Alert archive / Texas / Flash Flood Watches in 2015
Flash Flood Watch 7, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood watch at May 13, 2015, 3:37 PM CDT for 20 counties in Texas. It took effect at May 13, 2015, 4:00 PM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 13, 2015, 3:37 PM CDT (20:37 UTC)
- In effect from
- May 13, 2015, 4:00 PM CDT
- Expired
- May 13, 2015, 9:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Shreveport, LA
- Flood severity
- None
Counties Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 84 km from the middle of the area, began a volume at 20:37 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
Shreveport, LA (KBAD), launched 12:00Z, 8.6 hours before the alert went out and 92 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Shreveport, LA wrote its last area forecast discussion before this flash flood watch went out at May 13, 12:34 PM CDT, 3 hours 3 minutes earlier.
Area forecast discussion, May 13, 12:34 PM CDT, 3 hours 3 minutes before
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</html>Hazardous weather outlook, May 13, 12:00 PM CDT, 3 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SHREVEPORT LA 1200 PM CDT WED MAY 13 2015 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-141700- SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE- COLUMBIA-UNION-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-DE SOTO- RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE-NATCHITOCHES-WINN- GRANT-CALDWELL-LA SALLE- 1200 PM CDT WED MAY 13 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MUCH OF SOUTH ARKANSAS AND FOR ALL OF NORTH LOUISIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS WILL BE POSSIBLE...AS AN UPPER LEVEL DISTURBANCE APPROACHES THE REGION TODAY. HOWEVER...HAZARDOUS WEATHER IS NOT ANTICIPATED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... SCATTERED THUNDERSTORMS WILL REMAIN IN THE FORECAST THROUGH MUCH OF THE WEEK AS A WARM FRONT BEGINS LIFTING BACK NORTHWARD ACROSS THE AREA. MUCH OF THIS WILL BE HIT OR MISS DAYTIME ACTIVITY. AND WHILE THE SEVERE WEATHER THREAT LOOKS TO BE VERY MINIMAL OVER THE NEXT SEVERAL DAYS...ANY ADDITIONAL RAIN COMBINED WITH CURRENT CREST EXPECTATIONS COULD LEAD TO ADDITIONAL FLOODING OF SOME AREA LAKES AND RIVERS. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO OPERATORS AND STORM SPOTTERS WILL NOT BE NEEDED THROUGH TONIGHT. OKZ077-TXZ096-097-108>112-124>126-136>138-149>153-165>167-141700- MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD- UPSHUR-MARION-SMITH-GREGG-HARRISON-CHEROKEE-RUSK-PANOLA- NACOGDOCHES-SHELBY-ANGELINA-SAN AUGUSTINE-SABINE- 1200 PM CDT WED MAY 13 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST OKLAHOMA...EAST TEXAS AND NORTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT... SHOWERS AND ISOLATED THUNDERSTORMS WILL BE POSSIBLE...AS AN UPPER LEVEL DISTURBANCE APPROACHES THE REGION TODAY. WHILE WIDESPREAD FLOODING ISSUES ARE NOT ANTICIPATED AT THIS TIME...A FEW ISOLATED TROUBLE SPOTS CANNOT BE RULED OUT...ESPECIALLY UNDER HEAVIER DOWNPOURS OR WHERE PREVIOUS HEAVY RAINFALL HAS OCCURRED. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... SCATTERED THUNDERSTORMS WILL REMAIN IN THE FORECAST THROUGH MUCH OF THE NEXT WEEK AS A WARM FRONT BEGINS LIFTING BACK NORTHWARD ACROSS THE AREA. THE POSSIBILITY FOR HEAVY RAINFALL WILL CREEP IN LATE SATURDAY INTO SUNDAY...AS A COLD FRONT APPROACHES THE REGION AND BECOMES STALLED ACROSS PARTS OF SOUTHEAST OKLAHOMA...NORTHEAST TEXAS...AND SOUTHWEST ARKANSAS. WHILE THE SEVERE WEATHER THREAT LOOKS TO BE VERY MINIMAL OVER THE NEXT SEVERAL DAYS...ANY ADDITIONAL RAIN COMBINED WITH CURRENT CREST EXPECTATIONS COULD LEAD TO ADDITIONAL FLOODING OF SOME AREA LAKES AND RIVERS. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO OPERATORS AND STORM SPOTTERS WILL NOT BE NEEDED THROUGH TONIGHT. 24
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 12:53 PM CDT | River Flood Warning | SHV | Panola, Shelby | 9 days |
| May 13, 6:06 PM CDT | Areal Flood Advisory | SHV | Gregg | 114 min |
| May 13, 6:07 PM CDT | Flash Flood Warning | SHV | Cherokee, Nacogdoches, Rusk | 3 hr |
Nearby
Flash 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; radar from the NEXRAD Level II archive.