Alert archive / Louisiana / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 50, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Sep 12, 2010, 2:33 PM CDT for Calcasieu Parish, Louisiana. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 12, 2010, 2:33 PM CDT (19:33 UTC)
- Expired
- Sep 12, 2010, 3:30 PM CDT
- In force
- 57 min
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
County Calcasieu Parish, LA
The radar
The Lake Charles radar (KLCH), 18 km from the middle of the area, began a volume at 19:35 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 nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.6 hours before the alert went out and 19 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
- 2847 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 12, 1:19 PM CDT, 1 hour 14 minutes earlier.
Area forecast discussion, Sep 12, 1:19 PM CDT, 1 hour 14 minutes before
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</html>Hazardous weather outlook, Sep 12, 3:18 AM CDT, 11 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 318 AM CDT SUN SEP 12 2010 GMZ430-432-435-450-452-455-470-472-475-LAZ027>033-041>045-051>055- TXZ180>182-201-215-216-131100- SABINE LAKE-CALCASIEU LAKE-VERMILION BAY- COASTAL WATERS FROM CAMERON, LA TO HIGH ISLAND, TX OUT 20 NM- COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON, LA OUT 20 NM- COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA OUT 20 NM- WATERS FROM CAMERON, LA TO HIGH ISLAND, TX EXTENDING FROM 20 NM TO 60 NM- WATERS FROM INTRACOASTAL CITY, LA TO CAMERON, LA EXTENDING FROM 20 NM TO 60 NM- WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY, LA EXTENDING FROM 20 NM TO 60 NM-VERNON-RAPIDES-AVOYELLES-BEAUREGARD- ALLEN-EVANGELINE-ST. LANDRY-CALCASIEU-JEFFERSON DAVIS-ACADIA- LAFAYETTE-UPPER ST. MARTIN-CAMERON-VERMILION-IBERIA-ST. MARY- LOWER ST. MARTIN-TYLER-JASPER-NEWTON-HARDIN-JEFFERSON-ORANGE- 318 AM CDT SUN SEP 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST GULF OF MEXICO...CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA... SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA AND SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED...WITH THE APPROACH OF A MIDWEST COLD FRONT. RAIN MAY BE HEAVY AT TIMES. THE COLD FRONT WILL EXIT INTO THE COASTAL WATERS THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A COOL MIDWEST AIR MASS WILL MOVE IN BEHIND THE DEPARTED FRONT... AND PERSIST THROUGH THE REMAINDER OF THE WORK WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Sep 12, 2:00 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAKE CHARLES LA 200 PM CDT SUN SEP 12 2010 LAZ030>033-041>043-052-122000- EVANGELINE LA-ALLEN LA-BEAUREGARD LA-ST. LANDRY LA-VERMILION LA- ACADIA LA-JEFFERSON DAVIS LA-CALCASIEU LA- 200 PM CDT SUN SEP 12 2010 ...SIGNIFICANT WEATHER ADVISORY FOR EVANGELINE...ALLEN... BEAUREGARD...ST. LANDRY...VERMILION...ACADIA...JEFFERSON DAVIS AND CALCASIEU PARISHES UNTIL 300 PM CDT... AT 153 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A CLUSTER OF STRONG THUNDERSTORMS 3 MILES NORTHEAST OF PINE ISLAND... MOVING SOUTH AT 15 MPH. * THE CLUSTER OF STRONG THUNDERSTORMS WILL BE NEAR... FENTON...BULLIER AND TOPSY BY 205 PM... EVANGELINE BY 210 PM... EGAN AND GILLIS BY 215 PM... JENNINGS BY 225 PM... WELSH AND MERMENTAU BY 230 PM... LEBLEU SETTLEMENT BY 235 PM... THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING...PEA TO NICKEL SIZE HAIL...AND WIND GUSTS TO NEAR 50 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED. THESE STORMS COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING. LAT...LON 3006 9259 3036 9331 3085 9277 3048 9204 K. KUYPER
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 2:00 PM CDT | Special Weather Statement | LCH | Acadia, Allen, Jefferson Davis | 60 min |
| Sep 12, 2:56 PM CDT | Areal Flood Advisory | LCH | Acadia, Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis | 79 min |
| Sep 12, 3:13 PM CDT | Special Marine Warning | LCH | 62 min | |
| Sep 12, 3:24 PM CDT | Special Weather Statement | LCH | Acadia, Beauregard, Calcasieu, Cameron, Jefferson Davis, Lafayette and 1 more | 51 min |
| Sep 12, 3:45 PM CDT | Tornado Warning | LCH | Vermilion | 31 min |
| Sep 12, 4:32 PM CDT | Special Marine Warning | LCH | 58 min | |
| Sep 12, 4:35 PM CDT | Special Marine Warning | LCH | 55 min | |
| Sep 12, 5:26 PM CDT | Special Marine Warning | LCH | 44 min | |
| Sep 12, 4:42 PM CDT | Special Weather Statement | LCH | Jefferson | 48 min |
| Sep 12, 5:32 PM CDT | Special Weather Statement | LCH | Jefferson | 43 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2010Every severe thunderstorm warning in 2010
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.