Alert archive / Mississippi / Tornado Watches in 2005
Tornado Watch 152
The Storm Prediction Center issued this tornado watch at Apr 11, 2005, 1:35 PM CDT for 16 counties in Mississippi; 4 counties in Tennessee. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2005, 1:35 PM CDT (18:35 UTC)
- Expired
- Apr 11, 2005, 7:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Yalobusha County, MS, Fayette County, TN, Hardeman County, TN, Hardin County, TN, McNairy County, TN
The radar
The Columbus AFB radar (KGWX), 104 km from the middle of the area, began a volume at 18:37 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 2:05 PM CDT | Flash Flood Warning | MEG | Panola, Quitman, Tallahatchie, Tate | 115 min |
| Apr 11, 2:11 PM CDT | Severe Thunderstorm Warning | MEG | Panola, Quitman | 52 min |
| Apr 11, 4:57 PM CDT | Severe Thunderstorm Warning | MEG | Monroe | 48 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
Little Rock, AR (KLZK), launched 12:00Z, 6.6 hours before the alert went out and 77 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
- 530 J/kg
- Mixed-layer CIN
- -157 J/kg
- Mixed-layer LCL
- 522 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 111835
SEL2
SPC WW 111835
MSZ000-TNZ000-120000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 152
NWS STORM PREDICTION CENTER NORMAN OK
135 PM CDT MON APR 11 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN MISSISSIPPI
WEST TENNESSEE
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 135 PM UNTIL 700
PM 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 APPROXIMATELY ALONG AND 50 STATUTE MILES
EAST AND WEST OF A LINE FROM 75 MILES NORTH OF TUPELO MISSISSIPPI
TO 40 MILES SOUTH SOUTHEAST OF OXFORD MISSISSIPPI. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU2).
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 150...WW 151...
DISCUSSION...THUNDERSTORMS/SUPERCELLS ON NRN FRINGE OF WRN MS SQUALL
LINE EXPECTED TO CONTINUE SPREADING NEWD ATOP SHALLOW WARM FRONT
EXTENDING APPROXIMATELY FROM GWO TO CBM. VERY STRONG LOW TO MID
LEVEL SHEAR SHOULD SUPPORT ADDITIONAL ROTATING CELLS...WITH
POTENTIAL FOR HAIL/HIGH WIND POSSIBLE TORNADOES.
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 22035.
...CORFIDI
352,0875 335,0882 335,0900 352,0894SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 3:56 AM CDT | Mesoscale Discussion | SPC | Attala, Carroll, Claiborne, Copiah, Hinds, Holmes and 10 more | 64 min |
| Apr 11, 6:17 AM CDT | Mesoscale Discussion | SPC | DeSoto, Tunica | 118 min |
| Apr 11, 9:41 AM CDT | Mesoscale Discussion | SPC | Adams, Amite, Attala, Carroll, Claiborne, Copiah and 23 more | 2 hr |
| Apr 11, 10:15 AM CDT | Tornado Watch | SPC | Adams, Bolivar, Calhoun, Carroll, Chickasaw, Claiborne and 14 more | 9 hr |
| Apr 11, 12:12 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Attala, Carroll, Claiborne, Copiah and 23 more | 2 hr |
| Apr 11, 1:17 PM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Coahoma, Itawamba, Lafayette, Lee and 10 more | 58 min |
| Apr 11, 1:41 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Covington, Franklin and 15 more | 2 hr |
| Apr 11, 2:05 PM CDT | Tornado Watch | SPC | Amite, Attala, Choctaw, Clarke, Clay, Copiah and 28 more | 7 hr |
| Apr 11, 6:35 PM CDT | Tornado Watch | SPC | Forrest, George, Greene, Hancock, Harrison, Jackson and 3 more | 4 hr |
| Apr 11, 6:52 PM CDT | Mesoscale Discussion | SPC | Amite, Attala, Choctaw, Clay, Copiah, Covington and 23 more | 83 min |
Nearby
Tornado Watches in Mississippi, 2005Tornado Watches in Tennessee, 2005Every tornado watch in 2005
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.