Alert archive / Louisiana / Tornado Warnings in 1999
Tornado Warning 61, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Jan 22, 1999, 12:10 PM CST for Catahoula Parish, Louisiana. It was in force for 50 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 22, 1999, 12:10 PM CST (18:10 UTC)
- Expired
- Jan 22, 1999, 1:00 PM CST
- In force
- 50 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Catahoula Parish, LA
The radar
The Ft Polk radar (KPOE), 121 km from the middle of the area, began a volume at 18:13 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 22, 12:15 PM CST | Thunderstorm Wind | Jonesville, LA | A few trees were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 22, 9:45 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 6.2 hours before the alert went out and 182 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
- 958 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KJAN 221812 RRA TORJAN LAC025-221900- BULLETIN- EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSON MS 1210 PM CST FRI JAN 22 1999 THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A * TORNADO WARNING FOR... CATAHOULA PARISH IN NORTHEASTERN LOUISIANA * UNTIL 100 PM CST * AT 1209 PM CST... RADAR INDICATED A TORNADO 12 MILES SOUTH OF HARRISONBURG OR 4 MILES SOUTHWEST OF JONESVILLE... MOVING NORTH AT 45 MPH. * SOME LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE... JONESVILLE AT 1215 PM CST HARRISONBURG AT 1225 PM CST SICILY ISLAND AT 1235 PM CST IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS. 76
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jan 22, 10:23 AM CST, 1 hour 47 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 230400- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 1030 AM CST THU JAN 21 1999 ...SIGNIFICANT OUTBREAK OF SEVERE THUNDERSTORMS THROUGH TONIGHT... A PASSING UPPER LEVEL DISTURBANCE WILL COMBINE WITH ABUNDANT JET STREAM ENERGY AND ABUNDANT MOISTURE ALREADY IN PLACE TO TRIGGER AN OUTBREAK OF SIGNIFICANT SEVERE WEATHER TODAY INTO TONIGHT. A LINE OF STRONG STORMS WILL BE PASSING THROUGH THE STATE TODAY INTO TONIGHT. THE LINE OF STORMS WILL BE MOVING EAST AT 25 MPH WITH INDIVIDUAL STORMS MOVING NORTHEAST AT 45 MPH. THESE STORMS CAN RAPIDLY REACH SEVERE LIMITS AS THEY RACE NORTHEASTWARD. THE RAPID MOVEMENT OF THE STORMS WILL MEAN EXTREMELY HIGH WINDS WILL BE POSSIBLE ALONG WITH VERY LARGE HAIL. WITH STRONG...LOW LEVEL WINDS...CONDITIONS WILL BE FAVORABLE FOR TORNADO FORMATION...INCLUDING ISOLATED VERY DAMAGING TORNADOES. WHEN WARNINGS ARE ISSUED...THE NATIONAL WEATHER SERVICE STRONGLY RECOMMENDS THAT IMMEDIATE SAFETY ACTIONS BE TAKEN...YOUR LIFE MAY DEPEND ON IT. AS THE COLD FRONT PASSES THROUGH THE STATE TONIGHT INTO EARLY SATURDAY...COOLER MORE STABLE AIR WILL PREVENT THE FORMATION OF THUNDERSTORMS SATURDAY. ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL BE REQUIRED THROUGH TONIGHT. FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT: HTTP://WWW.JANNWS.STATE.MS.US /IN LOWER CASE LETTERS/
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 6:33 PM CST | Tornado Warning | JAN | Morehouse | 47 min |
| Jan 21, 7:07 PM CST | Severe Thunderstorm Warning | JAN | Richland | 48 min |
| Jan 21, 7:32 PM CST | Severe Thunderstorm Warning | JAN | Franklin | 48 min |
| Jan 21, 7:35 PM CST | Tornado Warning | JAN | West Carroll | 50 min |
| Jan 21, 8:03 PM CST | Severe Thunderstorm Warning | JAN | Catahoula | 32 min |
| Jan 21, 8:12 PM CST | Severe Thunderstorm Warning | JAN | East Carroll | 48 min |
| Jan 21, 8:47 PM CST | Tornado Warning | JAN | Franklin | 48 min |
| Jan 21, 8:55 PM CST | Tornado Warning | JAN | Catahoula | 50 min |
| Jan 21, 9:21 PM CST | Severe Thunderstorm Warning | JAN | East Carroll | 49 min |
| Jan 21, 9:30 PM CST | Tornado Warning | JAN | Franklin | 35 min |
| Jan 21, 9:42 PM CST | Severe Thunderstorm Warning | JAN | Tensas | 48 min |
| Jan 21, 9:49 PM CST | Tornado Warning | JAN | East Carroll | 46 min |
| Jan 21, 9:55 PM CST | Tornado Warning | JAN | Catahoula | 50 min |
| Jan 21, 10:00 PM CST | Tornado Warning | JAN | Tensas | 50 min |
| Jan 21, 10:09 PM CST | Tornado Warning | JAN | Madison | 51 min |
| Jan 21, 10:36 PM CST | Tornado Warning | JAN | Franklin | 49 min |
| Jan 21, 11:12 PM CST | Tornado Warning | JAN | Madison | 48 min |
| Jan 22, 6:53 AM CST | Tornado Warning | JAN | Morehouse | 47 min |
| Jan 22, 7:33 AM CST | Tornado Warning | JAN | West Carroll | 37 min |
| Jan 22, 7:40 AM CST | Tornado Warning | JAN | Morehouse | 40 min |
| Jan 22, 11:51 AM CST | Severe Thunderstorm Warning | JAN | Catahoula, Concordia | 49 min |
| Jan 22, 12:39 PM CST | Tornado Warning | JAN | Tensas | 46 min |
| Jan 22, 12:48 PM CST | Tornado Warning | JAN | Concordia | 47 min |
| Jan 22, 1:12 PM CST | Tornado Warning | JAN | Madison | 48 min |
Nearby
Tornado Warnings in Louisiana, 1999Every tornado warning in 1999Tornadoes in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.