Alert archive / Louisiana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 45, NWS Lake Charles, LA

July 22, 2002Evangeline Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Jul 22, 2002, 7:16 PM CDT for Evangeline Parish, Louisiana. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 22, 2002, 7:16 PM CDT (00:16 UTC)
Expired: Jul 22, 2002, 8:15 PM CDT
In force: 59 min
Issued by: NWS Lake Charles, LA
Area: Counties, with a storm outline in the text

County Evangeline Parish, LA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.3 hours before the alert went out and 117 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: 3548 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1067 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

407 
WUUS54 KLCH 230016
SVRLCH
LAC039-230115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
714 PM CDT MON JUL 22 2002

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EVANGELINE PARISH IN CENTRAL LOUISIANA

* UNTIL 815 PM CDT

* AT 707 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM OVER NORTHEAST EVANGELINE PARISH...MOVING    
  SOUTHWEST AT 10 MPH.

* THIS STORM WILL BE NEAR...
  ST. LANDRY BY 730 PM.

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

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

LAT...LON 3083 9222 3090 9226 3081 9244 3070 9229

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 Jul 22, 1:53 PM CDT, 5 hours 23 minutes earlier.

Area forecast discussion, Jul 22, 1:53 PM CDT, 5 hours 23 minutes before

SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
153 PM CDT MON JUL 22 2002

SEABREEZE LOOKS A BIT MORE ACTIVE THAN YESTERDAY WITH ISOLATED TSTMS
ALREADY. BROAD UPPER LOW OVER THE SE U.S. ENHANCING RING OF FIRE
TSTMS NEAR EDGE OF CAP OVER MS AND SE LA. RIDGING HOLDS ON AVN THRU
TNITE OVER THE AREA...HOWEVER GRADUAL MOISTURE BUILD UP INCREASING
AREA INSTABILITIES THRU TUESDAY NIGHT...WITH THETA RIDGING BY
TUESDAY NIGHT AS WELL. AFTERNOON PCPN WILL RECOVER TOWARD SEASONAL
NORMS NEXT COUPLE OF DAYS AS LOW LEVEL RIDGE WEAKENS. STAYED CLOSE
TO AVN ON TEMPS. SFC FRONT IN SRN PLAINS NOW LOOKS TO STALL NORTH OF
US.

.EXTENDED...OVERALL PATTERN STAYS ON THE DRY SIDE NEXT WEEK AS
HIGH PRESSURE RIDGE RE-ESTABLISHES ACROSS THE GULF SOUTH.

OZONE ACTION DAY FOR HARDIN...JEFFERSON...AND ORANGE COUNTIES OF
SE TX...DECLARED BY TNRCC.

.LCH...NONE.

.PRELIMINARY NUMBERS...
      TU    WE    TH    FR    T W T F
BPT 74/93 75/93 74/94 76     0202231
LCH 74/93 74/93 76/94 77     -213232
LFT 75/94 76/93 75/93 76     1313141
AEX 75/93 74/93 73/94 76     1224121

11-SWEENEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 7:07 PM CDT	Severe Thunderstorm Warning	LCH	Saint Landry	53 min
Jul 22, 7:27 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	63 min
Jul 22, 7:46 PM CDT	Severe Thunderstorm Warning	LCH	Allen	59 min
Jul 22, 8:09 PM CDT	Severe Thunderstorm Warning	LCH	Acadia	66 min
Jul 22, 8:26 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	64 min
Jul 22, 8:31 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard	59 min
Jul 22, 8:57 PM CDT	Severe Thunderstorm Warning	LCH	Vermilion	63 min
Jul 22, 10:00 PM CDT	Special Marine Warning	LCH		60 min
Jul 23, 5:03 PM CDT	Severe Thunderstorm Warning	LCH	Allen	62 min
Jul 23, 5:28 PM CDT	Special Marine Warning	LCH		62 min
Jul 23, 5:44 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	61 min
Jul 23, 6:05 PM CDT	Severe Thunderstorm Warning	LCH	Allen	30 min
Jul 23, 6:06 PM CDT	Severe Thunderstorm Warning	LCH	Allen	29 min
Jul 23, 6:28 PM CDT	Severe Thunderstorm Warning	LCH	Jefferson Davis	62 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2002 Every severe thunderstorm warning in 2002

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.