KT 3638 9840 03
Special weather statement, Aug 7, 4:55 PM CDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
455 PM CDT SUN AUG 7 2016
OKZ009-014-072245-
ROGER MILLS OK-ELLIS OK-
455 PM CDT SUN AUG 7 2016
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ROGER MILLS AND SOUTH
CENTRAL ELLIS COUNTIES UNTIL 545 PM CDT...
AT 452 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR ROLL...MOVING
NORTHEAST AT 5 MPH.
HAZARDS INCLUDE...
WIND GUSTS OVER 50 MPH...
HEAVY RAINFALL RESULTING IN REDUCED VISIBILITY AND PONDING OF WATER...
FREQUENT CLOUD TO GROUND LIGHTNING...
LOCATIONS IMPACTED INCLUDE...
REYDON...ROLL...ANGORA...CRAWFORD AND DURHAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME.
&&
LAT...LON 3583 10000 3598 9966 3585 9938 3583 9938
3560 10000
TIME...MOT...LOC 2152Z 215DEG 3KT 3579 9976
03Special weather statement, Aug 7, 5:51 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
551 PM CDT SUN AUG 7 2016
OKZ014-072345-
ROGER MILLS OK-
551 PM CDT SUN AUG 7 2016
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN ROGER MILLS COUNTY UNTIL
645 PM CDT...
AT 549 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR REYDON...MOVING
NORTHEAST AT 20 MPH.
HAZARDS INCLUDE...
WIND GUSTS OVER 50 MPH...
HEAVY RAINFALL RESULTING IN REDUCED VISIBILITY AND PONDING OF WATER...
LOCATIONS IMPACTED INCLUDE...
REYDON...ROLL AND CRAWFORD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME.
&&
LAT...LON 3592 9981 3589 9978 3588 9975 3586 9972
3584 9962 3585 9960 3586 9955 3551 9986
3564 10000 3570 10000
TIME...MOT...LOC 2249Z 223DEG 18KT 3567 9989
03Special weather statement, Aug 7, 6:40 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 640 PM CDT SUN AUG 7 2016 OKZ015-016-080030- CUSTER OK-DEWEY OK- 640 PM CDT SUN AUG 7 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CUSTER AND SOUTHEASTERN DEWEY COUNTIES UNTIL 730 PM CDT... AT 637 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES WEST OF FAY... MOVING NORTH AT 15 MPH. HAZARDS INCLUDE... WIND GUSTS OVER 50 MPH... HEAVY RAINFALL RESULTING IN REDUCED VISIBILITY AND PONDING OF WATER... FREQUENT CLOUD TO GROUND LIGHTNING... LOCATIONS IMPACTED INCLUDE... THOMAS...OAKWOOD AND FAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT THIS TIME. && LAT...LON 3574 9863 3574 9884 3601 9888 3601 9864 TIME...MOT...LOC 2337Z 190DEG 13KT 3583 9874 03
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:00 PM CDT | Special Weather Statement | OUN | Bryan | 15 min |
| Aug 6, 8:24 PM CDT | Special Weather Statement | OUN | Marshall | 21 min |
| Aug 6, 8:44 PM CDT | Special Weather Statement | OUN | Marshall | 16 min |
| Aug 7, 3:39 AM CDT | Heat Advisory | OUN | Atoka, Bryan, Carter, Coal, Hughes, Johnston and 7 more | 38 hr |
| Aug 7, 2:19 PM CDT | Special Weather Statement | OUN | Ellis | 26 min |
| Aug 7, 2:48 PM CDT | Special Weather Statement | OUN | Ellis | 27 min |
| Aug 7, 2:53 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Woodward | 52 min |
| Aug 7, 3:16 PM CDT | Special Weather Statement | OUN | Harper | 29 min |
| Aug 7, 3:35 PM CDT | Special Weather Statement | OUN | Ellis | 25 min |
| Aug 7, 3:54 PM CDT | Special Weather Statement | OUN | Harper | 36 min |
| Aug 7, 4:10 PM CDT | Special Weather Statement | OUN | Woodward | 35 min |
| Aug 7, 4:53 PM CDT | Special Weather Statement | OUN | Major | 37 min |
| Aug 7, 4:55 PM CDT | Special Weather Statement | OUN | Roger Mills | 50 min |
| Aug 7, 5:51 PM CDT | Special Weather Statement | OUN | Roger Mills | 54 min |
Nearby
Special Weather Statements in Oklahoma, 2016Every special weather statement in 2016
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.