Alert archive / Mississippi / Flash Flood Warnings in 2016

Flash Flood Warning 77, NWS Jackson, MS

March 12, 201623 counties in Mississippi; Madison Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Mar 12, 2016, 4:31 PM CST for 23 counties in Mississippi; Madison Parish, Louisiana. It was in force for 5 hr. 2 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
Mar 12, 2016, 4:31 PM CST (22:31 UTC)
Expired
Mar 12, 2016, 9:30 PM CST
In force
5 hr
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Flood severity
None
All 24 counties

Madison Parish, LA, Bolivar County, MS, Carroll County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Leflore County, MS, Lincoln County, MS, Madison County, MS, Rankin County, MS, Sharkey County, MS, Simpson County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 156 km from the middle of the area, began a volume at 22:31 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
Mar 12, 8:30 PM CSTFLOODGunnison, MSSCATTERED ROADWAYS WERE STILL HAVING FLOODING ISSUES ACROSS THE COUNTY.
Mar 12, 8:40 PM CSTFLOODIndianola, MSNUMEROUS ROADS HAD FLOODING ISSUES ACROSS THE COUNTY WITH SOME ROADS CLOSED.

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

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.5 hours before the alert went out and 148 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, Jackson, MS at 12:00Z on 2016-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 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, Jackson, MS at 12:00Z on 2016-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897Sfc1 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
14 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

730 
WGUS54 KJAN 122231
FFWJAN
LAC065-MSC011-015-021-029-037-043-049-051-053-055-063-065-077-083-
085-089-121-125-127-133-149-151-163-130330-
/O.NEW.KJAN.FF.W.0077.160312T2231Z-160313T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
431 PM CST SAT MAR 12 2016

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL MADISON PARISH IN NORTHEASTERN LOUISIANA...
  COPIAH COUNTY IN CENTRAL MISSISSIPPI...
  LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  FRANKLIN COUNTY IN SOUTHWESTERN MISSISSIPPI...
  YAZOO COUNTY IN CENTRAL MISSISSIPPI...
  WESTERN RANKIN COUNTY IN CENTRAL MISSISSIPPI...
  WARREN COUNTY IN WEST CENTRAL MISSISSIPPI...
  SHARKEY COUNTY IN WEST CENTRAL MISSISSIPPI...
  WESTERN GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...
  WESTERN SIMPSON COUNTY IN CENTRAL MISSISSIPPI...
  BOLIVAR COUNTY IN NORTHWESTERN MISSISSIPPI...
  WESTERN CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI...
  CLAIBORNE COUNTY IN SOUTHWESTERN MISSISSIPPI...
  EASTERN WASHINGTON COUNTY IN NORTHWESTERN MISSISSIPPI...
  SUNFLOWER COUNTY IN NORTHWESTERN MISSISSIPPI...
  MADISON COUNTY IN CENTRAL MISSISSIPPI...
  HINDS COUNTY IN CENTRAL MISSISSIPPI...
  LINCOLN COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  EASTERN ISSAQUENA COUNTY IN WEST CENTRAL MISSISSIPPI...
  HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI...
  WESTERN JEFFERSON DAVIS COUNTY IN SOUTH CENTRAL MISSISSIPPI...
  LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI...
  EASTERN JEFFERSON COUNTY IN SOUTHWESTERN MISSISSIPPI...
  HOLMES COUNTY IN CENTRAL MISSISSIPPI...

* UNTIL 930 PM CST
    
* AT 430 PM CST...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  JACKSON...CLINTON...PEARL...MADISON...RIDGELAND...VICKSBURG...
  BRANDON...GREENWOOD...CANTON...BROOKHAVEN...CLEVELAND...BYRAM...
  YAZOO CITY...INDIANOLA...FLOWOOD...RICHLAND...CRYSTAL SPRINGS...
  LELAND...HAZLEHURST AND RULEVILLE.

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 3412 9066 3399 9066 3399 9045 3381 9045
      3381 9018 3370 9030 3369 9029 3390 8983
      3288 8996 3139 8995 3135 9101 3354 9088
      3353 9117 3370 9116 3368 9103 3378 9114
      3378 9099 3397 9109 3403 9089 3412 9095

$$

17
1 follow-up statement
099 
WGUS74 KJAN 130030
FFSJAN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
630 PM CST SAT MAR 12 2016

LAC065-MSC011-015-021-029-037-043-049-051-053-055-063-065-077-083-
085-089-121-125-127-133-149-151-163-130330-
/O.CON.KJAN.FF.W.0077.000000T0000Z-160313T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON LA-COPIAH MS-LAWRENCE MS-FRANKLIN MS-YAZOO MS-RANKIN MS-
WARREN MS-SHARKEY MS-GRENADA MS-SIMPSON MS-BOLIVAR MS-CARROLL MS-
CLAIBORNE MS-WASHINGTON MS-SUNFLOWER MS-MADISON MS-HINDS MS-
LINCOLN MS-ISSAQUENA MS-HUMPHREYS MS-JEFFERSON DAVIS MS-LEFLORE MS-
JEFFERSON MS-HOLMES MS-
630 PM CST SAT MAR 12 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CST FOR
EAST CENTRAL MADISON PARISH...COPIAH...LAWRENCE...FRANKLIN...YAZOO...
WESTERN RANKIN...WARREN...SHARKEY...WESTERN GRENADA...WESTERN
SIMPSON...BOLIVAR...WESTERN CARROLL...CLAIBORNE...EASTERN
WASHINGTON...SUNFLOWER...MADISON...HINDS...LINCOLN...EASTERN
ISSAQUENA...HUMPHREYS...WESTERN JEFFERSON DAVIS...LEFLORE...EASTERN
JEFFERSON AND HOLMES COUNTIES...

AT 628 PM CST...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...
JACKSON...CLINTON...PEARL...MADISON...RIDGELAND...VICKSBURG...
BRANDON...GREENWOOD...CANTON...BROOKHAVEN...CLEVELAND...BYRAM...YAZOO
CITY...INDIANOLA...FLOWOOD...RICHLAND...CRYSTAL SPRINGS...LELAND...
HAZLEHURST AND RULEVILLE.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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 3412 9066 3399 9066 3399 9045 3381 9045
      3381 9018 3370 9030 3369 9029 3390 8983
      3288 8996 3139 8995 3135 9101 3354 9088
      3353 9117 3370 9116 3368 9103 3378 9114
      3378 9099 3397 9109 3403 9089 3412 9095

$$

17

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 6:08 PM CSTAreal Flood WarningJANAttala, Bolivar, Carroll, Grenada, Holmes, Humphreys and 4 more24 hr
Mar 11, 6:13 PM CSTAreal Flood WarningJANClarke, Covington, Forrest, Jasper, Jefferson Davis, Jones and 3 more24 hr
Mar 11, 6:18 PM CSTAreal Flood WarningJANChoctaw, Kemper, Lauderdale, Neshoba, Newton, Noxubee and 2 more24 hr
Mar 12, 8:29 AM CSTAreal Flood WarningJANIssaquena, Jefferson, Sharkey, Warren, Washington9 hr
Mar 12, 11:27 AM CSTRiver Flood WarningJANLauderdale, Newton16 hr
Mar 12, 3:47 PM CSTFlash Flood WarningJANAdams, Claiborne, Franklin, Jefferson5 hr
Mar 12, 4:00 PM CSTFlash Flood WarningJANClaiborne, Issaquena, Sharkey, Warren, Washington5 hr

Nearby

Flash Flood Warnings in Mississippi, 2016Flash 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.