Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 22, NWS Lake Charles, LA

March 18, 2000Tyler County, Texas

NWS Lake Charles, LA issued this severe thunderstorm warning at Mar 18, 2000, 2:42 PM CST for Tyler County, Texas. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Mar 18, 2000, 2:42 PM CST (20:42 UTC)
Expired: Mar 18, 2000, 3:45 PM CST
In force: 63 min
Issued by: NWS Lake Charles, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Tyler County, TX

The radar

The Ft Polk radar (KPOE), 135 km from the middle of the area, began a volume at 20:44 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 18, 2:15 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.7 hours before the alert went out and 148 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 46 J/kg
Mixed-layer CIN: -332 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KLCH 182043
SVRLCH
TXC241-457-182145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
242 PM CST SAT MAR 18 2000

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TYLER COUNTY IN SOUTHEAST TEXAS
 
* UNTIL 345 PM CST

* AT 237 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EXTREME NORTH CENTRAL TYLER COUNTY...
  MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL BE NEAR:

ROCKLAND BY 250 PM CST

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND TORRENTIAL RAIN.

CALL 337-477-5285 TO REPVORT SEVERE WEATHER TO THE WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CST
SATURDAY EVENING FOR SOUTHEAST TEXAS.

LAT...LON 3098 9448 3087 9431 3102 9420 3106 9443

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 Mar 18, 10:20 AM CST, 4 hours 22 minutes earlier.

Area forecast discussion, Mar 18, 10:20 AM CST, 4 hours 22 minutes before

SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1020 AM CST SAT MAR 18 2000

SHWRS AND TSTMS OVR THE NW GULF THIS MRNG FOCUSED ALG WARM FRNT
LIFTING NORTHWARD. FRONT WILL MOVE INTO SOUTHERN LA AND EASTERN TX
AS LOW FM THE WEST MOVES INTO CNTRL TX THIS AFTN. THIS WILL ALLOW LOW
LVL INSTABILITY FM THE GULF INTO THE AREA AS MID AND UPR LVL
DYNAMIC'S MOVE INTO NE TX BY THIS AFTN SUPPORTING CONVECTIVE
DEVELOPMENT AND PSBL SQ LINE EARLY THIS EVE. LATEST STLT INDCG LARGE
CLD FIELD OVR THE NW GULF EXTENDING NORTHWARD... ALTHOUGH BREAKS IN
CLDS WILL ALLOW TEMPS TO RECOVER INTO THE UPPER 70S TO NEAR 80 WITH
DEW POINTS CLIMBING INTO THE MID 60S.

MRNG SOUNDING OUT OF LCH HAS HELICITY VALUES AROUND 174 M2/S2...CAPE
ABOUT 700 J/KG AND WET BULB ZERO AT 9500 ASL. PRECIP WATER VALUES
REMAINS LOW AT .83 INCHES BUT THIS SHLD IMPROVE WITH THE INJECTION OF
GULF MSTR. WARM AIR HAS MOVED OFF THE MEXICAN PLATEAU THIS MRNG AND
SHOWING UP NICELY AROUND 750 MB WITH INVERSION EXTENDING THROUGH 700
MB...  WITH ATMOSPHERE DRYING OUT ABV 750 MB. THIS WILL CHANGE
THROUGH THE AFTERNOON HOURS... FM THE WEST AS AMPLITUDE TROF AND
NORTHERN STREAM DIVES DOWN INTO TX. INTERACTION DEVELOPS BETWEEN
NORTHERN AND SOUTHERN STREAMS CREATING STRONG UPPER DIFLUENCE.
BELIEVE THAT THE MAIN THREAT APPEARS TO BE FM DAMAGING WINDS AND
LARGE HAIL.

ETA CONTINUES TO BE THE MDL {OF CHOICE. WILL LET ZONES STAND ATTM.

.LCH...
LA...NONE
TX...NONE

.PRELIM...
BPT 79/62/73/48 5530
LCH 76/64/71/51 5440
LFT 77/61/69/53 5440
AEX 78/58/67/50 6550

KUYPER/RUA

In the hours before

Special weather statement, Mar 18, 11:30 AM CST, 3 hours 12 minutes before

LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-182230-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1130 AM CST SAT MAR 18 2000

...SEVERE WEATHER POSSIBLE THIS AFTERNOON...
...HEAVY RAINFALL ALSO EXPECTED THROUGH TONIGHT...

THERE IS A RISK OF SEVERE THUNDERSTORMS OVER SOUTHEAST TEXAS AND
SOUTHWEST LOUISIANA THIS AFTERNOON...IN ADVANCE OF A COLD FRONT
THAT WILL PUSH INTO EASTERN TEXAS. LOW LEVEL MOISTURE FROM THE GULF
COMBINED WITH A VIGOROUS UPPER LEVEL DISTURBANCE...WILL INTRODUCE
SUFFICIENT COLDER AIR ALOFT TO CAUSE THE AIRMASS OVER THE REGION TO
BECOME VERY UNSTABLE. THESE CONDITIONS WILL BE FAVORABLE FOR THE
FORMATION OF SQUALL-LINE THUNDERSTORM DEVELOPMENT.

AS THESE STORMS DEVELOP SOME STORMS WILL BECOME SEVERE. THE
GREATEST THREAT FROM STORMS TODAY WILL BE FROM LARGE HAIL AND
DAMAGING WINDS.

HEAVY RAINS ARE ALSO LIKELY WITH THESE STORMS...WITH BETWEEN ONE TO
THREE INCHES POSSIBLE. SOME LOCATIONS MAY SEE UPWARDS OF FOUR TO
FIVE INCHES IN HEAVIER STORMS...AS THEY REPEATEDLY AFFECT THE SAME
LOCATION. RAINFALL ACTIVITY WILL TAPER THROUGH THE EARLY MORNING
HOURS AS A COLD FRONT WILL MOVE INTO THE AREA LATE SUNDAY MORNING.

ACTIVATION OF STORM SPOTTERS MAY BE REQUIRED THIS AFTERNOON.
RESIDENTS WITH NOAA WEATHER RADIOS SHOULD SET THEIR RADIOS FOR
ALERT AND MONITOR FOR UPDATES.

STAY TUNED TO YOUR LOCAL MEDIA SOURCES AND CABLE TV WEATHER
OUTLETS FOR THE LATEST INFORMATION CONCERNING THESE THUNDERSTORMS.

ADDITIONAL WEATHER INFORMATION CAN ALSO BE OBTAINED THROUGH THE LAKE
CHARLES NATIONAL WEATHER SERVICE WEB SITE AT WWW.SRH.NOAA.GOV/LCH.

K. KUYPER

Local storm report, Mar 18, 1:14 PM CST, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
114 PM CST SAT MAR 18 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0115 PM    LAFAYETTE                 LA   .88 INCH HAIL
03/18/00   LAFAYETTE

Local storm report, Mar 18, 1:27 PM CST, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
127 PM CST SAT MAR 18 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0120 PM    LAFAYETTE                 LA   1.25 INCH HAIL
03/18/00   LAFAYETTE                      NUMEROUS REPORTS OF CAR
                                          DAMAGE AND BROKEN
                                          WINDOWS

FiN

Local storm report, Mar 18, 1:32 PM CST, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
132 PM CST SAT MAR 18 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0120 PM    LAFAYETTE                 LA   1.25 INCH HAIL
03/18/00   LAFAYETTE                      WIDESPREAD DAMAGE TO
                                          CARS...CRACKED
                                          WINSHIELDS

0122 PM    LAFAYETTE                 LA   1.75 INCH HAIL
03/18/00   LAFAYETTE                      QUARTER SIZE HAIL ACADIANA
                                          MALL

FN

Local storm report, Mar 18, 2:06 PM CST, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
206 PM CST SAT MAR 18 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0106 PM    ABBEVILLE                 LA   .88 INCH HAIL
03/18/00   VERMILION

Local storm report, Mar 18, 2:19 PM CST, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES, LA
219 PM CST SAT MAR 18 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0220 PM    5 N ARNAUDVILLE           LA   1.00 INCH HAIL
03/18/00   ST. LANDRY

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 18, 4:23 PM CST	Severe Thunderstorm Warning	LCH	Jasper	37 min
Mar 18, 4:37 PM CST	Severe Thunderstorm Warning	LCH	Newton	53 min
Mar 18, 4:59 PM CST	Severe Thunderstorm Warning	LCH	Jasper	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.