Alert archive / Oklahoma / Tornado Watches in 2003
Tornado Watch 330
The Storm Prediction Center issued this tornado watch at May 9, 2003, 11:10 PM CDT for 18 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2003, 11:10 PM CDT (04:10 UTC)
- Expired
- May 10, 2003, 5:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Lincoln County, OK, Mayes County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 58 km from the middle of the area, began a volume at 04:12 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
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 11:40 PM CDT | Tornado Warning | TSA | Creek | 65 min |
| May 9, 11:41 PM CDT | Tornado Warning | OUN | Lincoln | 49 min |
| May 9, 11:47 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee | 43 min |
| May 9, 11:54 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 51 min |
| May 10, 12:20 AM CDT | Tornado Warning | OUN | Lincoln | 25 min |
| May 10, 12:21 AM CDT | Tornado Warning | TSA | Creek | 54 min |
| May 10, 12:34 AM CDT | Tornado Warning | TSA | Okmulgee, Tulsa | 56 min |
| May 10, 1:15 AM CDT | Tornado Warning | TSA | Creek, Okmulgee, Tulsa | 45 min |
| May 10, 1:22 AM CDT | Tornado Warning | TSA | Wagoner | 68 min |
| May 10, 2:29 AM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 46 min |
| May 10, 2:42 AM CDT | Severe Thunderstorm Warning | TSA | Mayes | 48 min |
| May 10, 2:49 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 56 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, 4.2 hours before the alert went out and 140 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
- 2823 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1182 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 100403
SEL0
SPC WW 100410
OKZ000-101000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 330
NWS STORM PREDICTION CENTER NORMAN OK
1110 PM CDT FRI MAY 9 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST OKLAHOMA
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1110 PM
UNTIL 500 AM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES EAST AND WEST
OF A LINE FROM 35 MILES EAST NORTHEAST OF BARTLESVILLE OKLAHOMA TO
60 MILES SOUTH SOUTHWEST OF TULSA OKLAHOMA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 327...WW 328...WW 329...
DISCUSSION...TORNADIC SUPERCELL VICINITY OKC EXPECTED TO CONTINUE
INTO NERN OK AS SHEAR PROFILES AND STRONG INSTABILITY REMAINS VERY
FAVORABLE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24030.
...HALES
365,0941 352,0950 352,0972 365,0963
WWUS20 KWNS 100403
SEL0
SPC WW 100410
OKZ000-101000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 330
NWS STORM PREDICTION CENTER NORMAN OK
1110 PM CDT FRI MAY 9 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST OKLAHOMA
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1110 PM
UNTIL 500 AM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES EAST AND WEST
OF A LINE FROM 35 MILES EAST NORTHEAST OF BARTLESVILLE OKLAHOMA TO
60 MILES SOUTH SOUTHWEST OF TULSA OKLAHOMA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 327...WW 328...WW 329...
DISCUSSION...TORNADIC SUPERCELL VICINITY OKC EXPECTED TO CONTINUE
INTO NERN OK AS SHEAR PROFILES AND STRONG INSTABILITY REMAINS VERY
FAVORABLE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24030.
...HALES
365,0941 352,0950 352,0972 365,0963SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:12 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 20 more | 63 min |
| May 9, 7:45 PM CDT | Tornado Watch | SPC | Alfalfa, Beckham, Blaine, Canadian, Custer, Dewey and 9 more | 5 hr |
| May 9, 7:47 PM CDT | Mesoscale Discussion | SPC | Craig, Mayes, Nowata, Osage, Ottawa, Pawnee and 2 more | 88 min |
| May 9, 8:24 PM CDT | Mesoscale Discussion | SPC | Blaine, Canadian, Custer, Garfield, Kingfisher, Logan and 2 more | 66 min |
| May 9, 9:41 PM CDT | Mesoscale Discussion | SPC | Blaine, Canadian, Kingfisher, Logan, Oklahoma | 64 min |
| May 9, 10:51 PM CDT | Mesoscale Discussion | SPC | Cherokee, Craig, Creek, Delaware, Lincoln, Mayes and 11 more | 54 min |
| May 10, 1:22 AM CDT | Mesoscale Discussion | SPC | Cherokee, Craig, Creek, Delaware, Lincoln, Mayes and 12 more | 83 min |
| May 10, 9:16 AM CDT | Mesoscale Discussion | SPC | Cleveland, Craig, Creek, Hughes, Lincoln, McClain and 12 more | 3 hr |
| May 10, 10:54 AM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Creek, Delaware, Mayes and 6 more | 66 min |
| May 10, 11:55 AM CDT | Tornado Watch | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 30 more | 7 hr |
| May 10, 1:59 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 29 more | 2 hr |
Nearby
Tornado Watches in Oklahoma, 2003Every tornado 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.