Alert archive / Mississippi / Flash Flood Warnings in 2018

Flash Flood Warning 4, NWS Mobile, AL

April 14, 2018Greene County, Wayne County, Mississippi; Choctaw County, Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 14, 2018, 2:35 PM CDT for Greene County, Wayne County, Mississippi; Choctaw County, Washington County, Alabama. It was in force for 6 hr. 4 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
Apr 14, 2018, 2:35 PM CDT (19:35 UTC)
Expired
Apr 14, 2018, 8:30 PM CDT
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, Wayne County, MS

The radar

The Mobile radar (KMOB), 116 km from the middle of the area, began a volume at 19:36 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
Apr 14, 3:50 PM CDTHEAVY RAIN 4.52Millry, ALPERSONAL WEATHER STATION IN MILLRY, AL REPORTS 4.52 INCHES SINCE 1730Z.
Apr 14, 5:05 PM CDTHEAVY RAIN 6.252 Ene Earlville, ALCOUNTY EM REPORTED OVER 6 INCHES OF RAIN IN THE FOUR POINTS AREA SINCE 19Z
Apr 14, 7:17 PM CDTFLASH FLOOD5 Ne Fruitdale, ALWATER OVER THE ROAD ON CR 1 BETWEEN FRUITDALE AND CHATOM
Apr 14, 7:19 PM CDTFLASH FLOODChatom, ALCOUNTY EM REPORTS WATER OVER THE HIGHWAY 56 NEAR CHATOM

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, 7.6 hours before the alert went out and 187 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 2018-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1210 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2018-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 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
1210 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
1.8
Supercell composite
8.4

Open this sounding in Storm Lab

The text

As transmitted.

149 
WGUS54 KMOB 141935
FFWMOB
ALC023-129-MSC041-153-150130-
/O.NEW.KMOB.FF.W.0004.180414T1935Z-180415T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
235 PM CDT SAT APR 14 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...
  Southeastern Wayne County in southeastern Mississippi...
  Northeastern Greene County in southeastern Mississippi...

* Until 830 PM CDT.

* At 234 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Two to three inches of rain 
  have already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Chatom, Millry, State Line, Buckatunna, Silas and Fruitdale. 

LAT...LON 3194 8813 3187 8813 3185 8816 3184 8816
      3182 8818 3177 8816 3175 8814 3176 8813
      3158 8813 3129 8833 3118 8865 3181 8845

$$
2 follow-up statements
620 
WGUS74 KMOB 142217
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
517 PM CDT SAT APR 14 2018

ALC023-129-MSC041-153-150130-
/O.CON.KMOB.FF.W.0004.000000T0000Z-180415T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Washington AL-Wayne MS-Greene MS-
517 PM CDT SAT APR 14 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHWESTERN CHOCTAW...NORTHWESTERN WASHINGTON...SOUTHEASTERN WAYNE
AND NORTHEASTERN GREENE COUNTIES...

At 515 PM CDT, Doppler radar indicates that showers and occasional 
thunderstorms continue to move across the warned area, and 
additional heavy rain is likely.  Radar rainfall estimates show that 
2.5 to over 6 inches of rain has fallen over the area.  Flash 
flooding remains likely as additional thunderstorms move across the 
area through early this evening.

Some locations that will experience flooding include...
Chatom, Millry, State Line, Buckatunna, Silas and Fruitdale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3194 8813 3187 8813 3185 8816 3184 8816
      3182 8818 3177 8816 3175 8814 3176 8813
      3158 8813 3129 8833 3118 8865 3181 8845

$$
417 
WGUS74 KMOB 150051
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
751 PM CDT SAT APR 14 2018

ALC023-129-MSC041-153-150130-
/O.CON.KMOB.FF.W.0004.000000T0000Z-180415T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Washington AL-Wayne MS-Greene MS-
751 PM CDT SAT APR 14 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHWESTERN CHOCTAW...NORTHWESTERN WASHINGTON...SOUTHEASTERN WAYNE
AND NORTHEASTERN GREENE COUNTIES...

At 747 PM CDT, Doppler radar indicated that the heavy rain has ended 
although light to moderate rain will continue over the area for a 
few more hours. The Flash Flood Warning will eventually be replaced 
with an Areal Flood Warning due to water likely over several 
roadways in the area as well as ponding of water in low lying areas. 
Please heed any road closures.

Some locations that will experience flooding include...
Chatom, Millry, State Line, Buckatunna, Silas and Fruitdale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3194 8813 3187 8813 3185 8816 3184 8816
      3182 8818 3177 8816 3175 8814 3176 8813
      3158 8813 3129 8833 3118 8865 3181 8845

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 8:20 PM CDTRiver Flood WarningMOBGeorge, Greene, Jackson14 hr
Apr 14, 3:19 AM CDTWind AdvisoryMOBGeorge, Greene, Perry, Stone, Wayne18 hr
Apr 14, 10:58 AM CDTSevere Thunderstorm WarningMOBGreene, Perry, Wayne62 min
Apr 14, 11:50 AM CDTSevere Thunderstorm WarningMOBPerry, Stone55 min
Apr 14, 11:51 AM CDTAreal Flood AdvisoryMOBGreene, Perry, Wayne3 hr
Apr 14, 11:59 AM CDTSevere Thunderstorm WarningMOBGreene, Wayne61 min
Apr 14, 12:40 PM CDTSpecial Weather StatementMOBPerry50 min
Apr 14, 1:00 PM CDTAreal Flood AdvisoryMOBGreene, Perry, Stone3 hr
Apr 14, 1:50 PM CDTFlash Flood WarningMOBPerry, Stone6 hr
Apr 14, 1:54 PM CDTFlash Flood WarningMOBGreene, Perry, Wayne6 hr
Apr 14, 3:47 PM CDTSpecial Weather StatementMOBGeorge58 min
Apr 14, 3:50 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone6 hr
Apr 14, 5:05 PM CDTSpecial Weather StatementMOBStone55 min
Apr 14, 6:03 PM CDTSpecial Weather StatementMOBGeorge, Greene57 min
Apr 14, 6:57 PM CDTSevere Thunderstorm WarningMOBGeorge20 min
Apr 14, 4:09 AM CDTGale WarningMOB18 hr
Apr 14, 4:09 AM CDTSmall Craft AdvisoryMOB63 hr
Apr 14, 1:07 PM CDTSpecial Weather StatementMOBChoctaw53 min
Apr 14, 2:00 PM CDTAreal Flood AdvisoryMOBChoctaw, Clarke, Washington3 hr
Apr 14, 3:46 PM CDTFlash Flood WarningMOBClarke, Washington6 hr
Apr 14, 4:53 PM CDTFlash Flood WarningMOBWashington6 hr
Apr 14, 5:34 PM CDTAreal Flood AdvisoryMOBClarke, Washington, Wilcox3 hr
Apr 14, 6:14 PM CDTFlash Flood WarningMOBClarke, Washington, Wilcox6 hr

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.