Alert archive / Oklahoma / Flash Flood Warnings in 2003

Flash Flood Warning 14, NWS Norman, OK

June 13, 2003Kiowa County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 13, 2003, 5:42 AM CDT for Kiowa County, 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 outline as issued.

The facts

Issued: Jun 13, 2003, 5:42 AM CDT (10:42 UTC)
Expired: Jun 13, 2003, 8:45 AM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 63 km from the middle of the area, began a volume at 10:43 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 flash flood 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.7 hours before the alert went out and 149 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: 1453 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1232 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KOUN 131044
FFWOKC
OKC075-131345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
542 AM CDT FRI JUN 13 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KIOWA COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 845 AM CDT

* AT 542 AM CDT...SLOW MOVING THUNDERSTORMS HAVE DROPPED HEAVY RAIN 
OVER MUCH OF KIOWA COUNTY EARLY THIS MORNING. RAINFALL RATES OF OF 1 
TO 1.5 INCHES PER HOUR WILL PERSIST FOR THE NEXT HOUR OR TWO. THIS 
WILL LIKELY RESULT IN AREAS OF FLOODING. 

* LOCATIONS IN THE WARNING INCLUDE GOTEBO...HOBART...MOUNTAIN PARK...
  ROOSEVELT AND TOM STEED RESERVOIR

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARM LANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SUVS AND PICKUP TRUCKS. VEHICLES CAUGHT IN RISING WATER
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

LAT...LON 3507 9931 3491 9918 3462 9897 3487 9888
          3489 9863 3509 9875

$$

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 13, 4:15 AM CDT, 1 hour 27 minutes earlier.

Area forecast discussion, Jun 13, 4:15 AM CDT, 1 hour 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
348 CDT FRI JUN 13 2003

CONVECTION ONGOING THIS MORNING OVER SWRN SECS OF THE FA WHERE MDT
LOW LVL JET INTERACTING WITH SFC BNDRY. EXPECT TSTMS TO GRDLY
DIMINISH LATER THIS MRNG WITH WEAKENING LOW LVL JET. ACTIVE PATTERN
WILL CONTINUE THROUGH TONIGHT AS S/W MOVING INTO NM THIS MORNING
APPROACHES THE SRN PLAINS TONIGHT. MAIN FOCUS AGAIN LOOKS TO BE IN
SWRN SECS OF THE FA WHERE SYN SCALE SFC BNDRY EXPECTED TO BE LOCATED
AS S/W COMES OUT. VERY UNSTABLE AMS WILL BE IN PLACE SOUTH OF THE
BNDRY BY AFTN. HOWEVER...IT WILL BE DIFFICULT TO PINPOINT WHERE SFC
BNDRY WILL BE THIS AFTN AS CURRENT ACTIVITY MAY PUSH EFFECTIVE BNDRY
FARTHER S AND W. AT ANY RATE LOOKS LIKE BEST CHCS FOR TSTMS LATER
TODAY AND TONIGHT WILL BE IN THE SWRN HALF OF THE FA AND WILL TAPER
POPS ACCORDINGLY. S/W GRDLY DROPS SEWD ACROSS THE AREA WITH UPR BLDG
THROUGH THE ROCKIES INTO THE NRN PLAINS. AS A RESULT SLOW MOVING UPR
LOW GRDLY EVOLVES OVER SERN OK BY SUNDAY WITH WEAK SFC RDG PUSHING
INTO THE AREA. PRECIP CHANCES WILL GRDLY DIMINISH ACROSS NRN AND WRN
SECS OF THE FA AS THIS OCCURS. THIS FEATURE GRDLY BEGINS TO WEAKEN
AND MOVE EAST OF THE AREA LATER IN THE WEEK WITH UPR RDG BEGINNING
TO BUILD EWD INTO THE AREA. AS A RESULT WARMER TMPS WITH LOW PRECIP
THREAT EXPECTED BY LATE IN THE WEEK.

OKC   86   67   86   65  / 40   40   30   30
HBR   89   68   86   66  / 60   50   40   30
SPS   90   69   87   68  / 60   70   40   40
GAG   87   63   84   60  / 60   50   40   30
PNC   85   65   86   64  / 20   20   20   20
DUA   89   70   86   68  / 60   50   50   50

FORECAST ID = 02

.OUN...
OK...NONE.
TX...NONE.

Hazardous weather outlook, Jun 12, 11:53 AM CDT, 17 hours 49 minutes before

OKZ004>048-050>052-TXZ083>090-131200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1153 AM CDT THU JUN 12 2003

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 MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
SOUTHWESTERN OKLAHOMA AND WESTERN NORTH TEXAS...AND A SLIGHT RISK OF
SEVERE THUNDERSTORMS ACROSS THE REST OF NORTHERN...CENTRAL...AND
SOUTHERN OKLAHOMA.

LOCATIONS...
THE MODERATE RISK AREA IS SOUTH AND WEST OF A LINE FROM ERICK...TO
LAWTON...TO RYAN. THE SLIGHT RISK AREA INCLUDES THE REST OF THE
FORECAST AREA.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM 5 PM
THROUGH OVERNIGHT.

IMPACTS...
THE PRIMARY CONCERN WILL BE VERY LARGE HAIL...POSSIBLY GOLFBALL SIZE
OR LARGER...WHICH COULD DAMAGE VEGETATION...AUTOMOBILES...AND OTHER
PERSONAL PROPERTY.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD BE
PREPARED FOR SEVERE WEATHER OPERATIONS THIS AFTERNOON AND TONIGHT.

DISCUSSION...
A DRYLINE DEVELOPING IN CENTRAL AND SOUTHERN PORTIONS OF THE TEXAS
PANHANDLE IS EXPECTED TO MOVE TO A CHILDRESS...TO ABILINE LINE BY
LATE AFTERNOON. MOIST AND EXTREMELY UNSTABLE AIR WILL CONTINUE TO
MOVE NORTHWARD AHEAD OF THE DRYLINE...WEAKENING THE CAPPING
INVERSION...WITH THUNDERSTORM DEVELOPMENT EXPECTED ALONG THE DRYLINE
BY LATE AFTERNOON. ALTHOUGH VERTICAL WIND SHEAR WILL NOT BE THAT
STRONG...EXTREMELY UNSTABLE AIR WILL SUPPORT THE POTENTIAL FOR
SUPERCELLS ACROSS THE MODERATE RISK AREA.

ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED LATE TODAY...NORTH
OF THE DRYLINE...FROM THE NORTHERN TEXAS PANHANDLE...NORTHWARD INTO
COLORADO.

DURING THE EVENING AND OVERNIGHT HOURS...THESE THUNDERSTORMS SHOULD
EVOLVE INTO ONE OR MORE CLUSTERS...WHICH SHOULD MOVE THROUGH THE
AREA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT FRIDAY JUN 12.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...80 PERCENT.

OTHER HAZARDOUS WEATHER...
HEAVY RAIN REMAINS A GOOD BET WITH ANY THUNDERSTORMS THAT DEVELOP
THIS AFTERNOON AND TONIGHT. DUE TO RECENT RAINFALL AND WET
GROUND...THE POTENTIAL CONTINUES FOR RAPID RUNOFF AND ASSOCIATED
FLOODING.

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

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FRIDAY AND FRIDAY
NIGHT OVER WESTERN NORTH TEXAS AND MUCH OF SOUTHERN AND CENTRAL
OKLAHOMA...AND A SLIGHT RISK DURING THIS PERIOD ACROSS NORTHERN
OKLAHOMA. A SLIGHT RISK OF SEVERE THUNDERSTORMS CONTINUES AREAWIDE
SATURDAY AND SATURDAY NIGHT. THUNDERSTORM CHANCES WILL CONTINUE
AREAWIDE EACH DAY THROUGH EARLY NEXT WEEK.

OTHER HAZARDOUS WEATHER...
RECENT RAINFALL...ALONG WITH PROSPECTS FOR ADDITIONAL WIDESPREAD
RAIN OVER THE NEXT SEVERAL DAYS...WILL INCREASE THE POTENTIAL FOR
FLOODING OF RIVERS AND STREAMS THROUGH THE WEEKEND...AND POSSIBLY
INTO EARLY NEXT WEEK. DETAILS CAN BE FOUND IN A FLOOD POTENTIAL
OUTLOOK ISSUED BY THIS OFFICE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
FRIDAY.

NOTE...FLOOD POTENTIAL OUTLOOK CAN BE FOUND UNDER PRODUCT ID
OKCESFOKC.
JAMES

In the hours before

Local storm report, Jun 12, 11:59 PM CDT, 5 hours 43 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1159 PM CDT THU JUN 12 2003

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1157 PM    WICHITA FALLS             TX   1.00 INCH HAIL
06/12/03   WICHITA                        SPOTTER REPORT IN THE SOUTH
                                          SIDE OF WICHITA FALLS.

Local storm report, Jun 13, 12:05 AM CDT, 5 hours 37 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1205 AM CDT FRI JUN 13 2003

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1159 PM    LAKESIDE CITY             TX   1.00 INCH HAIL
06/12/03   ARCHER                         SPOTTER REPORT.

Local storm report, Jun 13, 12:34 AM CDT, 5 hours 8 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1234 AM CDT FRI JUN 13 2003

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1232 AM    1 S IOWA PARK             TX   .75 INCH HAIL
06/13/03   WICHITA                        SPOTTER REPORT.

Local storm report, Jun 13, 4:42 AM CDT, 1 hour before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
442 AM CDT FRI JUN 13 2003

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0408 AM    6 N FREDERICK             OK   .75 INCH HAIL
06/13/03   TILLMAN                        REPORTED BY SPOTTER.

0417 AM    2 E MANITOU               OK   .75 INCH HAIL
06/13/03   TILLMAN                        SPOTTER REPORT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 1:22 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	38 min
Jun 13, 1:59 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	61 min
Jun 13, 3:03 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	57 min
Jun 13, 4:06 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	54 min
Jun 13, 5:07 AM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	38 min
Jun 13, 6:10 AM CDT	Severe Thunderstorm Warning	OUN	Caddo	50 min
Jun 13, 6:29 AM CDT	Severe Thunderstorm Warning	OUN	Grady	46 min
Jun 13, 8:24 AM CDT	Severe Thunderstorm Warning	OUN	Seminole	51 min
Jun 13, 8:41 AM CDT	Severe Thunderstorm Warning	OUN	Hughes	49 min

Nearby

Flash Flood Warnings in Oklahoma, 2003 Every flash flood warning in 2003

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.