Alert archive / Oklahoma / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 708
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:53 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 52 min |
| Jul 9, 9:04 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant | 46 min |
| Jul 9, 9:31 PM CDT | Severe Thunderstorm Warning | OUN | Dewey | 49 min |
| Jul 9, 9:42 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 38 min |
| Jul 9, 9:49 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 56 min |
| Jul 9, 9:53 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 32 min |
| Jul 9, 10:02 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Washington | 58 min |
| Jul 9, 10:03 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 42 min |
| Jul 9, 10:16 PM CDT | Severe Thunderstorm Warning | OUN | Dewey | 34 min |
| Jul 9, 10:24 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 66 min |
| Jul 9, 10:38 PM CDT | Severe Thunderstorm Warning | OUN | Noble | 52 min |
| Jul 9, 10:49 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 56 min |
| Jul 9, 10:55 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 50 min |
| Jul 9, 11:01 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 44 min |
| Jul 9, 11:31 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 59 min |
| Jul 9, 11:37 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 53 min |
| Jul 9, 11:59 PM CDT | Severe Thunderstorm Warning | TSA | Mayes | 61 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.
- 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
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 365,0993SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:56 PM CDT | Mesoscale Discussion | SPC | Ottawa | 94 min |
| Jul 9, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | Craig, Kay, Nowata, Osage, Ottawa, Washington | 6 hr |
| Jul 9, 11:10 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Greer, Harmon, Jackson, Roger Mills | 3 hr |
| Jul 9, 11:22 PM CDT | Mesoscale Discussion | SPC | Adair, Caddo, Canadian, Cherokee, Cleveland, Creek and 26 more | 53 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.