Alert archive / Louisiana / Tornado Watches in 2001
Tornado Watch 784
The Storm Prediction Center issued this tornado watch at Oct 13, 2001, 4:00 AM CDT for 34 parishes in Louisiana; Issaquena County, Sharkey County, Mississippi; 9 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2001, 4:00 AM CDT (09:00 UTC)
- Expired
- Oct 13, 2001, 9:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Issaquena County, MS, Sharkey County, MS, Chambers County, TX, Hardin County, TX, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX, Sabine County, TX, San Augustine County, TX, Tyler County, TX
The radar
The Ft Polk radar (KPOE), 60 km from the middle of the area, began a volume at 09:01 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
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 4:16 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 44 min |
| Oct 13, 4:37 AM CDT | Severe Thunderstorm Warning | LCH | Hardin, Jasper, Newton | 53 min |
| Oct 13, 4:50 AM CDT | Severe Thunderstorm Warning | LCH | Jefferson, Orange | 55 min |
| Oct 13, 4:55 AM CDT | Tornado Warning | LCH | Jasper | 35 min |
| Oct 13, 5:02 AM CDT | Tornado Warning | LCH | Beauregard | 28 min |
| Oct 13, 5:05 AM CDT | Tornado Warning | LCH | Vernon | 55 min |
| Oct 13, 5:24 AM CDT | Tornado Warning | LCH | Beauregard | 36 min |
| Oct 13, 5:30 AM CDT | Severe Thunderstorm Warning | SHV | Winn | 45 min |
| Oct 13, 5:40 AM CDT | Severe Thunderstorm Warning | LCH | Calcasieu | 65 min |
| Oct 13, 5:48 AM CDT | Severe Thunderstorm Warning | LCH | Cameron | 57 min |
| Oct 13, 6:01 AM CDT | Severe Thunderstorm Warning | SHV | Ouachita | 29 min |
| Oct 13, 6:02 AM CDT | Severe Thunderstorm Warning | LCH | Rapides | 58 min |
| Oct 13, 6:03 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell | 27 min |
| Oct 13, 6:05 AM CDT | Severe Thunderstorm Warning | SHV | Grant | 40 min |
| Oct 13, 6:13 AM CDT | Severe Thunderstorm Warning | SHV | LaSalle | 62 min |
| Oct 13, 6:25 AM CDT | Severe Thunderstorm Warning | LCH | Allen, Beauregard | 65 min |
| Oct 13, 6:47 AM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron | 58 min |
| Oct 13, 6:57 AM CDT | Severe Thunderstorm Warning | LCH | Rapides | 48 min |
| Oct 13, 7:00 AM CDT | Severe Thunderstorm Warning | LCH | Jefferson Davis | 60 min |
| Oct 13, 7:10 AM CDT | Severe Thunderstorm Warning | LCH | Avoyelles | 65 min |
| Oct 13, 7:13 AM CDT | Severe Thunderstorm Warning | LCH | Evangeline | 62 min |
| Oct 13, 7:27 AM CDT | Tornado Warning | JAN | Catahoula, Concordia | 33 min |
| Oct 13, 7:32 AM CDT | Severe Thunderstorm Warning | LCH | Allen | 58 min |
| Oct 13, 7:42 AM CDT | Severe Thunderstorm Warning | JAN | Madison | 33 min |
| Oct 13, 7:56 AM CDT | Severe Thunderstorm Warning | LCH | Acadia | 64 min |
| Oct 13, 8:07 AM CDT | Severe Thunderstorm Warning | JAN | Concordia, Tensas | 23 min |
| Oct 13, 8:37 AM CDT | Tornado Warning | LCH | Acadia | 23 min |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.0 hours before the alert went out and 81 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
- 2537 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 640 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
925 WWUS9 KMKC 130852 SEL4 SEL4 MKC WW 130846 COR LAZ000-TXZ000-CWZ000-131400- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 784 STORM PREDICTION CENTER NORMAN OK 346 AM CDT SAT OCT 13 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHERN AND WESTERN LOUISIANA SOUTHEAST TEXAS ADJACENT COASTAL WATERS EFFECTIVE THIS SATURDAY MORNING FROM 400 AM UNTIL 900 AM 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 75 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES EAST OF GALVESTON TEXAS TO 35 MILES NORTH OF MONROE LOUISIANA. 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 782...TORNADO WATCH NUMBER 783. WATCH NUMBER 782...783 WILL NOT BE IN EFFECT AFTER 400 AM CDT. DISCUSSION...SQUALL LINE CONTINUES TO MOVE EWD AROUND 30 KT ACROSS E TX AND NW LA. A FEW SUPERCELLS HAVE FORMED E OF THE LINE IN SE TX...AND DEVELOPING CELLULAR CONVECTION NEAR THE SABINE RIVER SHOULD SPREAD EWD INTO LA WITH THE POTENTIAL FOR ADDITIONAL SUPERCELLS THIS MORNING. BOUNDARY LAYER DEW POINTS IN THE MID- UPPER 70S ACROSS SE TX/SW LA WILL CONTINUE TO SUPPORT SBCAPE VALUES OF 2000-3000 J/KG...WHILE VERTICAL SHEAR PROFILES WILL BECOME INCREASINGLY FAVORABLE FOR SUPERCELLS/TORNADOES IN LA AS THE STRONG MID LEVEL TROUGH APPROACHES FROM TX. 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 550. MEAN STORM MOTION VECTOR 22030. ...THOMPSON 330,0904 291,0924 291,0951 330,0931
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, 8:00 AM CDT | Tornado Watch | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 14 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 |
| Oct 12, 8:45 PM CDT | Tornado Watch | SPC | Anderson, Bell, Camp, Collin, Dallas, Delta and 23 more | 6 hr |
| Oct 12, 9:30 PM CDT | Tornado Watch | SPC | Atascosa, Bastrop, Bexar, Blanco, Brazos, Burleson and 14 more | 6 hr |
Nearby
Tornado Watches in Louisiana, 2001Tornado Watches in Texas, 2001Tornado Watches in Mississippi, 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; radar from the NEXRAD Level II archive.