Alert archive / Oklahoma / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 708

July 9, 200344 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jul 9, 2003, 8:50 PM CDT for 44 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 9, 2003, 8:50 PM CDT (01:50 UTC)
Expired
Jul 10, 2003, 2:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 44 counties

Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Craig County, OK, Creek County, OK, Custer County, OK, Delaware County, OK, Dewey County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Washita County, OK, Woods County, OK, Woodward County, OK

The radar

The Tulsa radar (KINX), 94 km from the middle of the area, began a volume at 01:49 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.

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 9, 8:53 PM CDTSevere Thunderstorm WarningOUNWoodward52 min
Jul 9, 9:04 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant46 min
Jul 9, 9:31 PM CDTSevere Thunderstorm WarningOUNDewey49 min
Jul 9, 9:42 PM CDTSevere Thunderstorm WarningOUNWoodward38 min
Jul 9, 9:49 PM CDTSevere Thunderstorm WarningOUNKay56 min
Jul 9, 9:53 PM CDTSevere Thunderstorm WarningOUNGrant32 min
Jul 9, 10:02 PM CDTSevere Thunderstorm WarningTSACraig, Nowata, Washington58 min
Jul 9, 10:03 PM CDTSevere Thunderstorm WarningOUNGarfield42 min
Jul 9, 10:16 PM CDTSevere Thunderstorm WarningOUNDewey34 min
Jul 9, 10:24 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee66 min
Jul 9, 10:38 PM CDTSevere Thunderstorm WarningOUNNoble52 min
Jul 9, 10:49 PM CDTSevere Thunderstorm WarningTSAOttawa56 min
Jul 9, 10:55 PM CDTSevere Thunderstorm WarningTSACraig, Nowata50 min
Jul 9, 11:01 PM CDTSevere Thunderstorm WarningTSAWashington44 min
Jul 9, 11:31 PM CDTSevere Thunderstorm WarningTSAOsage59 min
Jul 9, 11:37 PM CDTSevere Thunderstorm WarningTSARogers53 min
Jul 9, 11:59 PM CDTSevere Thunderstorm WarningTSAMayes61 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.8 hours before the alert went out and 131 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, Norman, OK at 00:00Z on 2003-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2350 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2003-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
2350 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1484 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
243 m²/s²
Significant tornado parameter
0.9
Supercell composite
9.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 100149
SEL8  
SPC WW 100150
OKZ000-100700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 708 
NWS STORM PREDICTION CENTER NORMAN OK 
850 PM CDT WED JUL 9 2003

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       NORTHERN AND CENTRAL OKLAHOMA

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 850 PM
UNTIL 200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 135 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES NORTH OF PONCA CITY OKLAHOMA
TO 40 MILES SOUTHEAST OF OKLAHOMA CITY OKLAHOMA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.


OTHER WATCH INFORMATION...CONTINUE...WW 702...WW 703...WW 706...WW
707...


DISCUSSION...LINEAR THUNDERSTORM/SUPERCELL COMPLEX IN S CNTRL KS
EXPECTED TO CONTINUE SSE AT 25-30 KTS AS SLY LOW LEVEL JET ALLOWS
FOR AUGMENTED CELL PROPAGATION....GIVEN INCREASING NLY COMPONENT TO
FLOW ALOFT.  INDIVIDUAL STORMS SHOULD REMAIN OUTFLOW-DOMINANT WITH
THREAT FOR HIGH WIND/HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 32030.


...CORFIDI

365,0943 345,0944 345,0992 365,0993 

WWUS20 KWNS 100149
SEL8  
SPC WW 100150
OKZ000-100700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 708 
NWS STORM PREDICTION CENTER NORMAN OK 
850 PM CDT WED JUL 9 2003

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       NORTHERN AND CENTRAL OKLAHOMA

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 850 PM
UNTIL 200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 135 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES NORTH OF PONCA CITY OKLAHOMA
TO 40 MILES SOUTHEAST OF OKLAHOMA CITY OKLAHOMA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.


OTHER WATCH INFORMATION...CONTINUE...WW 702...WW 703...WW 706...WW
707...


DISCUSSION...LINEAR THUNDERSTORM/SUPERCELL COMPLEX IN S CNTRL KS
EXPECTED TO CONTINUE SSE AT 25-30 KTS AS SLY LOW LEVEL JET ALLOWS
FOR AUGMENTED CELL PROPAGATION....GIVEN INCREASING NLY COMPONENT TO
FLOW ALOFT.  INDIVIDUAL STORMS SHOULD REMAIN OUTFLOW-DOMINANT WITH
THREAT FOR HIGH WIND/HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 32030.


...CORFIDI

365,0943 345,0944 345,0992 365,0993

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 9, 8:56 PM CDTMesoscale DiscussionSPCOttawa94 min
Jul 9, 9:50 PM CDTSevere Thunderstorm WatchSPCCraig, Kay, Nowata, Osage, Ottawa, Washington6 hr
Jul 9, 11:10 PM CDTSevere Thunderstorm WatchSPCBeckham, Greer, Harmon, Jackson, Roger Mills3 hr
Jul 9, 11:22 PM CDTMesoscale DiscussionSPCAdair, Caddo, Canadian, Cherokee, Cleveland, Creek and 26 more53 min

Nearby

Severe Thunderstorm Watches in Oklahoma, 2003Every severe thunderstorm watch 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.