Alert archive / Mississippi / Tornado Watches in 2001
Tornado Watch 785
The Storm Prediction Center issued this tornado watch at Oct 13, 2001, 8:00 AM CDT for 20 parishes in Louisiana; 37 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2001, 8:00 AM CDT (13:00 UTC)
- Expired
- Oct 13, 2001, 1:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 57 counties
Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery 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
45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 8:08 AM CDT | Severe Thunderstorm Warning | LCH | Vermilion | 67 min |
| Oct 13, 8:10 AM CDT | Tornado Warning | JAN | Copiah | 35 min |
| Oct 13, 8:31 AM CDT | Severe Thunderstorm Warning | LCH | Saint Landry | 59 min |
| Oct 13, 8:32 AM CDT | Tornado Warning | JAN | Rankin | 43 min |
| Oct 13, 8:39 AM CDT | Tornado Warning | LCH | Vermilion | 66 min |
| Oct 13, 8:42 AM CDT | Severe Thunderstorm Warning | LCH | Lafayette | 63 min |
| Oct 13, 8:42 AM CDT | Severe Thunderstorm Warning | JAN | Adams | 33 min |
| Oct 13, 8:57 AM CDT | Severe Thunderstorm Warning | JAN | Adams, Jefferson | 33 min |
| Oct 13, 9:00 AM CDT | Tornado Warning | JAN | Madison, Yazoo | 30 min |
| Oct 13, 9:10 AM CDT | Tornado Warning | JAN | Adams, Franklin | 50 min |
| Oct 13, 9:21 AM CDT | Severe Thunderstorm Warning | JAN | Claiborne, Warren | 29 min |
| Oct 13, 9:24 AM CDT | Severe Thunderstorm Warning | LCH | Saint Martin | 66 min |
| Oct 13, 9:28 AM CDT | Severe Thunderstorm Warning | JAN | Madison, Yazoo | 52 min |
| Oct 13, 9:33 AM CDT | Severe Thunderstorm Warning | JAN | Hinds | 57 min |
| Oct 13, 9:34 AM CDT | Tornado Warning | JAN | Jefferson | 41 min |
| Oct 13, 9:40 AM CDT | Severe Thunderstorm Warning | JAN | Simpson | 35 min |
| Oct 13, 9:43 AM CDT | Severe Thunderstorm Warning | LCH | Iberia | 62 min |
| Oct 13, 9:44 AM CDT | Tornado Warning | JAN | Copiah, Lincoln | 46 min |
| Oct 13, 9:49 AM CDT | Severe Thunderstorm Warning | JAN | Claiborne | 26 min |
| Oct 13, 10:01 AM CDT | Severe Thunderstorm Warning | JAN | Oktibbeha | 44 min |
| Oct 13, 10:25 AM CDT | Severe Thunderstorm Warning | LCH | St. Mary | 65 min |
| Oct 13, 10:26 AM CDT | Tornado Warning | JAN | Hinds | 49 min |
| Oct 13, 10:30 AM CDT | Tornado Warning | JAN | Copiah | 45 min |
| Oct 13, 10:38 AM CDT | Severe Thunderstorm Warning | JAN | Marion | 37 min |
| Oct 13, 10:51 AM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa | 54 min |
| Oct 13, 10:51 AM CDT | Severe Thunderstorm Warning | JAN | Madison | 54 min |
| Oct 13, 10:55 AM CDT | Severe Thunderstorm Warning | JAN | Noxubee | 50 min |
| Oct 13, 11:06 AM CDT | Tornado Warning | JAN | Rankin | 24 min |
| Oct 13, 11:10 AM CDT | Severe Thunderstorm Warning | JAN | Copiah, Lincoln | 50 min |
| Oct 13, 11:13 AM CDT | Severe Thunderstorm Warning | LIX | Amite, Pike | 62 min |
| Oct 13, 11:13 AM CDT | Severe Thunderstorm Warning | LIX | Walthall | 62 min |
| Oct 13, 11:35 AM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 25 min |
| Oct 13, 11:35 AM CDT | Tornado Warning | LIX | Saint Helena | 25 min |
| Oct 13, 11:41 AM CDT | Severe Thunderstorm Warning | JAN | Lowndes | 49 min |
| Oct 13, 11:49 AM CDT | Severe Thunderstorm Warning | JAN | Lawrence, Simpson | 56 min |
| Oct 13, 11:54 AM CDT | Severe Thunderstorm Warning | JAN | Rankin | 51 min |
| Oct 13, 12:00 PM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 60 min |
| Oct 13, 12:28 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 62 min |
| Oct 13, 12:28 PM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa | 62 min |
| Oct 13, 12:31 PM CDT | Severe Thunderstorm Warning | JAN | Jefferson Davis, Marion | 44 min |
| Oct 13, 12:46 PM CDT | Severe Thunderstorm Warning | JAN | Leake, Scott, Smith | 59 min |
| Oct 13, 12:46 PM CDT | Severe Thunderstorm Warning | JAN | Simpson | 59 min |
| Oct 13, 12:46 PM CDT | Tornado Warning | JAN | Marion | 29 min |
| Oct 13, 12:49 PM CDT | Severe Thunderstorm Warning | LIX | Washington | 56 min |
| Oct 13, 12:50 PM CDT | Severe Thunderstorm Warning | JAN | Covington, Jones | 55 min |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 1.0 hours before the alert went out and 151 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
- 1483 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 295 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 9.9
The text
As transmitted, in the capitals the NWS used until 2016.
168 WWUS9 KMKC 131252 SEL5 SEL5 MKC WW 131246 LAZ000-MSZ000-CWZ000-131800- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 785 STORM PREDICTION CENTER NORMAN OK 746 AM CDT SAT OCT 13 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHEAST LOUISIANA CENTRAL AND SOUTHWEST MISSISSIPPI ADJACENT COASTAL WATERS EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 800 AM UNTIL 100 PM CDT. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 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 35 MILES SOUTHEAST OF INTRACOASTAL CITY LOUISIANA TO 45 MILES WEST 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... CONTINUE...WW 784... DISCUSSION...SQUALL LINE CONTINUES TO MOVE EWD AROUND 30 KT TO NEAR THE MS RIVER...WHILE ADDITIONAL CELLS ARE DEVELOPING E OF THE LINE. BOUNDARY LAYER DEWPOINTS WELL INTO THE 70S ARE CONTRIBUTING TO SUFFICIENT INSTABILITY FOR SEVERE STORMS...AND VERTICAL SHEAR IS FAVORABLE FOR SUPERCELLS. EXPECT A THREAT OF DAMAGING WINDS AND PERHAPS ISOLATED LARGE HAIL TO PERSIST WITH THE LINE...AS WELL AS THE THREAT FOR A FEW TORNADOES WITH BOWING SEGMENTS AND ISOLATED STORMS E OF THE LINE. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 22035. ...THOMPSON 333,0881 292,0904 292,0924 333,0901
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 11:30 PM CDT | Tornado Watch | SPC | Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 4 more | 6 hr |
| Oct 13, 12:30 AM CDT | Tornado Watch | SPC | Natchitoches, Sabine, Vernon | 5 hr |
| Oct 13, 4:00 AM CDT | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Calcasieu and 28 more | 5 hr |
| Oct 13, 12:15 PM CDT | Tornado Watch | SPC | Ascension, Assumption, Jefferson, Lafourche, Livingston, Orleans and 9 more | 6 hr |
| Oct 13, 9:30 AM CDT | Tornado Watch | SPC | Alcorn, Benton, Calhoun, Chickasaw, Clay, DeSoto and 15 more | 4 hr |
| Oct 13, 1:00 PM CDT | Tornado Watch | SPC | Alcorn, Benton, Chickasaw, Clay, Itawamba, Lee and 6 more | 5 hr |
| Oct 13, 6:00 PM CDT | Tornado Watch | SPC | George, Jackson | 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.