Alert archive / Oklahoma / Flash Flood Warnings in 2010

Flash Flood Warning 7, NWS Norman, OK

June 14, 20105 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 14, 2010, 2:22 PM CDT for 5 counties in Oklahoma. It was in force for 4 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: Jun 14, 2010, 2:22 PM CDT (19:22 UTC)
Expired: Jun 14, 2010, 6:15 PM CDT
In force: 4 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Caddo County, OK, Comanche County, OK, Grady County, OK, Kiowa County, OK, Stephens County, OK

The radar

The Altus AFB radar (KFDR), 82 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 93 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: 2057 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 591 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 12.2

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 Jun 14, 1:06 PM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Jun 14, 1:06 PM CDT, 1 hour 16 minutes before

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Hazardous weather outlook, Jun 14, 12:00 PM CDT, 2 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CDT MON JUN 14 2010

OKZ004>048-050>052-TXZ083>090-151000-
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-
1200 PM CDT MON JUN 14 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS ALL OF WESTERN NORTH TEXAS AND MUCH OF SOUTHERN AND CENTRAL
OKLAHOMA. HEAVY RAINFALL AND SIGNIFICANT FLOODING ALSO WILL BE AN
ONGOING CONCERN.

LOCATION...
THE SLIGHT RISK AREA IS ALONG AND SOUTH OF A LINE FROM ERICK TO
CLINTON TO STILLWATER.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM MID
AFTERNOON THROUGH THE OVERNIGHT HOURS.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
CENTRAL OKLAHOMA SHOULD PLAN FOR CONTINUING FLOODING OPERATIONS AT
LEAST THROUGH EARLY OR MID AFTERNOON. SPOTTER GROUPS AND EMERGENCY
MANAGEMENT PERSONNEL IN THE SLIGHT RISK AREA SHOULD BE PREPARED FOR
POTENTIAL SEVERE WEATHER OPERATIONS THIS AFTERNOON AND OVERNIGHT.

DISCUSSION...
WIDESPREAD HEAVY THUNDERSTORMS WILL DECREASE IN NUMBER AND INTENSITY
FROM THE OKLAHOMA CITY AREA NORTHEASTWARD INTO NORTHEASTERN
OKLAHOMA... NORTHEAST OF A NEARLY-STATIONARY OUTFLOW BOUNDARY THAT
EXTENDED FROM JUST NORTH OF ALTUS AND LAWTON... TO JUST SOUTH OF
CHICKASHA... TO JUST NORTH OF ADA AT MIDDAY. THE RISK OF SEVERE
WEATHER WILL BE MINIMAL WITH THESE STORMS... BUT THE CONTINUED
LIKELIHOOD OF HEAVY RAIN... ON TOP OF 6 TO 10 INCHES OF RAIN WHICH
ALREADY HAS FALLEN OVERNIGHT AND THIS MORNING... WILL MAINTAIN A
RISK OF SERIOUS AND POTENTIALLY DANGEROUS FLASH FLOODING ACROSS MUCH
OF THE OKLAHOMA CITY AREA THROUGH THE EARLY AFTERNOON.

THE FLASH FLOODING POTENTIAL WILL LESSEN DURING THE AFTERNOON... BUT
THE OUTFLOW BOUNDARY WILL PERSIST ACROSS SOUTHERN OKLAHOMA INTO THE
AFTERNOON AND EVENING. WARM MOIST AND UNSTABLE AIR PREVAILS
SOUTH OF THE BOUNDARY... AND FURTHER DESTABILIZATION IS LIKELY WITH
DAYTIME HEATING. MORE THUNDERSTORMS WILL LIKELY DEVELOP THIS
AFTERNOON NEAR THE OUTFLOW BOUNDARY AS IT DRIFTS SLOWLY SOUTH ACROSS
SOUTHERN OKLAHOMA AND TOWARD WESTERN NORTH TEXAS. INSTABILITY AND
DEEP-LAYER WIND SHEAR WILL BE SUFFICIENT TO SUPPORT ISOLATED SEVERE
THUNDERSTORMS. THE STRONGER STORMS... POSSIBLY INCLUDING
SUPERCELLS... WILL BE CAPABLE OF PRODUCING HAIL LARGER THAN
GOLFBALLS... WINDS IN EXCESS OF 65 MPH... AND POSSIBLY A FEW
TORNADOES. THE SEVERE WEATHER RISK WILL BE GREATEST OVER WESTERN
NORTH TEXAS AND FAR SOUTHWESTERN OKLAHOMA FROM MID AFTERNOON THROUGH
MID EVENING. THE STORMS WILL LIKELY ORGANIZE INTO ONE OR MORE
COMPLEXES LATER THIS EVENING AND WILL SPREAD EAST OVERNIGHT. AS A
RESULT THE THREAT FOR HEAVY RAINFALL AND FLOODING WILL INCREASE
AGAIN THIS EVENING AND OVERNIGHT... ESPECIALLY ACROSS WESTERN NORTH
TEXAS AND SOUTHERN OKLAHOMA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY JUN 15.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...60 PERCENT.

OTHER HAZARDOUS WEATHER...
THE FLASH FLOOD DANGER CANNOT BE OVERSTATED IN THE OKLAHOMA CITY
AREA. MAJOR FLOODING IS OCCURRING... AND WILL LIKELY CONTINUE AT
LEAST THROUGH THE EARLY TO MID AFTERNOON. ALL UNNECESSARY TRAVEL IS
DISCOURAGED INTO OR THROUGH THE OKLAHOMA CITY AREA AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL LIKELY BE ONGOING EARLY TUESDAY MORNING...
ESPECIALLY OVER NORTHERN TEXAS AND SOUTHERN OKLAHOMA... WITH
THE RISK OF FLOODING RAINS CONTINUING. STORMS WILL LIKELY WEAKEN OR
DISSIPATE DURING THE MORNING HOURS... BUT SCATTERED STORMS MAY
REFORM DURING THE AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS WILL
CONTINUE INTO WEDNESDAY... WITH DRY WEATHER THEN EXPECTED FROM
THURSDAY THROUGH THE WEEKEND.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5 AM
TUESDAY.

24

In the hours before

Special weather statement, Jun 14, 12:27 PM CDT, 1 hour 55 minutes before

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Special weather statement, Jun 14, 12:53 PM CDT, 1 hour 29 minutes before

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Special weather statement, Jun 14, 1:16 PM CDT, 1 hour 6 minutes before

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Special weather statement, Jun 14, 1:33 PM CDT, 49 minutes before

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Special weather statement, Jun 14, 1:37 PM CDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
137 PM CDT MON JUN 14 2010

OKZ024-025-027>029-141915-
CANADIAN OK-OKLAHOMA OK-CLEVELAND OK-GRADY OK-MCCLAIN OK-
137 PM CDT MON JUN 14 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CANADIAN...CLEVELAND...
GRADY...MCCLAIN AND OKLAHOMA COUNTIES.

ALTHOUGH MOST OF THE HEAVY RAINFALL HAS MOVED EAST OF THE OKLAHOMA
CITY METRO AREA EARLY THIS AFTERNOON...ADDITIONAL STORMS ARE
FORMING ACROSS SOUTHWEST OKLAHOMA.  THE STORMS ARE MOVING TO
THE NORTHEAST AROUND 25 MPH AND WILL LIKELY IMPACT MCCLAIN AND
CLEVELAND COUNTY BETWEEN 230 AND 3 PM. THE MORNING RAIN HAS STABLIZED
THE ATMOPSHERE SOME...SO THE APPROACHING STORMS MAY DECREASE IN
INTENSITY AS THEY APPROACH CENTRAL PARTS OF THE STATE.  IT APPEARS
THAT SOUTHERN PARTS OF OKLAHOMA CITY HAVE A GREATER RISK OF
ADDTIONAL HEAVY RAINFALL THAN NORTHERN PORTIONS.

LAT...LON 3490 9777 3528 9805 3571 9766 3572 9720
      3514 9714

Special weather statement, Jun 14, 1:57 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
157 PM CDT MON JUN 14 2010

TXZ083-084-141930-
HARDEMAN TX-FOARD TX-
157 PM CDT MON JUN 14 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR FOARD AND HARDEMAN COUNTIES.

AT 156 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 14 MILES SOUTH OF
GOODLETT...MOVING NORTHEAST AT 20 MPH. TORRENTIAL RAINFALL IS
OCCURRING WITH THIS STORM...AND MINOR FLOODING WILL BE POSSIBLE IN
LOW LYING AREAS.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF DIMES...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

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

LAT...LON 3411 10006 3420 10006 3424 10002 3424 10001
      3427 10000 3442 9986 3427 9966 3402 9996
      3410 10007

TAYLOR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 7:46 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	59 min
Jun 13, 8:06 PM CDT	Tornado Warning	OUN	Grant	24 min
Jun 13, 11:27 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	26 min
Jun 13, 11:50 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Ellis, Grant, Harper, Woods, Woodward	3 hr
Jun 14, 12:50 AM CDT	Areal Flood Advisory	OUN	Grant, Kay	6 hr
Jun 14, 2:15 AM CDT	River Flood Warning	OUN	Grant, Kay	48 hr
Jun 14, 2:37 AM CDT	Areal Flood Advisory	OUN	Alfalfa, Grant, Major, Woods	4 hr
Jun 14, 3:14 AM CDT	Areal Flood Advisory	OUN	Garfield, Noble	4 hr
Jun 14, 3:24 AM CDT	River Flood Warning	OUN	Grant, Kay, Noble	53 hr
Jun 14, 5:11 AM CDT	Areal Flood Advisory	OUN	Lincoln, Logan, Oklahoma, Payne	3 hr
Jun 14, 6:12 AM CDT	Flash Flood Warning	OUN	Lincoln, Logan, Oklahoma	3 hr
Jun 14, 8:08 AM CDT	Flash Flood Warning	OUN	Canadian, Cleveland, Oklahoma	4 hr
Jun 14, 8:19 AM CDT	Areal Flood Advisory	OUN	Payne	3 hr
Jun 14, 8:26 AM CDT	River Flood Warning	OUN	Major, Woods, Woodward	12 hr
Jun 14, 8:29 AM CDT	River Flood Warning	OUN	Oklahoma	29 hr
Jun 14, 8:29 AM CDT	River Flood Warning	OUN	Lincoln, Oklahoma, Pottawatomie	48 hr
Jun 14, 8:58 AM CDT	Flash Flood Warning	OUN	Lincoln, Logan	3 hr
Jun 14, 10:08 AM CDT	Flash Flood Warning	OUN	Logan, Noble, Payne	3 hr
Jun 14, 11:19 AM CDT	Areal Flood Advisory	OUN	Grady	3 hr
Jun 14, 11:54 AM CDT	Areal Flood Warning	OUN	Canadian, Cleveland, Lincoln, Logan, McClain, Noble and 3 more	6 hr
Jun 14, 12:57 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa	31 min
Jun 14, 2:11 PM CDT	River Flood Warning	OUN	Logan	30 hr
Jun 14, 2:11 PM CDT	River Flood Warning	OUN	Logan	36 hr
Jun 14, 2:41 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	49 min
Jun 14, 2:52 PM CDT	Flash Flood Warning	OUN	Cleveland, Garvin, Grady, McClain, Pottawatomie, Stephens	3 hr
Jun 14, 4:03 PM CDT	Flash Flood Warning	OUN	Garvin, McClain, Pontotoc, Pottawatomie, Seminole	3 hr
Jun 14, 4:15 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, McClain, Pontotoc, Pottawatomie, Seminole	60 min
Jun 14, 4:46 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Coal, Hughes, Johnston, Murray, Pontotoc	59 min
Jun 14, 5:40 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc	46 min
Jun 14, 6:16 PM CDT	Areal Flood Advisory	OUN	Comanche, Grady, Kiowa, Stephens	8 hr
Jun 14, 6:27 PM CDT	Areal Flood Advisory	OUN	Cleveland, Garvin, Hughes, McClain, Murray, Pontotoc and 3 more	8 hr
Jun 14, 6:30 PM CDT	River Flood Warning	OUN	Pottawatomie, Seminole	32 hr
Jun 14, 2:05 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman, Wilbarger	40 min
Jun 14, 3:06 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	39 min

Nearby

Flash Flood Warnings in Oklahoma, 2010 Every flash flood 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.