Alert archive / Oklahoma / Flash Flood Warnings in 2015

Flash Flood Warning 113, NWS Norman, OK

June 18, 20159 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 18, 2015, 1:27 PM CDT for 9 counties in Oklahoma. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 18, 2015, 1:27 PM CDT (18:27 UTC)
Expired
Jun 18, 2015, 6:30 PM CDT
In force
5 hr
Issued by
NWS Norman, OK
Area
Storm-based polygon
Flood severity
None

Counties Bryan County, OK, Carter County, OK, Garvin County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pontotoc County, OK

The radar

The Norman radar (KTLX), 154 km from the middle of the area, began a volume at 18:30 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

Fort Worth, TX (KFWD), launched 12:00Z, 6.5 hours before the alert went out and 130 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2015-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 23 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2015-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
23 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
1328 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

987 
WGUS54 KOUN 181827
FFWOUN
OKC013-019-049-067-069-085-095-099-123-182330-
/O.NEW.KOUN.FF.W.0113.150618T1827Z-150618T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
127 PM CDT THU JUN 18 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JOHNSTON COUNTY IN SOUTHEASTERN OKLAHOMA...
  LOVE COUNTY IN SOUTHERN OKLAHOMA...
  SOUTHEASTERN JEFFERSON COUNTY IN SOUTHERN OKLAHOMA...
  WESTERN BRYAN COUNTY IN SOUTHEASTERN OKLAHOMA...
  MURRAY COUNTY IN SOUTHERN OKLAHOMA...
  PONTOTOC COUNTY IN EAST CENTRAL OKLAHOMA...
  CARTER COUNTY IN SOUTHERN OKLAHOMA...
  CENTRAL GARVIN COUNTY IN SOUTHERN OKLAHOMA...
  MARSHALL COUNTY IN SOUTHEASTERN OKLAHOMA...

* UNTIL 630 PM CDT

* 4 TO 12 INCHES OF RAIN FELL ACROSS SOUTHERN OKLAHOMA 
  ALONG...EAST...AND WEST OF THE I35 CORRIDOR OVER THE PAST 12 
  HOURS. ADDITIONAL RAINFALL NEAR ONE HALF TO ONE INCH IS EXPECTED 
  THROUGH THIS AFTERNOON MAINLY ALONG AND SOUTH OF A LINE FROM 
  ARDMORE TO DURANT...SOUTH TO THE RED RIVER.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ARDMORE...ADA...DURANT...PAULS VALLEY...SULPHUR...MADILL...
  TISHOMINGO...DAVIS...MARIETTA...LONE GROVE...HEALDTON...
  WYNNEWOOD...WILSON...KINGSTON...STRATFORD...DICKSON...BYNG...
  COLBERT...MANNSVILLE AND ROFF.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3385 9663 3390 9659 3383 9676 3396 9692
      3385 9709 3372 9712 3392 9721 3382 9743
      3399 9767 3386 9783 3388 9797 3405 9792
      3405 9756 3468 9755 3487 9661 3418 9643
      3388 9609 3376 9618 3377 9629 3369 9636

$$

03

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 8:35 PM CDTFlash Flood Warning EmergencyOUNCarter3 hr
Jun 17, 9:45 PM CDTFlash Flood WarningOUNCleveland, Garvin, Grady, McClain, Pontotoc, Pottawatomie and 1 more6 hr
Jun 17, 10:54 PM CDTFlash Flood WarningOUNJefferson, Stephens6 hr
Jun 18, 1:18 AM CDTAreal Flood AdvisoryOUNCanadian, Cleveland, Grady, Lincoln, Logan, McClain and 3 more6 hr
Jun 18, 1:35 AM CDTAreal Flood WarningOUNBryan, Carter, Garvin, Jefferson, Johnston, Love and 3 more12 hr
Jun 18, 3:46 AM CDTAreal Flood WarningOUNCleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole6 hr
Jun 18, 4:44 AM CDTAreal Flood WarningOUNJefferson, Stephens6 hr
Jun 18, 6:37 AM CDTAreal Flood AdvisoryOUNCanadian, Cleveland, Grady, Lincoln, Logan, McClain and 3 more4 hr
Jun 18, 8:15 AM CDTRiver Flood WarningOUNHughes6 hr
Jun 18, 8:16 AM CDTRiver Flood WarningOUNHughes30 hr
Jun 18, 9:48 AM CDTFlash Flood WarningOUNGarvin, Hughes, McClain, Pontotoc, Pottawatomie, Seminole6 hr
Jun 18, 11:09 AM CDTFlash Flood WarningOUNCarter, Jefferson, Stephens6 hr

Nearby

Flash Flood Warnings in Oklahoma, 2015Every 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.