Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at May 12, 1990, 6:31 PM CDT for Nacogdoches County, Texas. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1990, 6:31 PM CDT (23:31 UTC)
- Expired
- May 12, 1990, 7:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Lake Charles, LA
- Area
- Whole counties
County Nacogdoches County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.5 hours before the alert went out and 214 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
- 1655 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 430 m²/s²
- Significant tornado parameter
- 3.6
- Supercell composite
- 16.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBPT 122331 SVRBPT TXC347-130015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PORT ARTHUR TX 631 PM CDT SAT MAY 12 1990 THE NATIONAL WEATHER SERVICE IN PORT ARTHUR HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT FOR PERSONS IN THE FOLLOWING COUNTIES IN NORTHEAST TEXAS ...NORTHERN NACOGDOCHES COUNTY AT 623 PM THIS EVENING...WEATHER RADAR SHOWED A SEVERE THUNDERSTORM ENTERING THE NORTHWEST CORNER OF NACOGDOCHES COUNTY WEST OF CUSHING MOVING TO THE EAST AT 50 MILES AN HOUR. OTHER STORMS ASSOCIATED WITH THIS STORM IN THE TYLER-LONGVIEW AREAS HAVE HAD A HISTORY OF LARGE HAIL AND DAMAGING WINDS. PERSONS LIVING ACROSS THE NORTHERN HALF OF NACOGDOCHES CAN EXPECT SEVERE WEATHER CONDITIONS WITHIN THE NEXT HOUR. DCG A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. NNNN
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 12, 12:32 PM CDT, 5 hours 59 minutes before
LAZ005-006-007-008-011-012-121845- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 1235 AM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 200 PM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VERNON PARISH FOR THIS AFTERNOON AND TONIGHT... AT 1230 AM VERY STRONG THUNDERSTORMS WERE ACROSS CENTRAL AND NORTHERN LOUISIANA AND PART OF EAST TEXAS. THEY WERE GENERALLY NORTH OF AN ALEXANDRIA...LUFKIN TEXAS LINE. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG DAMAGING WINDS...LARGE HAIL...DANGEROUS LIGHTNING... AND VERY HEAVY RAINFALL. MOVEMENT WAS EAST AT 44 MILES AN HOUR.
Special weather statement, May 12, 12:36 PM CDT, 5 hours 55 minutes before
LAZ005-006-007-008-011-012-121845- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 1235 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 200 PM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VERNON PARISH FOR THIS AFTERNOON AND TONIGHT... AT 1230 PM VERY STRONG THUNDERSTORMS WERE ACROSS CENTRAL AND NORTHERN LOUISIANA AND PART OF EAST TEXAS. THEY WERE GENERALLY NORTH OF AN ALEXANDRIA...LUFKIN TEXAS LINE. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG DAMAGING WINDS...LARGE HAIL...DANGEROUS LIGHTNING... AND VERY HEAVY RAINFALL. MOVEMENT WAS EAST AT 45 MILES AN HOUR.
Special weather statement, May 12, 1:37 PM CDT, 4 hours 54 minutes before
LAZ005-006-007-008-011-012-121945- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 135 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 200 PM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VERNON PARISH FOR THIS AFTERNOON AND TONIGHT... AT 130 PM VERY STRONG THUNDERSTORMS WERE ACROSS CENTRAL AND NORTHERN LOUISIANA FROM WINNFIELD TO NEAR SHREVEPORT. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG DAMAGING WINDS...LARGE HAIL...DANGEROUS LIGHTNING AND VERY HEAVY RAINFALL. THESE STORMS WERE PART OF A LARGE AREA O F RAIN AND THUNDERSTORMS NORTH OF A LINE FROM ALEXANDRIA TO DE RIDDER TO GALVESTON TEXAS. MOVEMENT WAS EAST AT 50 MILES AN HOUR.
Special weather statement, May 12, 2:23 PM CDT, 4 hours 8 minutes before
TXZ033-046-122030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PORT ARTHUR TX 223 PM CDT SAT MAY 12 1990 THE TORNADO WATCH ISSUED EARLIER FOR MUCH OF EAST AND NORTHEAST TEXAS HAS BEEN EXTENDED UNTIL 9PM CDT TONIGHT. NO SEVERE WEATHER HAS BEEN REPORTED IN DEEP EAST TEXAS SINCE THE SEVERE THUNDERSTORM MOVED INTO LOUISIANA AROUND 9AM CDT. AT 220PM CDT RADAR SHOWS A FEW RAIN SHOWERS BETWEEN HOUSTON AND BEAUMONT EXTENDING NORTHWARD INTO THE EAST TEXAS LAKES AREA. SHOWERS WERE MOVING NORTHEAST AT 35 MPH. A FEW STRONGER STORMS WERE DEVELOPING ON THE LOUISIANA SIDE OF LAKE TOLEDO BEND. DJ NNNN
Special weather statement, May 12, 2:32 PM CDT, 3 hours 59 minutes before
LAZ005-006-007-008-011-012-122040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 235 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 900 PM CDT THAT INCLUDES VERNON PARISH IN SOUTHWEST LOUISIANA AND GRANT...LA SALLE ...AND RAPIDES PARISHES IN CENTRAL LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VERNON PARISH FOR THIS AFTERNOON AND TONIGHT... AT 225 PM VERY STRONG THUNDERSTORMS WERE ACROSS CENTRAL LOUISIANA FROM MANY TO WINNFIELD. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG DAMAGING WINDS...LARGE HAIL...DANGEROUS LIGHTNING AND VERY HEAVY RAINFALL. THESE STORMS WERE PART OF A LARGE AREA OF RAIN AND THUNDERSTORMOS WERE SCATTERED ACROSS NORTHERN..CENTRAL AND..AND SOUTHWEST LOUISIANA. MOVEMENT WAS EAST AT 50 MILES AN HOUR.
Special weather statement, May 12, 5:44 PM CDT, 47 minutes before
LAZ005-006-007-008-011-012-122340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE LAKE CHARLES LA 540 PM CDT SAT MAY 12 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 900 PM FOR CENTRAL LOUISIANA... AND VERNON PARISH IN WEST LOUISIANA... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VERNON PARISH TONIGHT... AT 530 PM...A CLUSTER OF SCATTERED STRONG THUNDERSTORMS WAS SHOWN IN EXTREME SOUTHWEST MISSISSIPPI FROM NATCHEZ TO 25 MILES SOUTHEAST AND SOUTH OF ALEXANDRIA TO BATON ROUGE. THESE STRONG THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MPH. A CLUSTER OF SCATTERED THUNDERSTORMS WAS ALSO LOCATED NORTHEAST THROUGH SOUTHWEST OF WINNFIELD LOUISIANA TO NORTH VERNON PARISH AND THE TOLEDO BEND RESERVOIR. SCATTERED MOSTLY RAINSHOWERS WER LOCATED FROM LAFAYETTE ACROSS LAKE CHARLES AND CAMERON TO NORTH OF BEAUMONT.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 6:19 AM CDT | Severe Thunderstorm Warning | LCH | Nacogdoches | 56 min |
| May 12, 7:15 AM CDT | Severe Thunderstorm Warning | LCH | Nacogdoches | 45 min |
| May 12, 7:38 AM CDT | Severe Thunderstorm Warning | LCH | Angelina, Nacogdoches | 52 min |
| May 12, 8:06 AM CDT | Tornado Warning | LCH | Sabine, San Augustine | 69 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990
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.