Alert archive / Mississippi / Flash Flood Warnings in 2014

Flash Flood Warning 43, NWS Mobile, AL

August 9, 2014Greene County, Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Aug 9, 2014, 5:27 PM CDT for Greene County, Wayne County, Mississippi. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 9, 2014, 5:27 PM CDT (22:27 UTC)
Expired
Aug 9, 2014, 8:30 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Greene County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 91 km from the middle of the area, began a volume at 22:26 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.5 hours before the alert went out and 170 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, Slidell Radar S, LA at 12:00Z on 2014-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2688 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, Slidell Radar S, LA at 12:00Z on 2014-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
2688 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

301 
WGUS54 KMOB 092227
FFWMOB
MSC041-153-100130-
/O.NEW.KMOB.FF.W.0043.140809T2227Z-140810T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
527 PM CDT SAT AUG 9 2014

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 830 PM CDT

* AT 524 PM CDT...VERY HEAVY RAINFALL WAS INDICATED OVER THE
  WARNED AREA AND RADAR ESTIMATES SHOW 2 TO 4 INCHES OF RAINFALL
  HAS OCCURRED OVER THE PAST HOUR WITH ADDITIONAL RAINFALL AMOUNTS
  OF 1 TO 2 INCHES EXPECTED THROUGH 630 PM CDT. THIS WILL LIKELY
  CAUSE FLASH FLOODING IN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  STATE LINE...

LAT...LON 3149 8871 3152 8846 3151 8845 3135 8845
      3130 8870

$$
1 follow-up statement
748 
WGUS74 KMOB 100120
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
820 PM CDT SAT AUG 9 2014

MSC041-153-100131-
/O.EXP.KMOB.FF.W.0043.000000T0000Z-140810T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE MS-GREENE MS-
820 PM CDT SAT AUG 9 2014

...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 830 PM CDT
FOR NORTHEASTERN GREENE AND SOUTHEASTERN WAYNE COUNTIES...

AT 818 PM CDT...THE HEAVY RAINFALL THAT PROMPTED THE WARNING FOR
NORTHEASTERN GREENE AND SOUTHEASTERN WAYNE COUNTIES HAS ENDED...THUS
THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 830 PM CDT.
HOWEVER...PONDING OF WATER MAY STILL BE ENCOUNTERED.

LAT...LON 3149 8871 3152 8846 3151 8845 3135 8845
      3130 8870

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 4:35 PM CDTSevere Thunderstorm WarningMOBGreene, Wayne25 min
Aug 9, 5:03 PM CDTAreal Flood AdvisoryMOBGreene, Wayne117 min
Aug 9, 6:06 PM CDTAreal Flood AdvisoryMOBGeorge, Perry, Stone114 min

Nearby

Flash Flood Warnings in Mississippi, 2014Every 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.