Alert archive / Louisiana / Flash Flood Warnings in 2016

Flash Flood Warning 76, NWS Shreveport, LA

July 28, 20167 parishes in Louisiana

NWS Shreveport, LA issued this flash flood warning at Jul 28, 2016, 10:47 AM CDT for 7 parishes in Louisiana. It was in force for 5 hr. 7 reports 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
Jul 28, 2016, 10:47 AM CDT (15:47 UTC)
Expired
Jul 28, 2016, 3:45 PM CDT
In force
5 hr
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Flood severity
None

Counties Caldwell Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA, Union Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 156 km from the middle of the area, began a volume at 15:51 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

TimeReportWhereRemark
Jul 28, 10:55 AM CDTFLASH FLOODMonroe, LANUMEROUS STREETS FLOODED ACROSS THE SOUTHERN SECTIONS OF MONROE NEAR AND ALONG STANDIFER AVENUE...THOMAS AVENUE...AND JACKSON STREET.
Jul 28, 11:00 AM CDTFLASH FLOOD1 E Brownsville-Bawcomv, LASTREET FLOODING ON LOUISIANA HWY 34 NEAR THE PAPER MILL.
Jul 28, 11:00 AM CDTFLASH FLOOD1 Nw Brownsville-Bawcom, LASTREET FLOODING NEAR THE INTERSECTION OF WASHINGTON STREET AND NEW NATCHITOCHES ROAD.
Jul 28, 11:00 AM CDTFLASH FLOODMonroe, LASTREET FLOODING REPORTED NEAR THE INTERSECTIONS OF STUBBS AVENUE AND 4TH STREET...AND STUBBS AVENUE AND 5TH STREET.
Jul 28, 11:15 AM CDTFLASH FLOODWest Monroe, LANUMEROUS STREETS FLOODED ACROSS THE CITY INCLUDING INTERSECTION OF CLAIBORNE AND CYPRESS STREETS...NORTH 7TH STREET BETWEEN STELLA AND NATCHITOCHES STREETS...SOUTH 5TH STREET...AND PORTIONS OF TRENTON STREET.
Jul 28, 11:30 AM CDTFLASH FLOOD4 Nnw Columbia, LANUMEROUS COUNTY ROADS FLOODED.
Jul 28, 3:32 PM CDTFLASH FLOODWest Monroe, LAWATER OVER THE ROAD NEAR RED CUT RD.

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 12:00Z, 3.8 hours before the alert went out and 163 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, Shreveport, LA at 12:00Z on 2016-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1145 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, Shreveport, LA at 12:00Z on 2016-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
1145 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
796 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

503 
WGUS54 KSHV 281547
FFWSHV
LAC021-049-059-061-073-111-127-282045-
/O.NEW.KSHV.FF.W.0076.160728T1547Z-160728T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1047 AM CDT THU JUL 28 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  CALDWELL PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHEASTERN UNION PARISH IN NORTH CENTRAL LOUISIANA...
  NORTHEASTERN LA SALLE PARISH IN NORTH CENTRAL LOUISIANA...
  EASTERN LINCOLN PARISH IN NORTH CENTRAL LOUISIANA...
  OUACHITA PARISH IN NORTH CENTRAL LOUISIANA...
  NORTHEASTERN WINN PARISH IN NORTH CENTRAL LOUISIANA...

* UNTIL 345 PM CDT

* AT 1046 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...
  MONROE...CLAIBORNE...WEST MONROE...COLUMBIA...
  BROWNSVILLE-BAWCOMVILLE...BROWNSVILLE-BAWCOM...SWARTZ...RICHWOOD...
  STERLINGTON...OLLA...CLARKS...GRAYSON...CHOUDRANT...CHATHAM...
  EROS...DOWNSVILLE...SIKES...LOCH LOMON...LUNA AND EUREKA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3209 9189 3207 9193 3193 9191 3193 9200
      3189 9201 3192 9254 3272 9257 3275 9206
      3269 9205 3271 9204 3271 9197 3266 9191
      3251 9190 3240 9200 3228 9203 3227 9199
      3219 9201 3220 9197 3217 9198 3216 9189

$$

20

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 7:49 AM CDTAreal Flood AdvisorySHVCaldwell, Winn3 hr
Jul 28, 9:10 AM CDTAreal Flood AdvisorySHVClaiborne, Webster3 hr
Jul 28, 9:47 AM CDTAreal Flood AdvisorySHVJackson, Lincoln, Ouachita, Union3 hr
Jul 28, 12:59 PM CDTFlash Flood WarningSHVBienville, Grant, Jackson, LaSalle, Lincoln, Natchitoches and 2 more5 hr
Jul 28, 1:10 PM CDTAreal Flood WarningSHVBienville, Bossier, Caddo, De Soto, Webster2 hr
Jul 28, 1:16 PM CDTSpecial Weather StatementSHVBossier, Caddo, Webster44 min
Jul 28, 4:37 PM CDTSpecial Weather StatementSHVSabine38 min
Jul 28, 5:55 PM CDTAreal Flood AdvisorySHVNatchitoches, Sabine2 hr

Nearby

Flash Flood Warnings in Louisiana, 2016Every 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.