Alert archive / Louisiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 35, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at May 4, 1987, 2:06 PM CDT for Allen Parish, Louisiana. It was in force for 54 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
- May 4, 1987, 2:06 PM CDT (19:06 UTC)
- Expired
- May 4, 1987, 3:00 PM CDT
- In force
- 54 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Allen Parish, LA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 2:30 PM CDT | Hail 1.75 | Allen, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.1 hours before the alert went out and 69 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
- 241 J/kg
- Mixed-layer CIN
- -345 J/kg
- Mixed-layer LCL
- 1045 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
In the hours before
Special weather statement, May 4, 1:54 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 150 PM CDT MON MAY 4 1987 ...STRONG THUNDERSTORMS MOVE INTO SOUTHWEST LOUISIANA... AT 125 PM RADAR SHOWED STRONG THUNDERSTORMS IN WESTERN CAMERON PARISH JUST NORTHEAST OF SABINE PASS. THESE STORMS WILL PRODUCE VERY HEAVY RAIN...DANGEROUS LIGHTNING...GUSTY WINDS...AND POSSIBLY SOME SMALL HAIL. SCATTERED STRONG THUNDERSTORMS WERE ALSO SHOWN NEAR DEQUINCY...AND IN EXTREME EAST TEXAS BETWEEN HIGH ISLAND...SABINE PASS...KOUNTZE AND JASPER. RAIN WAS ALSO SHOWN IN EAST TEXAS BETWEEN LUFKIN...RAYBURN LAKE AND LIBERTY. SCATTERED STRONG THUNDERSTORMS WERE LOCATED BETWEEN BUNKIE...MORGAN CITY AND BATON ROUGE...=AND NEAR BOTH WHITE LAKE AND VERMILION BAY. MOVEMENT WAS NORTHEAST AT 25 MPH.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:15 PM CDT | Severe Thunderstorm Warning | LCH | Jefferson | 60 min |
| May 4, 1:38 PM CDT | Tornado Warning | LCH | Jefferson | 22 min |
| May 4, 1:43 PM CDT | Tornado Warning | LCH | Jasper, Newton | 37 min |
| May 4, 1:53 PM CDT | Severe Thunderstorm Warning | LCH | Orange | 52 min |
| May 4, 1:58 PM CDT | Tornado Warning | LCH | Cameron | 32 min |
| May 4, 2:06 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu | 54 min |
| May 4, 3:56 PM CDT | Severe Thunderstorm Warning | LCH | Rapides | 64 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 1987Every severe thunderstorm warning in 1987
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.