Alert archive / Mississippi / Flash Flood Warnings in 2013

Flash Flood Warning 26, NWS Mobile, AL

July 4, 2013Greene County, Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Jul 4, 2013, 11:32 PM CDT for Greene County, Perry County, Wayne County, Mississippi. It was in force for 3 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
Jul 4, 2013, 11:32 PM CDT (04:32 UTC)
Expired
Jul 5, 2013, 2:30 AM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Greene County, MS, Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 100 km from the middle of the area, began a volume at 04:35 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 5, 12:10 AM CDTFLASH FLOOD4 Ne Sand Hill, MS11 RESCUED FROM HOMES. NUMEROUS ROADS UNDER WATER IN THE SAND HILL COMMUNITY.

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 00:00Z, 4.5 hours before the alert went out and 157 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 00:00Z on 2013-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 902 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 00:00Z on 2013-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
902 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1452 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

363 
WGUS54 KMOB 050432
FFWMOB
MSC041-111-153-050730-
/O.NEW.KMOB.FF.W.0026.130705T0432Z-130705T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1132 PM CDT THU JUL 4 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHEASTERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTH CENTRAL WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 230 AM CDT

* AT 1130 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
  SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM 4 MILES 
  EAST OF RICHTON TO 9 MILES EAST OF MULBERRY...MOVING TO THE 
  NORTHEAST AT 15 TO 20 MPH. RADAR ESTIMATES THAT 3 TO 5 INCHES OF 
  RAIN HAS FALLEN OVER THE WARNED AREA SINCE 10 PM CDT. AN 
  ADDITIONAL 2 TO 3 INCHES WITH ISOLATED HIGHER AMOUNTS WILL BE 
  POSSIBLE. THESE TORRENTIAL RAINS WILL LIKELY CAUSE FLASH FLOODING
  IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  STATE HIGHWAYS 42 AND 63...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

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

&&

LAT...LON 3157 8871 3142 8862 3130 8889 3142 8891

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 7:58 PM CDTAreal Flood AdvisoryMOBGreene, Wayne107 min
Jul 4, 9:22 PM CDTFlash Flood WarningMOBWayne3 hr
Jul 4, 11:14 PM CDTAreal Flood AdvisoryMOBGreene, Perry, Wayne3 hr
Jul 5, 12:12 AM CDTFlash Flood WarningMOBWayne3 hr

Nearby

Flash Flood Warnings in Mississippi, 2013Every flash flood warning in 2013

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.