Alert archive / Mississippi / Tornado Watches in 2004
Tornado Watch 130
The Storm Prediction Center issued this tornado watch at Apr 29, 2004, 9:25 PM CDT for Colbert County, Franklin County, Lauderdale County, Alabama; 37 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2004, 9:25 PM CDT (02:25 UTC)
- Expired
- Apr 30, 2004, 2:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Alcorn County, MS, Attala County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Itawamba County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lawrence County, MS, Leake County, MS, Lee County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Winston County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 82 km from the middle of the area, began a volume at 02:27 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 9:28 PM CDT | Tornado Warning | JAN | Simpson | 77 min |
| Apr 29, 9:36 PM CDT | Severe Thunderstorm Warning | JAN | Attala, Madison | 44 min |
| Apr 29, 9:48 PM CDT | Severe Thunderstorm Warning | JAN | Leake | 62 min |
| Apr 29, 10:11 PM CDT | Severe Thunderstorm Warning | JAN | Rankin | 39 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
Jackson, MS (KJAN), launched 00:00Z, 2.4 hours before the alert went out and 85 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
- 851 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 851 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 300225
SEL0
SPC WW 300225
ALZ000-MSZ000-300700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 130
NWS STORM PREDICTION CENTER NORMAN OK
925 PM CDT THU APR 29 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHWEST ALABAMA
CENTRAL AND EASTERN MISSISSIPPI
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 925 PM UNTIL
200 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 45 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES NORTH NORTHEAST OF TUPELO MISSISSIPPI TO
45 MILES WEST SOUTHWEST OF LAUREL MISSISSIPPI.
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 128. WATCH NUMBER 128 WILL NOT BE IN EFFECT AFTER 925
PM CDT. CONTINUE...WW 125...WW 127...WW 129...
DISCUSSION...SUPERCELLS EXPECTED TO PERSIST INTO LATE EVENING AS
DEEP SHEAR AND INCREASING BOUNDARY LAYER MOISTURE INFLOW MAINTAIN
ENVIRONMENT FAVORABLE FOR SUSTENANCE OF EXISTING ACTIVITY. AN
ISOLATED STORM OR TWO MAY DEVELOP INVOF NW/SE WARM FRONT LIFTING NE
ACROSS SRN PART OF WW REGION. THREAT SHOULD DIMINISH WITH CONTINUED
BOUNDARY LAYER COOLING LATER TONIGHT.
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 400.
MEAN STORM MOTION VECTOR 25030.
...CORFIDI
350,0873 312,0890 312,0903 350,0891SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:51 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile, Monroe | 54 min |
| Apr 29, 8:55 PM CDT | Tornado Watch | SPC | Baldwin, Coffee, Covington, Dale, Escambia, Geneva and 3 more | 5 hr |
| Apr 29, 11:09 PM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Covington, Dale, Escambia, Geneva and 3 more | 96 min |
| Apr 29, 11:41 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Lauderdale | 64 min |
| Apr 30, 1:21 AM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Covington, Dale, Escambia, Geneva and 3 more | 24 min |
| Apr 29, 8:58 PM CDT | Mesoscale Discussion | SPC | Attala, Calhoun, Carroll, Chickasaw, Choctaw, Clarke and 28 more | 62 min |
Nearby
Tornado Watches in Mississippi, 2004Tornado Watches in Alabama, 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.