Alert archive / Oklahoma / Tornado Watches in 2003
Tornado Watch 327
The Storm Prediction Center issued this tornado watch at May 9, 2003, 7:45 PM CDT for 13 counties in Kansas; 15 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2003, 7:45 PM CDT (00:45 UTC)
- Expired
- May 10, 2003, 1:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 28 counties
Butler County, KS, Chase County, KS, Coffey County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, McPherson County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, Noble County, OK, Washita County, OK, Woods County, OK
The radar
The Vance AFB radar (KVNX), 25 km from the middle of the area, began a volume at 00:46 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
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:57 PM CDT | Severe Thunderstorm Warning | TOP | Anderson, Coffey, Franklin | 48 min |
| May 9, 7:57 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 33 min |
| May 9, 8:16 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 44 min |
| May 9, 8:17 PM CDT | Severe Thunderstorm Warning | OUN | Washita | 13 min |
| May 9, 8:32 PM CDT | Severe Thunderstorm Warning | ICT | Cowley | 58 min |
| May 9, 8:32 PM CDT | Severe Thunderstorm Warning | OUN | Noble | 28 min |
| May 9, 8:34 PM CDT | Severe Thunderstorm Warning | OUN | Custer | 41 min |
| May 9, 8:47 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Grady | 58 min |
| May 9, 8:51 PM CDT | Severe Thunderstorm Warning | ICT | Cowley | 39 min |
| May 9, 9:16 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Custer | 44 min |
| May 9, 9:18 PM CDT | Tornado Warning | OUN | Canadian, Grady | 27 min |
| May 9, 9:27 PM CDT | Tornado Warning | OUN | Blaine, Custer | 33 min |
| May 9, 9:44 PM CDT | Tornado Warning | OUN | Canadian, Oklahoma | 46 min |
| May 9, 9:58 PM CDT | Severe Thunderstorm Warning | OUN | Blaine | 37 min |
| May 9, 10:07 PM CDT | Severe Thunderstorm Warning | OUN | Logan | 38 min |
| May 9, 10:32 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 43 min |
| May 9, 10:35 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan | 55 min |
| May 10, 12:37 AM CDT | Severe Thunderstorm Warning | ICT | Harvey, Reno | 23 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, 0.8 hours before the alert went out and 161 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 100042
SEL7
SPC WW 100045
KSZ000-OKZ000-100600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 327
NWS STORM PREDICTION CENTER NORMAN OK
745 PM CDT FRI MAY 9 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN AND EASTERN KANSAS
NORTHERN AND WESTERN OKLAHOMA
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 745 PM UNTIL
100 AM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 15 MILES EAST SOUTHEAST OF CLINTON OKLAHOMA TO 20
MILES WEST NORTHWEST OF EMPORIA KANSAS.
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 318...WW 319...WW 320...WW
321...WW 322...WW 323...WW 324...WW 325...WW 326...
DISCUSSION...SUPERCELLS CENTRAL/WESTERN OK WILL CONTINUE TO
MOVE/DEVELOP NNEWD INTO SRN KS AS DRY LINE RETREATS NWWD THIS
EVENING. SHEAR WILL REMAIN FAVORABLE FOR POTENTIAL TORNADIC
SUPERCELLS GIVEN THE VERY UNSTABLE AIRMASS AND INCREASING LOW LEVEL
SLY JET.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 22030.
...HALES
351,1000 382,0973 382,0952 351,0975SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:47 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 5 more | 88 min |
| May 9, 10:04 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Chautauqua, Cherokee and 20 more | 26 min |
| May 9, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 14 more | 6 hr |
| May 10, 12:49 AM CDT | Mesoscale Discussion | SPC | Atchison, Barber, Brown, Butler, Chase, Clay and 24 more | 86 min |
| May 10, 1:15 AM CDT | Severe Thunderstorm Watch | SPC | Atchison, Barber, Brown, Butler, Chase, Clay and 25 more | 5 hr |
| May 10, 2:28 AM CDT | Mesoscale Discussion | SPC | Atchison, Barber, Brown, Butler, Chase, Clay and 25 more | 92 min |
| May 10, 3:05 AM CDT | Tornado Watch | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 17 more | 5 hr |
| May 10, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Doniphan, Douglas, Geary, Jackson and 10 more | 5 hr |
| May 10, 5:27 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 20 more | 93 min |
| May 10, 7:06 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Geary, Jackson and 10 more | 54 min |
| May 10, 9:16 AM CDT | Mesoscale Discussion | SPC | Chautauqua, Cherokee, Labette, Montgomery, Neosho, Wilson | 3 hr |
| May 10, 10:54 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Linn and 2 more | 66 min |
| May 10, 10:58 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Coffey and 18 more | 2 hr |
| May 10, 11:35 AM CDT | Tornado Watch | SPC | Linn, Miami | 7 hr |
| May 10, 11:55 AM CDT | Tornado Watch | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 1 more | 7 hr |
| May 10, 1:42 PM CDT | Mesoscale Discussion | SPC | Miami | 2 hr |
| May 10, 1:59 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 1 more | 2 hr |
| May 9, 7:12 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 20 more | 63 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 9, 11:10 PM CDT | Tornado Watch | SPC | Cherokee, Craig, Creek, Delaware, Lincoln, Mayes and 12 more | 6 hr |
| May 10, 1:22 AM CDT | Mesoscale Discussion | SPC | Cherokee, Craig, Creek, Delaware, Lincoln, Mayes and 12 more | 83 min |
Nearby
Tornado Watches in Oklahoma, 2003Tornado Watches in Kansas, 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.