Alert archive / Louisiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 142, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Aug 18, 1998, 7:16 PM CDT for Jefferson Davis Parish, Louisiana. It was in force for 59 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
- Aug 18, 1998, 7:16 PM CDT (00:16 UTC)
- Expired
- Aug 18, 1998, 8:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Jefferson Davis Parish, LA
The radar
The Lake Charles radar (KLCH), 42 km from the middle of the area, began a volume at 00:15 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 |
|---|---|---|---|
| Aug 18, 7:50 PM CDT | Thunderstorm Wind 50 | Fenton, LA |
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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.3 hours before the alert went out and 41 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
- 1176 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1192 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
162 WUUS1 KLCH 190017 RRA SVRLCH LAC053-190115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LAKE CHARLES LA 716 PM CDT TUE AUG 18 1998 THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... JEFFERSON DAVIS PARISH IN SOUTHWESTERN LOUISIANA * UNTIL 815 PM CDT * AT 715 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHEAST OF JENNINGS MOVING WEST AT 25 MPH. * THIS STORM CAN BE EXPECTED NEAR... HATHAWAY BY 725 PM CDT JENNINGS BY 725 PM CDT WELSH BY 750 PM CDT SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN. FOR YOUR PROTECTION...SEEK SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS AND AVOID USING TELEPHONES...COMPUTERS OR OTHER ELECTRICAL EQUIPMENT UNTIL THE STORM HAS PASSED.
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 Aug 18, 2:20 PM CDT, 4 hours 56 minutes earlier.
Area forecast discussion, Aug 18, 2:20 PM CDT, 4 hours 56 minutes before
SOUTHEAST TEXAS..SOUTHWEST AND CENTRAL LOUISIANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAKE CHARLES LA 220 PM CDT TUE AUG 18 1998 ACTIVITY TODAY HAS BEEN CONCENTRATED OVER SOUTHEAST TEXAS AS EASTERLY FLOW HAS HELPED ENHANCE SEA BREEZE. BELIEVE THIS TREND WILL CONTINUE FOR TOMORROW WITH EASTERLY FLOW HELPING CONVECTION IN SE TX. MEANWHILE...THIS FLOW WILL PREVENT SEA BREEZE FROM MAKING MUCH PROGRESS INLAND CONFINING CONVECTION TO ALONG THE COAST. THINGS GET INTERESTING ON THU. LOW LEVEL CIRCULATION IN CENTRAL GULF IS FORECAST TO MOVE WEST BY THE MODELS AND STAYS WELL TO THE SOUTH OF LCH AREA. HOWEVER...INVERTED TROF MOVING WEST AROUND THE EDGE OF THE RIDGE SHOULD ENHANCE CONVECTION ALONG THE COASTAL AREAS OF LA FOR THE FOURTH PERIOD. 7 BPT 75/92/76/92 1303 LCH 75/93/74/91 0204 LFT 75/93/74/90 0204 AEX 73/93/72/93 0102
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:02 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu | 53 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1998Every severe thunderstorm warning in 1998
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.