Alert archive / Louisiana / Flash Flood Warnings in 2014

Flash Flood Warning 13, NWS Jackson, MS

April 4, 2014Richland Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Apr 4, 2014, 4:36 AM CDT for Richland Parish, Louisiana. It was in force for 114 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: Apr 4, 2014, 4:36 AM CDT (09:36 UTC)
Expired: Apr 4, 2014, 6:30 AM CDT
In force: 114 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

County Richland Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 170 km from the middle of the area, began a volume at 09:36 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 9.6 hours before the alert went out and 160 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: 514 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 1384 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

218 
WGUS54 KJAN 040936
FFWJAN
LAC083-041130-
/O.NEW.KJAN.FF.W.0013.140404T0936Z-140404T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
436 AM CDT FRI APR 4 2014

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RICHLAND PARISH IN NORTHEAST LOUISIANA...
  THIS INCLUDES THE CITIES OF...START...RAYVILLE...

* UNTIL 630 AM CDT

* AT 435 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. ESTIMATED
  RADAR RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE INCHES...HAVE
  OCCURRED IN THE PAST HOUR.

* AREAS IN RAYVILLE AND TO THE NORTH AND NORTHEAST HAVE RECEIVED 2 TO
  3 INCHES OF RAIN BETWEEN 330 AND 430 AM. THIS WILL LIKELY CAUSE
  SIGNIFICANT STREET FLOODING IN LOW LYING AREAS AROUND RAYVILLE...
  AS WELL AS FLOODING OF SOME ROADWAYS IN RURAL AREAS OF NORTHERN
  RICHLAND PARISH.

VERY HEAVY RAINFALL WILL CONTINUE OVER THE WARNED AREA FOR THE NEXT
TWO HOURS WITH AN ADDITIONAL ONE INCH POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3251 9189 3253 9187 3252 9185 3254 9184
      3257 9179 3256 9175 3260 9172 3261 9167
      3266 9161 3258 9161 3254 9147 3240 9164
      3224 9198 3234 9202

$$

AEG

2 follow-up statements

774 
WGUS74 KJAN 041029
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
529 AM CDT FRI APR 4 2014

LAC083-041130-
/O.CON.KJAN.FF.W.0013.000000T0000Z-140404T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RICHLAND LA-
529 AM CDT FRI APR 4 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR
RICHLAND PARISH...

AT 529 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA. ESTIMATED RADAR RAINFALL AMOUNTS...ON THE ORDER OF ONE TO THREE
INCHES...HAVE OCCURRED IN THE PAST TWO HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WARDEN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3251 9189 3253 9187 3252 9185 3254 9184
      3257 9179 3256 9175 3260 9172 3261 9167
      3266 9161 3258 9161 3254 9147 3240 9164
      3224 9198 3234 9202

$$

CME

256 
WGUS74 KJAN 041042
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
542 AM CDT FRI APR 4 2014

LAC083-041052-
/O.CAN.KJAN.FF.W.0013.000000T0000Z-140404T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RICHLAND LA-
542 AM CDT FRI APR 4 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR RICHLAND PARISH...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 3251 9189 3253 9187 3252 9185 3254 9184
      3257 9179 3256 9175 3260 9172 3261 9167
      3266 9161 3258 9161 3254 9147 3240 9164
      3224 9198 3234 9202

$$

CME

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 2:22 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	53 min
Apr 4, 3:02 AM CDT	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	43 min
Apr 4, 3:49 AM CDT	Special Weather Statement	JAN	Madison	31 min
Apr 4, 4:06 AM CDT	Special Weather Statement	JAN	Richland	29 min
Apr 4, 4:33 AM CDT	Severe Thunderstorm Warning	JAN	Franklin, Richland	57 min
Apr 4, 5:21 AM CDT	Special Weather Statement	JAN	Catahoula	29 min
Apr 4, 6:38 AM CDT	Special Weather Statement	JAN	Concordia	32 min

Nearby

Flash Flood Warnings in Louisiana, 2014 Every flash flood warning in 2014

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.