Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 37, NWS Lake Charles, LA

June 4, 2017Jefferson County, Orange County, Texas

NWS Lake Charles, LA issued this flash flood warning at Jun 4, 2017, 9:37 AM CDT for Jefferson County, Orange County, Texas. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 4, 2017, 9:37 AM CDT (14:37 UTC)
Expired: Jun 4, 2017, 12:30 PM CDT
In force: 3 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Jefferson County, TX, Orange County, TX

The radar

The Lake Charles radar (KLCH), 91 km from the middle of the area, began a volume at 14:36 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.

What was reported inside it

Time	Report	Where	Remark
Jun 4, 9:40 AM CDT	FLASH FLOOD	1 Sw Beaumont, TX	JEFFERSON COUNTY SHERIFF REPORTS STREET FLOODING ALONG BROOKS ROAD NEAR BEAUMONT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.6 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1499 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 733 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

626 
WGUS54 KLCH 041437
FFWLCH
TXC245-361-041730-
/O.NEW.KLCH.FF.W.0037.170604T1437Z-170604T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lake Charles LA
937 AM CDT SUN JUN 4 2017

The National Weather Service in Lake Charles has issued a

* Flash Flood Warning for...
  Central Jefferson County in southeastern Texas...
  Southwestern Orange County in southeastern Texas...

* Until 1230 PM CDT

* At 936 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Beaumont, Port Arthur, Nederland, Port Neches, Hamshire, Central
  Gardens, Fannett, La Belle, Port Acres and Southeast Texas Regional
  Airport.

Additional rainfall amounts of two to four inches are possible in 
the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Please report flooding to your local law enforcement agency when you
can do so safely.

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 3019 9421 3012 9406 3010 9409 3000 9390
      2980 9405 2965 9435 2989 9436

$$

Jones

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 7:13 AM CDT	Special Weather Statement	LCH	Orange	47 min
Jun 4, 9:00 AM CDT	Flash Flood Watch	LCH	Hardin, Jasper, Newton, Tyler	33 hr
Jun 4, 9:18 AM CDT	Flash Flood Warning	LCH	Jasper, Newton, Orange	3 hr
Jun 4, 12:24 PM CDT	River Flood Warning	LCH	Newton, Orange	10 days

Nearby

Flash Flood Warnings in Texas, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.