Alert archive / Arkansas / Tornado Watches in 2001
Tornado Watch 782
The Storm Prediction Center issued this tornado watch at Oct 12, 2001, 11:30 PM CDT for 20 counties in Arkansas; 10 parishes in Louisiana; 10 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 12, 2001, 11:30 PM CDT (04:30 UTC)
- Expired
- Oct 13, 2001, 5:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Polk County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Bowie County, TX, Camp County, TX, Cass County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rusk County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 56 km from the middle of the area, began a volume at 04:31 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 11:54 PM CDT | Severe Thunderstorm Warning | SHV | Howard, Sevier | 51 min |
| Oct 12, 11:59 PM CDT | Severe Thunderstorm Warning | SHV | Bowie | 61 min |
| Oct 13, 12:24 AM CDT | Severe Thunderstorm Warning | SHV | Little River | 51 min |
| Oct 13, 12:25 AM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Pike | 35 min |
| Oct 13, 12:53 AM CDT | Severe Thunderstorm Warning | SHV | Howard | 37 min |
| Oct 13, 1:01 AM CDT | Severe Thunderstorm Warning | LZK | Pike | 44 min |
| Oct 13, 1:35 AM CDT | Severe Thunderstorm Warning | LZK | Clark | 50 min |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 4.5 hours before the alert went out and 54 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
- 1857 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.5
The text
As transmitted, in the capitals the NWS used until 2016.
748 WWUS9 KMKC 130417 SEL2 SEL2 MKC WW 130412 ARZ000-LAZ000-TXZ000-131000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 782 STORM PREDICTION CENTER NORMAN OK 1112 PM CDT FRI OCT 12 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN ARKANSAS NORTHWEST LOUISIANA NORTHEAST TEXAS EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1130 PM UNTIL 500 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 80 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF SHREVEPORT LOUISIANA TO 60 MILES WEST NORTHWEST OF PINE BLUFF ARKANSAS. 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 779...WW 780...WW 781... DISCUSSION...LINE OF SEVERE STORMS WITH PERSISTENT EMBEDDED BOW ECHOES IS MOVING RAPIDLY ENEWD ACROSS NERN TX. MOISTURE HAS BEEN RETURNNG NWD AHEAD OF THE LINE INTO SRN AR...CONTRIBUTING TO DESTABILIZATION ACROSS THE AREA. INCREASING SOUTHERLY LOW LEVEL JET WILL ENHANCE ALREADY FAVORABLE LOW LEVEL SHEAR/HELICITY TO MAINTAIN THREAT FOR WIDESPREAD DAMAGING WINDS...AND ISOLATED 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 23040. ...WEISS 342,0913 315,0924 315,0952 342,0941
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 9:30 AM CDT | Tornado Watch | SPC | Mississippi | 4 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, 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 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 Arkansas, 2001Tornado Watches in Louisiana, 2001Tornado Watches in Texas, 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.