Alert archive / Oklahoma / Flash Flood Warnings in 2015

Flash Flood Warning 104, NWS Norman, OK

June 17, 2015Jefferson County, Love County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 17, 2015, 2:07 PM CDT for Jefferson County, Love County, Oklahoma. It was in force for 12 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 17, 2015, 2:07 PM CDT (19:07 UTC)
Expired: Jun 18, 2015, 2:00 AM CDT
In force: 12 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Jefferson County, OK, Love County, OK

The radar

The Altus AFB radar (KFDR), 137 km from the middle of the area, began a volume at 19:10 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, 7.1 hours before the alert went out and 133 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: 225 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 17, 1:05 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Jun 17, 1:05 PM CDT, 1 hour 2 minutes before

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Hazardous weather outlook, Jun 17, 11:55 AM CDT, 2 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1155 AM CDT WED JUN 17 2015

OKZ004>048-050>052-TXZ083>090-181700-
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-
1155 AM CDT WED JUN 17 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

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

.HEAVY RAINFALL AND FLOODING...
MAIN-STEM RIVER FLOODING IS OCCURRING IN PARTS OF SOUTHERN AND
CENTRAL OKLAHOMA. FLASH FLOODING WILL ALSO BE POSSIBLE THROUGH
EARLY THURSDAY... WITH THE BEST CHANCE IN PARTS OF SOUTH CENTRAL
AND SOUTHEAST OKLAHOMA.

.THUNDERSTORMS...
ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THROUGH EARLY
THURSDAY AS THE TROPICAL DEPRESSION MOVES OVER THE REGION. THERE
IS A MARGINAL RISK OF A FEW STRONG TO SEVERE STORMS LATE THIS
AFTERNOON AND EVENING ALONG AND SOUTH AND EAST OF A LINE FROM
CHANDLER AND SHAWNEE... TO PAULS VALLEY AND ARDMORE OKLAHOMA. A
FEW WEAK AND BRIEF TORNADOES OR STRONG GUSTY WINDS WILL BE
POSSIBLE DUE TO THE TROPICAL SYSTEM... BUT FLOODING RAINFALL WILL
BE A MUCH GREATER AND WIDESPREAD CONCERN.

THE POTENTIAL FOR SEVERE WEATHER WILL DECREASE AFTER SUNSET BUT
STORMS AND WIDESPREAD RAIN WILL CONTINUE OVERNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

.HEAVY RAINFALL AND FLOODING...
MAIN-STEM RIVER FLOODING WILL CONTINUE UNTIL AT LEAST FRIDAY IN
PARTS OF SOUTHERN AND CENTRAL OKLAHOMA. FLASH FLOODING WILL
REMAIN POSSIBLE IN PARTS OF SOUTHEAST... SOUTH CENTRAL... AND
CENTRAL OKLAHOMA THROUGH THURSDAY AFTERNOON.

.THUNDERSTORMS...
THUNDERSTORMS ARE POSSIBLE THURSDAY AND FRIDAY. THE RISK OF
SEVERE WEATHER IS VERY LOW.

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

25

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 2:47 AM CDT	River Flood Warning	OUN	Caddo, Garvin, Grady	58 hr
Jun 17, 2:47 AM CDT	River Flood Warning	OUN	Pottawatomie, Seminole	3 days
Jun 17, 8:30 AM CDT	River Flood Warning	OUN	Bryan	4 days
Jun 17, 8:30 AM CDT	River Flood Warning	OUN	Atoka	59 hr
Jun 17, 8:34 AM CDT	River Flood Warning	OUN	Carter, Garvin, Murray	42 hr
Jun 17, 1:01 PM CDT	Areal Flood Advisory	OUN	Carter, Jefferson, Love	3 hr
Jun 17, 2:14 PM CDT	River Flood Warning	OUN	Hughes, Seminole	4 days
Jun 17, 2:21 PM CDT	River Flood Warning	OUN	Garvin, Murray	19 hr
Jun 17, 2:51 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Coal, Garvin, Johnston, Marshall and 2 more	5 hr
Jun 17, 3:40 PM CDT	Flash Flood Warning	OUN	Bryan, Carter, Johnston, Love, Marshall, Murray and 1 more	10 hr
Jun 17, 4:33 PM CDT	Flash Flood Warning	OUN	Carter, Garvin, Murray, Pontotoc	9 hr
Jun 17, 5:12 PM CDT	Flash Flood Warning	OUN	Carter, Garvin, Jefferson, Stephens	6 hr
Jun 17, 6:07 PM CDT	Areal Flood Advisory	OUN	Cleveland, Garvin, Grady, Hughes, Lincoln, McClain and 3 more	6 hr
Jun 17, 5:22 PM CDT	Areal Flood Advisory	OUN	Clay	4 hr

Nearby

Flash Flood Warnings in Oklahoma, 2015 Every flash flood warning in 2015

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.