Alert archive / Louisiana / Flash Flood Watches in 2015
Flash Flood Watch 9, NWS Lake Charles, LA
NWS Lake Charles, LA issued this flash flood watch at May 18, 2015, 9:52 AM CDT for Avoyelles Parish, Rapides Parish, Vernon Parish, Louisiana; Jasper County, Newton County, Tyler County, Texas. It took effect at May 18, 2015, 10:00 AM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 18, 2015, 9:52 AM CDT (14:52 UTC)
- In effect from
- May 18, 2015, 10:00 AM CDT
- Expired
- May 18, 2015, 6:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Lake Charles, LA
- Flood severity
- None
Counties Avoyelles Parish, LA, Rapides Parish, LA, Vernon Parish, LA, Jasper County, TX, Newton County, TX, Tyler County, TX
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.9 hours before the alert went out and 93 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
- 2308 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at May 18, 7:01 AM CDT, 2 hours 51 minutes earlier.
Area forecast discussion, May 18, 7:01 AM CDT, 2 hours 51 minutes before
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</html>Hazardous weather outlook, May 18, 5:36 AM CDT, 4 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAKE CHARLES LA 536 AM CDT MON MAY 18 2015 LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262- 191045- VERNON-RAPIDES-AVOYELLES-BEAUREGARD-ALLEN-EVANGELINE-ST. LANDRY- CALCASIEU-JEFFERSON DAVIS-ACADIA-LAFAYETTE-UPPER ST. MARTIN- VERMILION-IBERIA-ST. MARY-LOWER ST. MARTIN-WEST CAMERON- EAST CAMERON-TYLER-HARDIN-JEFFERSON-ORANGE-NORTHERN JASPER- NORTHERN NEWTON-SOUTHERN JASPER-SOUTHERN NEWTON- 536 AM CDT MON MAY 18 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL LOUISIANA...SOUTH CENTRAL LOUISIANA...SOUTHWEST LOUISIANA...WEST CENTRAL LOUISIANA...EAST CENTRAL TEXAS AND SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT A COMPLEX OF SHOWERS AND THUNDERSTORMS DRIVEN BY AN UPPER LEVEL IMPULSE INTERACTING WITH A REMNANT OUTFLOW BOUNDARY WILL SLOWLY MOVE SOUTH OVER THE AREA TODAY. WITH ABUNDANT MOISTURE OVER THE REGION...STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAINFALL WITH RATES BETWEEN 2 TO 3 INCHES AN HOUR AT TIMES. LOCALIZED FLOODING WILL BE POSSIBLE IN URBAN...LOW-LYING AND POOR DRAINAGE AREAS. IN ADDITION...FREQUENT CLOUD TO GROUND LIGHTNING CAN BE EXPECTED ALONG WITH GUSTY WINDS IN THE STRONGER STORMS. SHOWERS AND THUNDERSTORMS WILL DIMINISH DURING THE EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A DAILY CHANCE FOR SHOWERS OR THUNDERSTORMS IS EXPECTED. OVERALL...COVERAGE IS EXPECTED TO BE LOWER THAN ON MONDAY BUT CONVECTION WILL BE WIDELY SCATTERED TO SCATTERED. STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...FREQUENT CLOUD TO GROUND LIGHTNING AND GUSTY WINDS BUT SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. GMZ430-432-435-450-452-455-470-472-475-191045- 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 FROM 20 TO 60 NM- WATERS FROM INTRACOASTAL CITY TO CAMERON LA FROM 20 TO 60 NM- WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY LA FROM 20 TO 60 NM- 536 AM CDT MON MAY 18 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE NORTHWEST GULF OF MEXICO. .DAY ONE...TODAY AND TONIGHT MODERATE SOUTHEAST WINDS WILL RESULT IN SMALL CRAFT EXERCISE CAUTION CONDITIONS EARLY THIS MORNING. WINDS WILL DIMINISH SLIGHTLY BY MIDDAY. ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED WITH LOCALLY HIGHER WINDS AND SEAS...OCCASIONAL CLOUD TO WATER LIGHTNING AND HEAVY RAINFALL POSSIBLE IN THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY LIGHT TO MODERATE SOUTHEAST WINDS WILL CONTINUE. ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED EACH DAY WITH LOCALLY HIGHER WINDS AND SEAS...OCCASIONAL CLOUD TO WATER LIGHTNING AND HEAVY RAINFALL POSSIBLE IN THE STRONGER STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 24
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 9:02 PM CDT | River Flood Warning | LCH | Beauregard, Calcasieu | 48 days |
| May 18, 10:27 AM CDT | Areal Flood Advisory | LCH | Rapides | 3 hr |
| May 18, 12:15 PM CDT | Special Weather Statement | LCH | Allen | 30 min |
| May 18, 12:59 PM CDT | Special Weather Statement | LCH | Allen | 46 min |
| May 18, 1:22 PM CDT | Severe Thunderstorm Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 23 min |
| May 18, 3:44 PM CDT | Areal Flood Advisory | LCH | Calcasieu | 3 hr |
| May 18, 4:15 PM CDT | Special Weather Statement | LCH | Iberia | 45 min |
| May 18, 3:48 PM CDT | Areal Flood Advisory | LCH | Hardin, Tyler | 3 hr |
| May 18, 4:44 PM CDT | Flash Flood Warning | LCH | Hardin, Tyler | 3 hr |
Nearby
Flash Flood Watches in Louisiana, 2015Flash Flood Watches in Texas, 2015Every flash flood watch in 2015
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.