Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 9, NWS Lake Charles, LA

April 16, 2015Jefferson County, Texas

NWS Lake Charles, LA issued this flash flood warning at Apr 16, 2015, 1:15 PM CDT for Jefferson County, Texas. It was in force for 6 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
Apr 16, 2015, 1:15 PM CDT (18:15 UTC)
Expired
Apr 16, 2015, 7:15 PM CDT
In force
6 hr
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Flood severity
None

County Jefferson County, TX

The radar

The Houston radar (KHGX), 89 km from the middle of the area, began a volume at 18:16 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, 6.3 hours before the alert went out and 108 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 2015-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1693 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 2015-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.19395878Sfc1 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
1693 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

160 
WGUS54 KLCH 161815
FFWLCH
TXC245-162115-
/O.NEW.KLCH.FF.W.0009.150416T1815Z-150416T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
115 PM CDT THU APR 16 2015

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 415 PM CDT
    
* AT 111 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS 
  ALREADY FALLEN ACROSS WESTERN JEFFERSON COUNTY. ADDITIONAL 
  THUNDERSTORMS PRODUCING HEAVY RAINFALL ARE EXPECTED TO CONTINUE 
  THE NEXT FEW HOURS AND ADDITIONAL RAINFALL AMOUNTS OF 2 TO 5 
  INCHES IS POSSIBLE. FLASH FLOODING IS EXPECTED TO BEGIN 
  SHORTLY...ESPECIALLY IN THE NOME AND CHINA AREA.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  NOME...HAMSHIRE...CHINA...LA BELLE...FANNETT...WINNIE AND SEA RIM 
  STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2989 9436 2989 9444 3011 9444 3010 9440
      3013 9423 2968 9395 2967 9405 2956 9435

$$
2 follow-up statements
522 
WGUS74 KLCH 162029
FFSLCH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
329 PM CDT THU APR 16 2015

TXC245-162115-
/O.CON.KLCH.FF.W.0009.000000T0000Z-150416T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON TX-
329 PM CDT THU APR 16 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
JEFFERSON COUNTY...

AT 327 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. THREE TO SIX INCHES OF RAIN HAVE
FALLEN ACROSS WESTERN JEFFERSON COUNTY. FLASH FLOODING IS LIKELY 
ONGOING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NOME...HAMSHIRE...CHINA...LA BELLE...FANNETT...WINNIE.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES OF RAIN ARE 
POSSIBLE IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2989 9436 2989 9444 3011 9444 3010 9440
      3013 9423 2968 9395 2967 9405 2956 9435

$$
289 
WGUS54 KLCH 162056
FFWLCH
TXC245-170015-
/O.EXT.KLCH.FF.W.0009.000000T0000Z-150417T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
356 PM CDT THU APR 16 2015

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES  HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 715 PM CDT
    
* AT 352 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED 
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA.  THREE 
  TO 6 INCHES OF RAIN HAS FALLEN AND FLASH FLOODING IS LIKELY 
  ONGOING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  NOME...HAMSHIRE...CHINA...LA BELLE...FANNETT...WINNIE.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES ARE POSSIBLE IN
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 2989 9436 2989 9444 3011 9444 3010 9440
      3013 9423 2968 9395 2967 9405 2956 9435

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 4:20 AM CDTFlash Flood WatchLCHHardin, Jasper, Newton, Tyler59 hr
Apr 16, 12:20 PM CDTSpecial Weather StatementLCHJasper40 min
Apr 16, 12:55 PM CDTSevere Thunderstorm WarningLCHJasper, Newton50 min
Apr 16, 5:03 PM CDTSevere Thunderstorm WarningLCHTyler42 min
Apr 16, 5:46 PM CDTSevere Thunderstorm WarningLCHJasper, Tyler29 min
Apr 16, 6:04 PM CDTFlash Flood WarningLCHHardin, Tyler4 hr

Nearby

Flash Flood Warnings in Texas, 2015Every flash flood warning 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.