Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 615, NWS Norman, OK

June 13, 2003Kiowa County, Washita County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 2003, 5:07 AM CDT for Kiowa County, Washita County, Oklahoma. It was in force for 38 min. 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, 5:07 AM CDT (10:07 UTC)
Expired: Jun 13, 2003, 5:45 AM CDT
In force: 38 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Kiowa County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 83 km from the middle of the area, began a volume at 10:08 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 severe thunderstorm 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 13, 1:10 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.1 hours before the alert went out and 150 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.

654 
WUUS54 KOUN 131007
SVROKC
OKC075-149-131045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
506 AM CDT FRI JUN 13 2003

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KIOWA COUNTY IN SOUTHWEST OKLAHOMA
  WASHITA COUNTY IN WESTERN OKLAHOMA

* UNTIL 545 AM CDT

* AT 506 AM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 
  OVER HOBART...MOVING NORTHEAST AT 15 MPH. ADDITIONAL STRONG
  TO SEVERE STORMS WERE OVER SOUTHERN WASHITA COUNTY.

* LOCATIONS IN THE WARNING INCLUDE CLOUD CHIEF...CORDELL...GOTEBO...
  HOBART...MOUNTAIN VIEW...ROCKY AND SENTINEL

HAIL UP TO THE SIZE OF QUARTERS IS LIKELY.

LAT...LON 3503 9934 3485 9891 3524 9864 3537 9898

$$

CMS

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 13, 4:15 AM CDT, 52 minutes earlier.

Area forecast discussion, Jun 13, 4:15 AM CDT, 52 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 14 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 8 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 2 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, 4 hours 33 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, 25 minutes 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, 5:42 AM CDT	Flash Flood Warning	OUN	Kiowa	3 hr
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

Severe Thunderstorm Warnings in Oklahoma, 2003 Every severe thunderstorm 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.