Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 53, NWS Lake Charles, LA

August 26, 2017Hardin County, Jasper County, Tyler County, Texas

NWS Lake Charles, LA issued this flash flood warning at Aug 26, 2017, 1:27 PM CDT for Hardin County, Jasper County, Tyler County, Texas. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 26, 2017, 1:27 PM CDT (18:27 UTC)
Expired
Aug 26, 2017, 6:00 PM CDT
In force
5 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

Counties Hardin County, TX, Jasper County, TX, Tyler County, TX

The radar

The Ft Polk radar (KPOE), 126 km from the middle of the area, began a volume at 18:27 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, 6.5 hours before the alert went out and 136 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2017-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2221 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 12:00Z on 2017-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2221 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
512 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
305 m²/s²
Significant tornado parameter
1.9
Supercell composite
13.5

Open this sounding in Storm Lab

The text

As transmitted.

862 
WGUS54 KLCH 261827
FFWLCH
TXC199-241-457-262300-
/O.NEW.KLCH.FF.W.0053.170826T1827Z-170826T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
127 PM CDT SAT AUG 26 2017

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Tyler County in southeastern Texas...
  Northeastern Hardin County in southeastern Texas...
  Jasper County in southeastern Texas...

* Until 600 PM CDT

* At 124 PM CDT, Doppler radar indicated heavy rain moving into the 
  warned area from the south and west. Up to two inches of rain have 
  already fallen across southern portions of Tyler County and will 
  cotninue to expand north this afternoon. Flash flooding is 
  expected to develop this afternoon as rainfall rates contiue to 
  increase.

* Some locations that will experience flooding include...
  Jasper, Woodville, Kirbyville, Colmesneil, Chester, Ebenezer, Fred,
  Rockland, Warren, Town Bluff, Wildwood, Browndell, Magnolia
  Springs, Mt. Union, Spurger, Roganville, Harrisburg, Ivanhoe, Sam
  Rayburn Dam and Hillister.

Additional rainfall amounts of two to six inches with locally higher 
amounts are possible in the warned area this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3106 9456 3105 9449 3103 9447 3111 9406
      3113 9404 3114 9391 3105 9389 3072 9387
      3051 9388 3052 9452 3065 9458 3101 9466

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 11:40 AM CDTTornado WarningLCHOrange35 min
Aug 26, 11:48 AM CDTFlash Flood WarningLCHHardin, Jasper, Jefferson, Newton, Orange6 hr
Aug 26, 12:03 PM CDTFlash Flood WarningLCHHardin6 hr
Aug 26, 12:32 PM CDTTornado WarningLCHJasper, Orange28 min
Aug 26, 12:55 PM CDTTornado WarningLCHJasper, Tyler35 min
Aug 26, 1:29 PM CDTTornado WarningLCHJasper, Tyler31 min
Aug 26, 1:41 PM CDTSpecial Weather StatementLCHJasper34 min
Aug 26, 1:43 PM CDTSpecial Weather StatementLCHHardin32 min
Aug 26, 1:54 PM CDTTornado WarningLCHJasper, Tyler36 min
Aug 26, 2:00 PM CDTFlash Flood WarningLCHNewton, Orange4 hr
Aug 26, 2:40 PM CDTTornado WarningLCHHardin35 min
Aug 26, 3:06 PM CDTTornado WarningLCHHardin, Tyler24 min
Aug 26, 3:33 PM CDTTornado WarningLCHTyler27 min
Aug 26, 4:18 PM CDTTornado WarningLCHJasper, Orange27 min
Aug 26, 4:30 PM CDTTornado WarningLCHNewton30 min
Aug 26, 5:45 PM CDTFlash Flood WarningLCHHardin, Jasper, Jefferson, Newton, Orange6 hr

Nearby

Flash Flood Warnings in Texas, 2017Every flash flood warning in 2017

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.