Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 56, NWS Jackson, MS

March 11, 2016Catahoula Parish, Franklin Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Mar 11, 2016, 4:19 AM CST for Catahoula Parish, Franklin Parish, Louisiana. It was in force for 6 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: Mar 11, 2016, 4:19 AM CST (10:19 UTC)
Expired: Mar 11, 2016, 10:15 AM CST
In force: 6 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Catahoula Parish, LA, Franklin Parish, LA

The radar

The Ft Polk radar (KPOE), 132 km from the middle of the area, began a volume at 10:19 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
Mar 11, 9:00 AM CST	FLASH FLOOD	Winnsboro, LA	MANY SECONDARY AND PARISH RDS ARE FLOODED AND IMPASSABLE. MAIN HIGHWAYS ARE OK NOW SINCE RAIN HAS SUBSIDED.

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

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 10.3 hours before the alert went out and 203 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 915 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

096 
WGUS54 KJAN 111019
FFWJAN
LAC025-041-111615-
/O.NEW.KJAN.FF.W.0056.160311T1019Z-160311T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
419 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CATAHOULA PARISH IN NORTHEASTERN LOUISIANA...
  FRANKLIN PARISH IN NORTHEASTERN LOUISIANA...

* UNTIL 1015 AM CST
    
* AT 417 AM CST...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. THREE TO FIVE INCHES OF RAIN
  HAVE FALLEN SINCE TUESDAY NIGHT. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WINNSBORO...MANGHAM...LARTO...JONESVILLE...WISNER...LIDDIEVILLE...
  BAKERS...ARCHIE...WALLACE RIDGE...SHERWOOD...AIMWELL...MANIFEST...
  ENTERPRISE...MAYNA...LEE BAYOU...JIGGER...ROSEFIELD...CROWVILLE...
  SICILY ISLAND AND GILBERT.

ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3193 9201 3193 9190 3207 9193 3233 9176
      3241 9148 3225 9156 3220 9149 3187 9158
      3173 9154 3174 9168 3163 9171 3163 9181
      3149 9181 3144 9172 3150 9185 3139 9178
      3136 9186 3128 9182 3130 9193 3122 9198

$$

DL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 6:33 PM CST	Areal Flood Warning	JAN	East Carroll, Franklin, Madison, Tensas	6 hr
Mar 11, 12:28 AM CST	Areal Flood Warning	JAN	Catahoula, East Carroll, Franklin, Madison	9 hr
Mar 11, 6:45 AM CST	Flash Flood Warning	JAN	East Carroll, Madison	6 hr
Mar 11, 7:04 AM CST	Flash Flood Warning	JAN	Tensas	6 hr
Mar 11, 8:31 AM CST	Flash Flood Warning	JAN	Morehouse, Richland, West Carroll	6 hr
Mar 11, 10:18 AM CST	Areal Flood Warning	JAN	Catahoula, Franklin	12 hr
Mar 11, 11:16 AM CST	Areal Flood Warning	JAN	East Carroll, Madison, Tensas	21 hr
Mar 11, 11:24 AM CST	River Flood Advisory	JAN	East Carroll	36 hr
Mar 11, 2:19 PM CST	Flash Flood Warning	JAN	Morehouse, Richland, West Carroll	3 hr
Mar 11, 5:55 PM CST	Areal Flood Warning	JAN	Catahoula, Concordia, Franklin, Morehouse, Richland, West Carroll	24 hr

Nearby

Flash Flood Warnings in Louisiana, 2016 Every flash flood warning in 2016

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.