Alert archive / Mississippi / Flash Flood Warnings in 2018

Flash Flood Warning 33, NWS Mobile, AL

December 27, 2018Choctaw County, Washington County, Alabama; Greene County, Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Dec 27, 2018, 5:27 PM CST for Choctaw County, Washington County, Alabama; Greene County, Perry County, Wayne County, Mississippi. It was in force for 6 hr. 8 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
Dec 27, 2018, 5:27 PM CST (23:27 UTC)
Expired
Dec 27, 2018, 11:30 PM CST
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Choctaw County, AL, Washington County, AL, Greene County, MS, Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 116 km from the middle of the area, began a volume at 23:26 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.

What was reported inside it

TimeReportWhereRemark
Dec 27, 6:05 PM CSTFLASH FLOODWaynesboro, MSNUMEROUS FLOODED STREETS IN WAYNESBORO (INCLUDING WAYNE, SOUTH, COURT, AND BLANKS AND HOGAN STREETS).
Dec 27, 6:30 PM CSTFLASH FLOODMulberry, MSAT LEAST 14 HOUSES DAMAGED DUE TO FLOOD WATERS WITH 17 PEOPLE DISPLACED DUE TO FLOODING (COUNTY-WIDE).
Dec 27, 6:35 PM CSTFLASH FLOOD5 W Piave, MSNUMEROUS REPORTS OF FLOODED ROADS (PIAVE CHURCH, MANNING HILL, AND UNION ROADS) IN THE SAND HILL AND PIAVE AREAS OF GREENE COUNTY. SOME ROADS CLOSED DUE TO FLOODING.
Dec 27, 7:30 PM CSTFLASH FLOODRichton, MSWATER RESCUES UNDERWAY AT APARTMENTS IN RICHTON, MS.
Dec 27, 9:00 PM CSTFLASH FLOODRichton, MSREPORTS OF KNEE DEEP WATER IN BUSINESSES IN RICHTON. PICTURES VIA SOCIAL MEDIA.
Dec 27, 9:30 PM CSTFLASH FLOOD3 Nw Piave, MSNUMEROUS ROAD CLOSURES DUE TO FLOODING IN NORTHERN GREENE COUNTY.
Dec 27, 10:00 PM CSTFLASH FLOODRichton, MSAT LEAST A DOZEN BUSINESSES AND OVER A DOZEN RESIDENCES FLOODED IN RICHTON. NUMEROUS ROADS FLOODED AND SOME DAMAGED IN THE NORTHERN HALF OF PERRY COUNTY, ROUGHLY NORTH OF HIGHWAY 98.
Dec 27, 10:13 PM CSTHEAVY RAIN 11.5Clara, MSREPORT OF 11.5 INCHES OF RAIN (SO FAR) IN THE CLARA 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 12:00Z, 11.5 hours before the alert went out and 161 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 2018-12-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2018-12-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 466 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
591 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
466 m²/s²
0-3 km storm-relative helicity
893 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

447 
WGUS54 KMOB 272327
FFWMOB
ALC023-129-MSC041-111-153-280530-
/O.NEW.KMOB.FF.W.0033.181227T2327Z-181228T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
527 PM CST THU DEC 27 2018

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southwestern Choctaw County in southwestern Alabama...
  Northwestern Washington County in southwestern Alabama...
  Northeastern Perry County in southeastern Mississippi...
  Southeastern Wayne County in southeastern Mississippi...
  Northwestern Greene County in southeastern Mississippi...

* Until 1130 PM CST Thursday.

* At 525 PM CST, Doppler radar indicated heavy rain across the 
  warned area. Two to four inches of rain have already fallen. Flash 
  flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Waynesboro, Richton, Clara, Buckatunna and Silas. 

Additional rainfall amounts of 2 to 3 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.

&&

LAT...LON 3187 8857 3189 8848 3191 8847 3181 8818
      3180 8818 3111 8885 3128 8903

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 26, 9:44 PM CSTRiver Flood WarningMOBEscambia15 days
Dec 27, 8:29 AM CSTWind AdvisoryMOBBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more10 hr
Dec 27, 10:28 AM CSTGale WarningMOB4 hr
Dec 27, 10:28 AM CSTSmall Craft AdvisoryMOB23 hr
Dec 27, 1:17 PM CSTSpecial Weather StatementMOBChoctaw43 min
Dec 27, 3:49 PM CSTSpecial Weather StatementMOBChoctaw56 min
Dec 27, 4:27 PM CSTAreal Flood AdvisoryMOBChoctaw3 hr
Dec 27, 4:36 PM CSTSpecial Weather StatementMOBMarengo39 min
Dec 27, 5:01 PM CSTSpecial Weather StatementMOBClarke, Washington, Wilcox59 min
Dec 27, 5:07 PM CSTAreal Flood AdvisoryMOBChoctaw, Clarke, Washington3 hr
Dec 27, 11:05 AM CSTRiver Flood WarningMOBGeorge, Greene, Perry15 days
Dec 27, 11:11 AM CSTRiver Flood WarningMOBGeorge, Greene, Wayne17 days
Dec 27, 3:09 PM CSTSpecial Weather StatementMOBWayne51 min
Dec 27, 4:12 PM CSTSpecial Weather StatementMOBPerry48 min

Nearby

Flash Flood Warnings in Mississippi, 2018Flash Flood Warnings in Alabama, 2018Every flash flood warning in 2018

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.