Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 25, NWS Shreveport, LA
NWS Shreveport, LA issued this flash flood warning at Jul 2, 2021, 8:25 PM CDT for Gregg County, Harrison County, Upshur County, Texas. It was in force for 70 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 2, 2021, 8:25 PM CDT (01:25 UTC)
- Expired
- Jul 2, 2021, 9:35 PM CDT
- In force
- 70 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Gregg County, TX, Harrison County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 95 km from the middle of the area, began a volume at 01:28 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 (KSHV), launched 00:00Z, 1.4 hours before the alert went out and 103 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
- 865 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
388
WGUS54 KSHV 030125
FFWSHV
TXC183-203-459-030330-
/O.NEW.KSHV.FF.W.0025.210703T0125Z-210703T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Shreveport LA
825 PM CDT Fri Jul 2 2021
The National Weather Service in Shreveport has issued a
* Flash Flood Warning for...
Gregg County in northeastern Texas...
Southwestern Harrison County in northeastern Texas...
Southern Upshur County in northeastern Texas...
* Until 1030 PM CDT.
* At 825 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Longview, Kilgore, White Oak, Gladewater, Gilmer, Hallsville,
Clarksville City, East Mountain, Diana, West Mountain, Lakeport,
Union Grove, Warren City, Judson, Rolling Meadows and Pritchett.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3263 9506 3279 9480 3243 9446 3238 9483
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
131 follow-up statement
007 WGUS74 KSHV 030235 FFSSHV Flash Flood Statement National Weather Service Shreveport LA 935 PM CDT Fri Jul 2 2021 TXC183-203-459-030245- /O.CAN.KSHV.FF.W.0025.000000T0000Z-210703T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Gregg TX-Harrison TX-Upshur TX- 935 PM CDT Fri Jul 2 2021 ...FLASH FLOOD WARNING IS CANCELLED FOR GREGG, SOUTHWESTERN HARRISON AND SOUTHERN UPSHUR COUNTIES... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 3263 9506 3279 9480 3243 9446 3238 9483 $$ 13
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood warning in 2021
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.