Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 7, NWS Mobile, AL

April 3, 2017George County, Greene County, Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Apr 3, 2017, 7:04 AM CDT for George County, Greene County, Stone 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
Apr 3, 2017, 7:04 AM CDT (12:04 UTC)
Expired
Apr 3, 2017, 10:00 AM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties George County, MS, Greene County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 58 km from the middle of the area, began a volume at 12:06 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, 0.1 hours before the alert went out and 109 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 2017-04-03Temperature 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, Slidell Radar S, LA at 12:00Z on 2017-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -464 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
555 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
-464 m²/s²
0-3 km storm-relative helicity
-530 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

509 
WGUS54 KMOB 031204
FFWMOB
MSC039-041-131-031500-
/O.NEW.KMOB.FF.W.0007.170403T1204Z-170403T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
704 AM CDT MON APR 3 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  George County in southeastern Mississippi...
  Southern Greene County in southeastern Mississippi...
  Eastern Stone County in southeastern Mississippi...

* Until 1000 AM CDT

* At 703 AM CDT, 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...
  Lucedale.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3091 8894 3091 8883 3107 8884 3108 8843
      3074 8841 3073 8888 3068 8889 3068 8909

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 4:53 AM CDTSpecial Weather StatementMOBGreene, Perry52 min
Apr 3, 5:10 AM CDTSevere Thunderstorm WarningMOBGreene, Perry, Wayne50 min
Apr 3, 5:20 AM CDTSevere Thunderstorm WarningMOBPerry, Stone40 min
Apr 3, 5:22 AM CDTAreal Flood AdvisoryMOBWayne3 hr
Apr 3, 5:57 AM CDTSevere Thunderstorm WarningMOBGeorge, Greene, Stone48 min
Apr 3, 6:03 AM CDTAreal Flood AdvisoryMOBGeorge, Greene, Perry, Stone3 hr
Apr 3, 6:43 AM CDTSevere Thunderstorm WarningMOBGeorge, Greene, Stone47 min
Apr 3, 7:26 AM CDTSevere Thunderstorm WarningMOBGeorge49 min
Apr 3, 10:59 AM CDTRiver Flood WarningMOBGeorge, Greene, Wayne9 days

Nearby

Flash Flood Warnings in Mississippi, 2017Every flash flood warning in 2017

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.