Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 137, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Dec 4, 1999, 3:38 PM CST for Tyler County, Texas. It was in force for 47 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
- Dec 4, 1999, 3:38 PM CST (21:38 UTC)
- Expired
- Dec 4, 1999, 4:25 PM CST
- In force
- 47 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Tyler County, TX
The radar
The Lake Charles radar (KLCH), 132 km from the middle of the area, began a volume at 21:40 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 |
|---|---|---|---|
| Dec 4, 3:40 PM CST | Thunderstorm Wind | Colmesneil, TX |
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 nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 9.6 hours before the alert went out and 199 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
- 143 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 602 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 348 m²/s²
- 0-3 km storm-relative helicity
- 374 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 4, 1:45 PM CST, 1 hour 53 minutes earlier.
Area forecast discussion, Dec 4, 1:45 PM CST, 1 hour 53 minutes before
SOUTHEAST TEXAS...SOUTHWEST/CENTRAL LOUISIANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 145 PM CST SAT DEC 4 1999 WILL BE BRIEF FOR OBVIOUS REASONS. EXPECT TS TO CONTINUE TO DEVELOP TO THE WEST AND MOVE NORTHEAST AT 25 MPH WHILE PRE/FRONT TROUGH MOVES EAST AT AROUND 12 MPH. ATMS PRIMED FOR A FEW STRONG TO SEVERE STORMS WITH ALL INGREDIENTS IN PLACE. FRONT TO BE LOCATED FROM ELD TO SABINE LAKE BY 6Z AND GLH TO LFT BY 11Z. POPS WILL CONTINUE ON THE HIGH SIDE FOR TONIGHT UNTIL FROPA. DO EXPECT LOW CLOUDS TO OVERSPREAD THE AREA AROUND OR JUST AFTER DAYBREAK SUNDAY AFTER CLEARING BRIEFLY BEHIND THE FRONT. WINDS GO CALM AS FRONT PASSES OVER AND THEN WINDS PICK UP FROM THE WEST 10 TO 15 TURNING NW THROUGH THE DAY 15 TO 20 MPH AND 10 TO 15 BY SUNSET. CLEARING TREND TO BEGIN BY LATE SUNDAY NIGHT. GOING TO KILL PRECIP QUICKLY DUE TO DRY AIR ENTRAINING OVERNIGHT AND VERY LOW TOP CEILINGS ACROSS AREA BY SUNDAY. T.ERICKSON/17 PRELIMINARY NUMBERS... LCH 52/58/42/57 8000 LFT 62/62/43/54 8200 AEX 49/53/35/54 9000 BPT 51/56/43/57 8000 .LCH...SMALL CRAFT ADVISORY LOWER ATCHAFALAYA RIVER LA TO HIGH ISLAND TX OUT 60NM. TX...NONE LA...NONE
In the hours before
Special weather statement, Dec 4, 1:08 PM CST, 2 hours 30 minutes before
LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-050000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 108 PM CST SAT DEC 4 1999 ...SEVERE THUNDERSTORMS POSSIBLE TODAY... THUNDERSTORMS WILL MOVE INTO SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS THIS AFTERNOON. A FEW OF THESE STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. AN ISOLATED TORNADO IS ALSO POSSIBLE. THESE THUNDERSTORMS ARE ALONG AND IN ADVANCE OF A STRONG COLD FRONT THAT WILL MOVE ACROSS THE REGION OVERNIGHT. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST INFORMATION ON THIS DEVELOPING WEATHER SITUATION. MARCOTTE
Special weather statement, Dec 4, 1:08 PM CST, 2 hours 30 minutes before
LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-050000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 108 PM CST SAT DEC 4 1999 ...SEVERE THUNDERSTORMS POSSIBLE TODAY... THUNDERSTORMS WILL MOVE INTO SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS THIS AFTERNOON. A FEW OF THESE STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. AN ISOLATED TORNADO IS ALSO POSSIBLE. THESE THUNDERSTORMS ARE ALONG AND IN ADVANCE OF A STRONG COLD FRONT THAT WILL MOVE ACROSS THE REGION OVERNIGHT. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST INFORMATION ON THIS DEVELOPING WEATHER SITUATION. MARCOTTE
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning 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.