Alert archive / Missouri / Tornado Watches in 2004
Tornado Watch 307
The Storm Prediction Center issued this tornado watch at May 27, 2004, 1:50 AM CDT for 21 counties in Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- May 27, 2004, 1:50 AM CDT (06:50 UTC)
- Expired
- May 27, 2004, 6:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 21 counties
Barton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Shannon County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 65 km from the middle of the area, began a volume at 06:52 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 1:51 AM CDT | Severe Thunderstorm Warning | SGF | Greene, Polk | 54 min |
| May 27, 2:35 AM CDT | Severe Thunderstorm Warning | SGF | Webster | 40 min |
| May 27, 2:56 AM CDT | Severe Thunderstorm Warning | SGF | Wright | 64 min |
| May 27, 3:16 AM CDT | Severe Thunderstorm Warning | SGF | Dallas | 44 min |
| May 27, 3:31 AM CDT | Severe Thunderstorm Warning | SGF | Laclede | 59 min |
| May 27, 3:42 AM CDT | Severe Thunderstorm Warning | SGF | Texas | 63 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
Springfield, MO (KSGF), launched 00:00Z, 6.8 hours before the alert went out and 115 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
- 1669 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 273 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 12.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 270651
SEL7
SPC WW 270650
MOZ000-271100-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 307
NWS STORM PREDICTION CENTER NORMAN OK
150 AM CDT THU MAY 27 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST MISSOURI
EFFECTIVE THIS THURSDAY MORNING FROM 150 AM UNTIL 600 AM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES NORTH OF SPRINGFIELD MISSOURI TO 40 MILES
WEST OF WEST PLAINS MISSOURI.
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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 304. WATCH NUMBER 304 WILL NOT BE IN EFFECT AFTER 150
AM CDT. CONTINUE...WW 305...WW 306...
DISCUSSION...ISOLATED SUPERCELL NEAR SURFACE WARM FRONT WILL
CONTINUE ESEWD WITH THE THREAT FOR AN ISOLATED TORNADO OR
TWO...LARGE HAIL...AND DAMAGING WINDS FOR THE NEXT COUPLE OF HOURS.
ADDITIONAL THUNDERSTORM DEVELOPMENT...WITH THE THREAT FOR LARGE
HAIL...WILL BE POSSIBLE ALONG AND IMMEDIATELY NE OF THE SURFACE
FRONT/STORM OUTFLOW WHERE 40-50 KT SWLY LLJ IMPINGES ON THE SURFACE
BOUNDARIES.
AVIATION...TORNADOES AND 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 500.
MEAN STORM MOTION VECTOR 28030.
...THOMPSON
380,0914 364,0910 364,0940 380,0945SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:57 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Bollinger, Butler, Camden and 46 more | 63 min |
| May 26, 8:29 PM CDT | Mesoscale Discussion | SPC | McDonald | 91 min |
| May 26, 8:30 PM CDT | Tornado Watch | SPC | Barton, Bates, Benton, Camden, Cedar, Dade and 15 more | 6 hr |
| May 26, 8:55 PM CDT | Tornado Watch | SPC | Bollinger, Cape Girardeau, Crawford, Dent, Franklin, Gasconade and 8 more | 5 hr |
| May 26, 9:36 PM CDT | Mesoscale Discussion | SPC | Audrain, Callaway, Lincoln, Marion, Monroe, Montgomery and 5 more | 54 min |
| May 26, 11:14 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Bollinger, Boone, Callaway and 49 more | 2 hr |
| May 26, 11:40 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Clay, Cooper, Henry, Howard, Jackson and 6 more | 5 hr |
| May 27, 1:16 AM CDT | Mesoscale Discussion | SPC | Carroll, Cass, Clay, Cooper, Howard, Jackson and 6 more | 119 min |
| May 27, 3:27 AM CDT | Mesoscale Discussion | SPC | Cedar, Christian, Dade, Dallas, Douglas, Greene and 12 more | 2 hr |
| May 27, 3:55 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Carroll, Cass and 14 more | 95 min |
| May 27, 11:10 AM CDT | Mesoscale Discussion | SPC | Adair, Audrain, Chariton, Clark, Daviess, Gentry and 20 more | 2 hr |
| May 27, 11:55 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Atchison, Clark, Gentry, Grundy, Harrison and 11 more | 6 hr |
| May 27, 1:52 PM CDT | Mesoscale Discussion | SPC | Adair, Andrew, Audrain, Boone, Buchanan, Caldwell and 32 more | 113 min |
| May 27, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Audrain, Boone, Buchanan, Caldwell, Callaway and 36 more | 7 hr |
| May 27, 3:37 PM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Caldwell, Callaway, Carroll, Chariton and 28 more | 113 min |
| May 27, 5:01 PM CDT | Mesoscale Discussion | SPC | Andrew, Audrain, Benton, Boone, Buchanan, Caldwell and 53 more | 89 min |
Nearby
Tornado Watches in Missouri, 2004Every tornado watch in 2004
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.