Alert archive / Mississippi / Tornado Watches in 2001
Tornado Watch 847
The Storm Prediction Center issued this tornado watch at Dec 13, 2001, 5:00 PM CST for 22 parishes in Louisiana; 39 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 13, 2001, 5:00 PM CST (23:00 UTC)
- Expired
- Dec 13, 2001, 10:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 61 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Madison Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Tensas Parish, LA, Vermilion Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Kemper County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Monroe County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 5:01 PM CST | Severe Thunderstorm Warning | JAN | Warren | 44 min |
| Dec 13, 5:14 PM CST | Severe Thunderstorm Warning | JAN | Tensas | 61 min |
| Dec 13, 5:27 PM CST | Flash Flood Warning | JAN | Catahoula, East Carroll, Franklin, Madison, Morehouse, Richland and 2 more | 4 hr |
| Dec 13, 5:44 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Warren | 61 min |
| Dec 13, 5:58 PM CST | Severe Thunderstorm Warning | JAN | Concordia | 52 min |
| Dec 13, 6:11 PM CST | Tornado Warning | JAN | Hinds, Madison | 49 min |
| Dec 13, 6:13 PM CST | Severe Thunderstorm Warning | JAN | Rankin | 62 min |
| Dec 13, 6:15 PM CST | Severe Thunderstorm Warning | JAN | Yazoo | 45 min |
| Dec 13, 6:28 PM CST | Severe Thunderstorm Warning | JAN | Jefferson | 47 min |
| Dec 13, 6:34 PM CST | Severe Thunderstorm Warning | JAN | Simpson | 41 min |
| Dec 13, 6:49 PM CST | Severe Thunderstorm Warning | JAN | Franklin | 46 min |
| Dec 13, 6:52 PM CST | Severe Thunderstorm Warning | JAN | Holmes | 28 min |
| Dec 13, 6:54 PM CST | Tornado Warning | JAN | Rankin, Scott | 66 min |
| Dec 13, 6:54 PM CST | Tornado Warning | JAN | Leake | 66 min |
| Dec 13, 6:57 PM CST | Severe Thunderstorm Warning | JAN | Marion | 33 min |
| Dec 13, 7:01 PM CST | Severe Thunderstorm Warning | JAN | Attala | 44 min |
| Dec 13, 7:22 PM CST | Severe Thunderstorm Warning | JAN | Smith | 38 min |
| Dec 13, 7:34 PM CST | Severe Thunderstorm Warning | JAN | Neshoba, Winston | 46 min |
| Dec 13, 7:34 PM CST | Severe Thunderstorm Warning | JAN | Newton | 46 min |
| Dec 13, 7:55 PM CST | Severe Thunderstorm Warning | JAN | Lamar, Marion | 50 min |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 11.0 hours before the alert went out and 135 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -160 m²/s²
- 0-3 km storm-relative helicity
- -208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 132256 SEL7 SPC WW 132246 LAZ000-MSZ000-CWZ000-140400- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 847 STORM PREDICTION CENTER NORMAN OK 446 PM CST THU DEC 13 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND EASTERN LOUISIANA SOUTHWEST...CENTRAL AND EASTERN MISSISSIPPI COASTAL WATERS EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1000 PM CST. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST NORTHWEST OF INTRACOASTAL CITY LOUISIANA TO 30 MILES SOUTH OF COLUMBUS AFB 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 846. WATCH NUMBER 846 WILL NOT BE IN EFFECT AFTER 500 PM CST. DISCUSSION...THUNDERSTORMS...INCLUDING EMBEDDED SUPERCELLS... EXPECTED TO CONTINUE TO DEVELOP ALONG DEEP CONFLUENCE ZONE ORIENTED SW-NE FROM NEAR AEX TO NEAR TUP. ACTIVITY WILL BE FED BY STRENGTHENING LOW/MID LEVEL WIND FIELD ASSOCIATED WITH SRN FRINGE OF 90 KT 500 MB SPEED MAX EJECTING NEWD FROM E TX. DEEP...NEAR MOIST ADIABATIC ENVIRONMENT IN WW AREA...COUPLED WITH INCREASING SHEAR...WILL BE SUPPORTIVE OF SOME LOW LEVEL STORM ROTATION... MAINLY ALONG AN JUST N OF SHALLOW WARM FRONT NOW EXTENDING FROM NEAR AEX ESE INTO SRN MS. TORNADO THREAT MAY ALSO EXIST WITH ANY SUSTAINED ISOLATED STORMS FORMING S OF THE MAIN SW-NE CONFLUENCE AXIS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 23035. ...CORFIDI 311,0930 341,0882 320,0882 290,0930
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 12:00 PM CST | Tornado Watch | SPC | Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 6 more | 6 hr |
Nearby
Tornado Watches in Mississippi, 2001Tornado Watches in Louisiana, 2001Every tornado watch in 2001
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.