Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 736, NWS Norman, OK

August 25, 2016Payne County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 25, 2016, 3:39 PM CDT for Payne County, Oklahoma. It was in force for 36 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 25, 2016, 3:39 PM CDT (20:39 UTC)
Expired: Aug 25, 2016, 4:15 PM CDT
In force: 36 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Payne County, OK

The radar

The Norman radar (KTLX), 101 km from the middle of the area, began a volume at 20:40 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 25, 3:27 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.7 hours before the alert went out and 117 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 649 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1204 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

136 
WUUS54 KOUN 252039
SVROUN
OKC119-252115-
/O.NEW.KOUN.SV.W.0736.160825T2039Z-160825T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
339 PM CDT THU AUG 25 2016

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PAYNE COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 415 PM CDT

* AT 338 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
  GLENCOE...MOVING NORTHEAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  INGALLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3622 9682 3616 9682 3616 9676 3612 9672
      3607 9689 3610 9694 3614 9694 3625 9686
      3625 9684
TIME...MOT...LOC 2038Z 232DEG 15KT 3613 9689 

HAIL...0.75IN
WIND...60MPH
 
$$

KURTZ

1 follow-up statement

582 
WWUS54 KOUN 252109
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
409 PM CDT THU AUG 25 2016

OKC119-252118-
/O.EXP.KOUN.SV.W.0736.000000T0000Z-160825T2115Z/
PAYNE OK-
409 PM CDT THU AUG 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PAYNE COUNTY WILL
EXPIRE AT 415 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
EASTERN PAYNE COUNTY.

LAT...LON 3622 9682 3616 9682 3616 9676 3612 9672
      3607 9689 3610 9694 3614 9694 3625 9686
      3625 9684
TIME...MOT...LOC 2107Z 232DEG 15KT 3613 9689 

$$

KURTZ

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 Aug 25, 2:48 PM CDT, 51 minutes earlier.

Area forecast discussion, Aug 25, 2:48 PM CDT, 51 minutes before

Area Forecast Discussion
National Weather Service Norman OK
248 PM CDT THU AUG 25 2016

.DISCUSSION...
A stalled front from west-central to northeast Oklahoma will be
the primary focus for convection this afternoon, this evening, and
overnight. We already have echoes on area radars, and these echoes
are all currently south of the front. This convection will likely
remain isolated and mostly non-severe. The more robust convection
is expected to form more like the storms that are now over the
Texas Panhandle, and should hold off until about 4 or 5 pm in our
forecast area.

The storms this evening will likely produce very heavy rain, and
forecast models have consistently shown the rainfall maximum
roughly along a line from Elk City to Enid, where heavy rain has
already fallen during the past few days. Flash flood guidance is
relatively low in this area, so we elected to issue a Flood Watch
this morning (for this evening and overnight). For this forecast
issuance, we will add Beckham and Washita Counties, because of a
strong signal of heavy rain in the short-range models, even
though their flood guidance is higher.

Storms should fill in from southwest/west-central Oklahoma to
north-central/northeast Oklahoma during the evening, then begin to
weaken after midnight. The storms should gradually die off as the
morning progresses on Friday.

After this event, it appears that the majority of rain will come
from isolated or scattered showers and storms occurring with weak
waves aloft, or just localized areas of lift + instability. There
is not much to go on to fine-tune the rain chances beyond tomorrow
morning, so the forecast is essentially what model guidance has
provided.

Otherwise, the forecast is relatively uneventful. Expect seasonal
temperatures, relatively high dew points, and generally light
winds (outside thunderstorms) through the middle of next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  70  90  70  91 /  40  20  10  20
Hobart OK         68  91  70  93 /  50  10  20  20
Wichita Falls TX  71  92  71  93 /  10  20  10  10
Gage OK           64  88  66  92 /  70  30  20  20
Ponca City OK     69  88  70  91 /  60  40  30  20
Durant OK         72  89  71  92 /  10  40  10  30

&&

.OUN Watches/Warnings/Advisories...
OK...Flood Watch through Friday morning for OKZ006>008-011-012-
     014>017-021-022.

TX...None.
&&

04/23

Hazardous weather outlook, Aug 25, 1:01 PM CDT, 2 hours 38 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
101 PM CDT THU AUG 25 2016

OKZ004>048-050>052-TXZ083>090-261230-
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-
101 PM CDT THU AUG 25 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 SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MOST OF
WESTERN AND NORTHERN OKLAHOMA LATE THIS AFTERNOON AND EVENING.

LOCATION...
THE SLIGHT RISK AREA RESIDES NORTH OF A HOLLIS TO BINGER TO
GUTHRIE TO STILLWATER LINE. A MARGINAL RISK AREA SURROUNDS THE
SLIGHT RISK AREA AND EXISTS NORTH OF A LINE FROM NEAR KNOX CITY
TEXAS TO LAWTON OKLAHOMA TO NORMAN TO NEAR STROUD.

TIMING..
THE GREATEST CHANCE FOR SEVERE THUNDERSTORMS TODAY WILL BE
BETWEEN 4 AND 11 PM.

IMPACTS...
THE MAIN HAZARD WILL BE DAMAGING WIND GUSTS UP TO 80 MPH AND
LOCALLY HEAVY RAINFALL. HAIL UP TO THE SIZE OF HALF DOLLARS AND
FREQUENT LIGHTNING WILL ALSO BE POSSIBLE.

DISCUSSION...
ISOLATED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE ACROSS
PORTIONS OF FAR NORTHWESTERN OKLAHOMA AT TIMES BEFORE 5 PM TODAY.
THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE.

AROUND 4 TO 5 PM THIS AFTERNOON... SCATTERED SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG OR NEAR THE FRONTAL
BOUNDARY THAT REMAINS STALLED ACROSS THE PANHANDLES AND WESTERN
AND NORTHERN OKLAHOMA. STORMS WILL MOVE EAST AND NORTHEAST.
STORMS WILL LIKELY FORM INTO ONE OR SEVERAL LINE SEGMENTS... EACH
CAPABLE OF PRODUCING DAMAGING WIND GUSTS. STORMS ARE EXPECTED TO
BEGIN TO WEAKEN AFTER 10 PM THIS EVENING.

.FLASH FLOODING...
THUNDERSTORMS THIS EVENING ARE EXPECTED TO BE EFFICIENT RAIN
PRODUCERS... ESPECIALLY THOSE ROOTED TO THE FRONTAL BOUNDARY OR
VARIOUS OUTFLOW BOUNDARIES. SEVERAL LOCATIONS IN WESTERN AND
NORTHERN OKLAHOMA HAVE EXPERIENCED HEAVY RAINFALL OVER THE PAST
FEW DAYS. ADDITIONAL HEAVY RAINFALL THIS EVENING COULD INCREASE
THE CHANCES FOR FLASH FLOODING. THERE IS A FLOOD WATCH IN EFFECT
FOR PORTIONS OF WESTERN AND NORTHERN OKLAHOMA.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREAS...ESPECIALLY IN NORTHERN OKLAHOMA...SHOULD PREPARE
FOR SEVERE WEATHER OPERATIONS LATE THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

.THUNDERSTORMS...
THERE WILL BE A DAILY CHANCE OF THUNDERSTORMS FRIDAY THROUGH NEXT
WEDNESDAY. A FEW STRONG TO PERHAPS SEVERE STORMS WILL REMAIN
POSSIBLE. THE PRIMARY HAZARDS WITH STORMS WILL BE DAMAGING WIND
GUSTS AND LOCALLY HEAVY RAINFALL THAT COULD LEAD TO FLOODING.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

MBS/KURTZ

In the hours before

Special weather statement, Aug 25, 2:56 PM CDT, 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
256 PM CDT THU AUG 25 2016

OKZ025>029-252030-
OKLAHOMA OK-GRADY OK-LINCOLN OK-MCCLAIN OK-CLEVELAND OK-
256 PM CDT THU AUG 25 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OKLAHOMA...
NORTHEASTERN GRADY...SOUTHWESTERN LINCOLN...NORTHWESTERN MCCLAIN AND
NORTHWESTERN CLEVELAND COUNTIES UNTIL 330 PM CDT...

AT 255 PM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
NEAR MIDWEST CITY TO NEAR NEWCASTLE...MOVING NORTHEAST AT 20 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
EASTERN OKLAHOMA CITY...WESTERN NORMAN...MOORE...MIDWEST CITY...
DEL CITY...NEWCASTLE...CHOCTAW...TUTTLE...HARRAH...SPENCER...JONES...
NICOMA PARK...VALLEY BROOK...STANLEY DRAPER LAKE...
TINKER AIR FORCE BASE...FOREST PARK...
SMITH VILLAGE AND WILL ROGERS AIRPORT.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 113 AND 130.
 INTERSTATE 40 BETWEEN MILE MARKERS 151 AND 166.
 INTERSTATE 44 BETWEEN MILE MARKERS 103 AND 116.
 INTERSTATE 240 BETWEEN MILE MARKERS 1 AND 16.

LAT...LON 3546 9712 3546 9714 3545 9714 3519 9763
      3531 9772 3560 9731 3552 9701
TIME...MOT...LOC 1955Z 234DEG 16KT 3544 9738 3528 9763

KURTZ

Special weather statement, Aug 25, 3:33 PM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
333 PM CDT THU AUG 25 2016

OKZ020-252100-
PAYNE OK-
333 PM CDT THU AUG 25 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PAYNE COUNTY UNTIL
400 PM CDT...

AT 331 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 6 MILES NORTH OF
RIPLEY...MOVING NORTHEAST AT 20 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
INGALLS.

LAT...LON 3616 9682 3616 9676 3610 9677 3606 9693
      3612 9698 3624 9682
TIME...MOT...LOC 2031Z 232DEG 16KT 3611 9692

KURTZ

Special weather statement, Aug 25, 3:38 PM CDT, 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
338 PM CDT THU AUG 25 2016

OKZ014-252100-
ROGER MILLS OK-
338 PM CDT THU AUG 25 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ROGER MILLS COUNTY
UNTIL 400 PM CDT...

AT 337 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
OF SWEETWATER...MOVING NORTH AT 10 MPH.

HAZARDS INCLUDE...
WIND GUSTS OVER 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3571 10000 3564 9975 3544 9985 3543 10000
TIME...MOT...LOC 2037Z 197DEG 8KT 3551 9999

WR

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 7:10 PM CDT	Severe Thunderstorm Warning	OUN	Kay	20 min
Aug 24, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	39 min
Aug 24, 7:42 PM CDT	Special Weather Statement	OUN	Kay	33 min
Aug 24, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	48 min
Aug 24, 7:56 PM CDT	Special Weather Statement	OUN	Garfield	34 min
Aug 24, 8:17 PM CDT	Special Weather Statement	OUN	Kay	28 min
Aug 24, 8:28 PM CDT	Special Weather Statement	OUN	Jackson	47 min
Aug 24, 8:49 PM CDT	Special Weather Statement	OUN	Greer	26 min
Aug 24, 9:04 PM CDT	Special Weather Statement	OUN	Kiowa	26 min
Aug 24, 9:36 PM CDT	Special Weather Statement	OUN	Kay	39 min
Aug 24, 10:15 PM CDT	Areal Flood Advisory	OUN	Kay	2 hr
Aug 24, 10:31 PM CDT	Special Weather Statement	OUN	Kay	29 min
Aug 25, 9:45 AM CDT	Flood Watch	OUN	Alfalfa, Beckham, Blaine, Custer, Dewey, Garfield and 5 more	21 hr
Aug 25, 2:56 PM CDT	Special Weather Statement	OUN	Oklahoma	34 min
Aug 25, 3:19 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Oklahoma	24 min
Aug 25, 3:21 PM CDT	Areal Flood Advisory	OUN	Cleveland, Oklahoma	114 min
Aug 25, 3:33 PM CDT	Special Weather Statement	OUN	Payne	27 min
Aug 25, 3:38 PM CDT	Special Weather Statement	OUN	Roger Mills	22 min
Aug 25, 3:41 PM CDT	Special Weather Statement	OUN	Oklahoma	34 min
Aug 25, 3:44 PM CDT	Special Weather Statement	OUN	Oklahoma	31 min
Aug 25, 3:45 PM CDT	Special Weather Statement	OUN	Oklahoma	30 min
Aug 25, 3:47 PM CDT	Special Weather Statement	OUN	Beckham	28 min
Aug 25, 4:03 PM CDT	Special Weather Statement	OUN	Roger Mills	27 min
Aug 25, 4:07 PM CDT	Severe Thunderstorm Warning	OUN	Payne	22 min
Aug 25, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Roger Mills	47 min
Aug 25, 4:26 PM CDT	Tornado Warning	OUN	Beckham, Custer, Roger Mills	34 min
Aug 25, 4:40 PM CDT	Special Weather Statement	OUN	Harmon	65 min
Aug 25, 4:50 PM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Roger Mills	3 hr
Aug 25, 4:53 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	67 min
Aug 25, 4:54 PM CDT	Special Weather Statement	OUN	Custer	36 min
Aug 25, 4:55 PM CDT	Tornado Warning	OUN	Custer, Dewey	35 min
Aug 25, 4:57 PM CDT	Tornado Warning	OUN	Custer	33 min
Aug 25, 5:03 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	42 min
Aug 25, 5:04 PM CDT	Special Weather Statement	OUN	Blaine	26 min
Aug 25, 5:14 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	46 min
Aug 25, 5:15 PM CDT	Special Weather Statement	OUN	Logan	30 min
Aug 25, 5:21 PM CDT	Special Weather Statement	OUN	Beckham	24 min
Aug 25, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Custer	32 min
Aug 25, 5:30 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	27 min
Aug 25, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Custer	53 min
Aug 25, 5:40 PM CDT	Special Weather Statement	OUN	Blaine	20 min
Aug 25, 5:44 PM CDT	Special Weather Statement	OUN	Logan	16 min
Aug 25, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Major	40 min
Aug 25, 5:57 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	33 min
Aug 25, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	46 min
Aug 25, 6:05 PM CDT	Special Weather Statement	OUN	Beckham	25 min
Aug 25, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	49 min
Aug 25, 6:31 PM CDT	Severe Thunderstorm Warning	OUN	Payne	44 min
Aug 25, 6:34 PM CDT	Special Weather Statement	OUN	Washita	26 min
Aug 25, 6:40 PM CDT	Severe Thunderstorm Warning	OUN	Noble	35 min
Aug 25, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	45 min
Aug 25, 6:55 PM CDT	Special Weather Statement	OUN	Major	35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016 Every severe thunderstorm warning 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.