Alert archive / Oklahoma / Flash Flood Warnings in 2013

Flash Flood Warning 25, NWS Norman, OK

July 26, 20138 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at Jul 26, 2013, 5:28 AM CDT for 8 counties in Oklahoma. It was in force for 3 hr. 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 26, 2013, 5:28 AM CDT (10:28 UTC)
Expired: Jul 26, 2013, 8:30 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Canadian County, OK, Cleveland County, OK, Grady County, OK, Kingfisher County, OK, Logan County, OK, McClain County, OK, Oklahoma County, OK, Payne County, OK

The radar

The Norman radar (KTLX), 33 km from the middle of the area, began a volume at 10:27 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 00:00Z, 10.5 hours before the alert went out and 37 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: 371 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 1556 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 26, 3:27 AM CDT, 2 hours 1 minute earlier.

Area forecast discussion, Jul 26, 3:27 AM CDT, 2 hours 1 minute before

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Hazardous weather outlook, Jul 26, 4:38 AM CDT, 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
438 AM CDT FRI JUL 26 2013

OKZ004>048-050>052-TXZ083>090-261700-
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-
438 AM CDT FRI JUL 26 2013

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A RISK OF STRONG TO SEVERE THUNDERSTORMS THROUGH NOON
TODAY ACROSS MUCH OF THE AREA...MAINLY EAST OF SEYMOUR TEXAS TO ALTUS
OKLAHOMA...TO WOODWARD TO ALVA OKLAHOMA LINE.

THUNDERSTORM CHANCES WILL CONTINUE BETWEEN NOON AND 10 PM TODAY EAST
EAST OF I-35...BUT THESE STORMS DURING THIS TIME FRAME ARE NOT
EXPECTED TO BE STRONG OR SEVERE.

DISCUSSION...
WIDESPREAD SHOWERS AND STORMS WITH HEAVY RAIN WILL PERSIST THIS MORNING
ESPECIALLY ACROSS CENTRAL AND SOUTHERN OKLAHOMA AS A POTENT LOW PRESSURE
SYSTEM MOVES THROUGH THE REGION. ISOLATED SEVERE STORMS WILL BE
POSSIBLE...BUT WIDESPREAD SEVERE WEATHER IS NOT LIKELY.

SHOWERS AND STORMS WILL END WEST TO EAST LATER THIS MORNING AND AFTERNOON
AS DRIER AIR MOVES IN FROM THE NORTHWEST.

IMPACTS FROM THE STRONGER STORMS...

...VERY HEAVY RAINFALL OF 1 TO 3 INCHES...OR LOCALLY HIGHER AMOUNTS...
LEADING TO DANGEROUS FLASH FLOODING...
...DAMAGING WINDS TO 60 MPH...
...HAIL UP TO HALF DOLLARS...
...FREQUENT CLOUD TO GROUND LIGHTNING...

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SATURDAY JUL 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...50 PERCENT.

OTHER HAZARDOUS WEATHER...
PARTS OF OKLAHOMA HAVE RECEIVED SIGNIFICANT RAINFALL IN THE PAST
SEVERAL DAYS...AND ADDITIONAL HEAVY RAINFALL MAY RESULT IN RAPID
RUNOFF AND FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT. PLEASE
REFER TO THE LATEST VERSION OF THIS PRODUCT FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
AFTER A BREAK ON SATURDAY...THERE WILL BE A CHANCE FOR STORMS AGAIN
FROM SATURDAY NIGHT THROUGH TUESDAY NIGHT...MAINLY ACROSS NORTHERN
OKLAHOMA.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY
NOON TODAY.

MBS/AUSTIN/KURTZ

In the hours before

Special weather statement, Jul 26, 3:18 AM CDT, 2 hours 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
318 AM CDT FRI JUL 26 2013

OKZ038-039-044-260900-
COTTON OK-STEPHENS OK-COMANCHE OK-
318 AM CDT FRI JUL 26 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN COTTON...WESTERN
STEPHENS AND COMANCHE COUNTIES UNTIL 400 AM CDT...

AT 315 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR GERONIMO...
MOVING SOUTHEAST AT 35 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...
NICKEL SIZE HAIL...
VERY HEAVY RAINFALL WHICH MAY LEAD TO FLOODING IN LOCALIZED AREAS...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
LAWTON...WALTERS...TEMPLE...GERONIMO...FORT SILL AND HULEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3455 9863 3470 9834 3448 9800 3422 9828
TIME...MOT...LOC 0815Z 304DEG 30KT 3451 9842

AUSTIN

Local storm report, Jul 26, 3:33 AM CDT, 1 hour 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
333 AM CDT FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0321 AM     TSTM WND GST     LAWTON                  34.60N 98.42W
07/26/2013  M62 MPH          COMANCHE           OK   ASOS

&&

MBS

Special weather statement, Jul 26, 3:35 AM CDT, 1 hour 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
335 AM CDT FRI JUL 26 2013

OKZ016>018-022>025-027-260915-
OKLAHOMA OK-CUSTER OK-KINGFISHER OK-BLAINE OK-WASHITA OK-CADDO OK-
GRADY OK-CANADIAN OK-
335 AM CDT FRI JUL 26 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN OKLAHOMA...EASTERN
CUSTER...SOUTHERN KINGFISHER...SOUTHERN BLAINE...NORTHEASTERN
WASHITA...NORTHERN CADDO...NORTHWESTERN GRADY AND CANADIAN COUNTIES
UNTIL 415 AM CDT...

AT 333 AM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
6 MILES SOUTHEAST OF LOYAL TO 4 MILES NORTHEAST OF GEARY TO 7 MILES
NORTHWEST OF WEATHERFORD TO 6 MILES WEST OF CUSTER CITY...MOVING
SOUTHEAST AT 35 TO 40 MPH.

HAZARDS INCLUDE...
POTENTIALLY SEVERE WINDS GUSTING OVER 55 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
EL RENO...WEATHERFORD...KINGFISHER...YUKON...CONCHO...PIEDMONT...
HINTON...MINCO...UNION CITY...GEARY...THOMAS...OKARCHE...HYDRO...
BINGER...CALUMET...CUSTER CITY...EAKLY...COLONY...LOOKEBA AND
GREENFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3577 9909 3578 9886 3584 9840 3599 9803
      3574 9767 3572 9767 3572 9764 3563 9750
      3532 9786 3525 9834 3535 9875
TIME...MOT...LOC 0833Z 316DEG 28KT 3590 9805 3569 9828 3562 9876 3568
9900

AUSTIN

Local storm report, Jul 26, 4:02 AM CDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
402 AM CDT FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 AM     HAIL             GERONIMO                34.48N 98.38W
07/26/2013  E1.75 INCH       COMANCHE           OK   BROADCAST MEDIA

&&

MBS

Special weather statement, Jul 26, 4:18 AM CDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
418 AM CDT FRI JUL 26 2013

OKZ018-022>025-027>029-035-261000-
OKLAHOMA OK-KIOWA OK-KINGFISHER OK-WASHITA OK-CADDO OK-MCCLAIN OK-
GRADY OK-CLEVELAND OK-CANADIAN OK-
418 AM CDT FRI JUL 26 2013

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN OKLAHOMA...NORTHEASTERN
KIOWA...SOUTHEASTERN KINGFISHER...WASHITA...CADDO...NORTHWESTERN
MCCLAIN...GRADY...NORTHERN CLEVELAND AND CANADIAN COUNTIES UNTIL 500
AM CDT...

AT 414 AM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
4 MILES NORTHWEST OF PIEDMONT TO 3 MILES SOUTH OF EL RENO TO LOOKEBA
TO CLOUD CHIEF TO DILL CITY...MOVING SOUTHEAST AT 35 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 40 MPH...
VERY HEAVY RAINFALL WHICH MAY LEAD TO FLASH FLOODING...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
OKLAHOMA CITY...NORMAN...MIDWEST CITY...MOORE...DEL CITY...EL RENO...
CHICKASHA...YUKON...BETHANY...CONCHO...MUSTANG...THE VILLAGE...WARR
ACRES...ANADARKO...NEWCASTLE...TUTTLE...NICHOLS HILLS...SPENCER...
PIEDMONT AND CORDELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3545 9847 3559 9812 3579 9784 3540 9715
      3512 9749 3499 9787 3485 9863 3485 9879
      3533 9924
TIME...MOT...LOC 0914Z 312DEG 30KT 3567 9783 3548 9797 3535 9834 3525
9881 3529 9912

AUSTIN

Special weather statement, Jul 26, 5:04 AM CDT, 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
504 AM CDT FRI JUL 26 2013

OKZ023-035-038-261045-
KIOWA OK-CADDO OK-COMANCHE OK-
504 AM CDT FRI JUL 26 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KIOWA...SOUTHWESTERN
CADDO AND COMANCHE COUNTIES UNTIL 545 AM CDT...

AT 502 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 6 MILES SOUTH OF
MOUNTAIN VIEW...MOVING SOUTHEAST AT 35 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...
HEAVY RAIN LEADING TO CONTINUING FLOODING IN SATURATED RURAL AND
URBAN AREAS...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
CACHE...ELGIN...MOUNTAIN VIEW...MEDICINE PARK...LAKE ELLSWORTH...
BOONE...MEERS AND LAKE LAWTONKA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3512 9876 3478 9821 3454 9860 3498 9894
TIME...MOT...LOC 1002Z 312DEG 31KT 3501 9877

AUSTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 9:19 PM CDT	Special Weather Statement	OUN	Custer	41 min
Jul 25, 10:45 PM CDT	Special Weather Statement	OUN	Custer	45 min
Jul 25, 10:50 PM CDT	Special Weather Statement	OUN	Woods	25 min
Jul 25, 11:10 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Custer, Washita	3 hr
Jul 25, 11:23 PM CDT	Special Weather Statement	OUN	Custer	22 min
Jul 25, 11:26 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Washita	49 min
Jul 26, 12:16 AM CDT	Special Weather Statement	OUN	Caddo	29 min
Jul 26, 12:27 AM CDT	Areal Flood Advisory	OUN	Caddo, Canadian	3 hr
Jul 26, 12:53 AM CDT	Special Weather Statement	OUN	Kiowa	37 min
Jul 26, 1:09 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche	51 min
Jul 26, 1:11 AM CDT	Severe Thunderstorm Warning	OUN	Kiowa	49 min
Jul 26, 1:13 AM CDT	Special Weather Statement	OUN	Woodward	47 min
Jul 26, 1:39 AM CDT	Special Weather Statement	OUN	Dewey	51 min
Jul 26, 2:03 AM CDT	Areal Flood Advisory	OUN	Caddo, Comanche	3 hr
Jul 26, 2:12 AM CDT	Special Weather Statement	OUN	Comanche	48 min
Jul 26, 2:53 AM CDT	Special Weather Statement	OUN	Blaine, Dewey, Kingfisher	37 min
Jul 26, 3:18 AM CDT	Special Weather Statement	OUN	Cotton	42 min
Jul 26, 3:27 AM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Canadian, Custer, Washita	4 hr
Jul 26, 3:33 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Stephens	42 min
Jul 26, 3:35 AM CDT	Special Weather Statement	OUN	Canadian	40 min
Jul 26, 3:57 AM CDT	Areal Flood Advisory	OUN	Caddo, Comanche, Cotton, Kiowa, Stephens	3 hr
Jul 26, 4:03 AM CDT	Flash Flood Warning	OUN	Comanche, Cotton	3 hr
Jul 26, 4:10 AM CDT	Areal Flood Advisory	OUN	Blaine, Canadian, Custer, Dewey, Garfield, Kingfisher and 1 more	3 hr
Jul 26, 4:13 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	47 min
Jul 26, 4:18 AM CDT	Special Weather Statement	OUN	Caddo, Canadian, Grady, Washita	42 min
Jul 26, 4:54 AM CDT	Areal Flood Advisory	OUN	Caddo, Canadian, Cleveland, Grady, Kingfisher, Logan and 2 more	3 hr
Jul 26, 5:00 AM CDT	Flash Flood Warning	OUN	Cotton, Jefferson, Stephens	3 hr
Jul 26, 5:04 AM CDT	Special Weather Statement	OUN	Comanche	41 min
Jul 26, 5:35 AM CDT	Flash Flood Warning	OUN	Caddo, Comanche, Kiowa	115 min
Jul 26, 5:53 AM CDT	Areal Flood Advisory	OUN	Jefferson	112 min
Jul 26, 6:10 AM CDT	Areal Flood Advisory	OUN	Comanche, Kiowa, Tillman, Washita	2 hr
Jul 26, 6:17 AM CDT	Flash Flood Warning	OUN	Cleveland, Garvin, Grady, McClain	3 hr
Jul 26, 6:54 AM CDT	Flash Flood Warning	OUN	Caddo, Comanche, Cotton, Kiowa, Tillman	3 hr
Jul 26, 7:11 AM CDT	Flash Flood Warning	OUN	Cleveland, Garvin, McClain, Oklahoma, Pontotoc, Pottawatomie and 1 more	3 hr
Jul 26, 7:58 AM CDT	Areal Flood Advisory	OUN	Cotton, Jefferson, Stephens	2 hr
Jul 26, 8:07 AM CDT	River Flood Warning	OUN	Pottawatomie, Seminole	23 hr
Jul 26, 8:08 AM CDT	Areal Flood Warning	OUN	Caddo	112 min
Jul 26, 8:10 AM CDT	River Flood Warning	OUN	Comanche, Cotton	48 hr
Jul 26, 8:29 AM CDT	Areal Flood Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	2 hr
Jul 26, 10:58 AM CDT	Areal Flood Advisory	OUN	Cleveland, McClain	2 hr
Jul 26, 1:58 PM CDT	River Flood Warning	OUN	Oklahoma	6 hr
Jul 26, 3:25 PM CDT	River Flood Warning	OUN	Blaine, Caddo, Canadian, Custer	11 hr
Jul 26, 4:03 PM CDT	Special Weather Statement	OUN	Bryan	57 min

Nearby

Flash Flood Warnings in Oklahoma, 2013 Every flash flood warning in 2013

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.