Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 88, NWS Mobile, AL

October 22, 2017George County, Greene County, Mississippi; Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Oct 22, 2017, 12:19 PM CDT for George County, Greene County, Mississippi; Mobile County, Alabama. It was in force for 2 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
Oct 22, 2017, 12:19 PM CDT (17:19 UTC)
Expired
Oct 22, 2017, 2:45 PM CDT
In force
2 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Mobile County, AL, George County, MS, Greene County, MS

The radar

The Mobile radar (KMOB), 23 km from the middle of the area, began a volume at 17:21 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

Jackson, MS (KJAN), launched 12:00Z, 5.3 hours before the alert went out and 230 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 2017-10-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 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 12:00Z on 2017-10-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
72 J/kg
Mixed-layer CIN
-332 J/kg
Mixed-layer LCL
1526 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

373 
WGUS54 KMOB 221719
FFWMOB
ALC097-MSC039-041-221945-
/O.NEW.KMOB.FF.W.0088.171022T1719Z-171022T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1219 PM CDT SUN OCT 22 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Northwestern Mobile County in southwestern Alabama...
  Eastern George County in southeastern Mississippi...
  Southeastern Greene County in southeastern Mississippi...

* Until 245 PM CDT

* At 1218 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Citronelle, Chunchula, Gulfcrest, Semmes, Tanner Williams, Mobile
  Regional Airport and Wilmer.

Additional rainfall amounts of one to two 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.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3074 8841 3074 8847 3093 8853 3109 8844
      3111 8833 3114 8815 3061 8821 3056 8840

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 22, 10:28 AM CDTAreal Flood AdvisoryMOBStone3 hr
Oct 22, 11:01 AM CDTAreal Flood AdvisoryMOBGeorge3 hr
Oct 22, 11:34 AM CDTFlash Flood WarningMOBGeorge3 hr
Oct 22, 3:22 PM CDTAreal Flood WarningMOBGeorge, Greene3 hr
Oct 22, 11:28 AM CDTSpecial Weather StatementMOBMobile47 min
Oct 22, 12:47 PM CDTAreal Flood AdvisoryMOBMobile118 min
Oct 22, 1:00 PM CDTTornado Warning Tornado observedMOBBaldwin2 min
Oct 22, 1:01 PM CDTTornado Warning Tornado observedMOBBaldwin29 min
Oct 22, 1:36 PM CDTTornado WarningMOBBaldwin24 min
Oct 22, 1:39 PM CDTTornado WarningMOBBaldwin34 min
Oct 22, 1:59 PM CDTFlash Flood WarningMOBMobile3 hr
Oct 22, 2:05 PM CDTSpecial Marine WarningMOB55 min
Oct 22, 2:11 PM CDTTornado WarningMOBBaldwin49 min
Oct 22, 2:39 PM CDTTornado WarningMOBBaldwin36 min
Oct 22, 2:41 PM CDTTornado WarningMOBBaldwin23 min
Oct 22, 3:01 PM CDTSpecial Marine WarningMOB44 min
Oct 22, 3:35 PM CDTAreal Flood AdvisoryMOBBaldwin, Escambia3 hr
Oct 22, 3:38 PM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Oct 22, 3:52 PM CDTSpecial Marine WarningMOB23 min
Oct 22, 3:58 PM CDTTornado Warning Tornado observedMOBBaldwin47 min
Oct 22, 4:25 PM CDTAreal Flood WarningMOBBaldwin, Mobile6 hr
Oct 22, 4:34 PM CDTSpecial Marine WarningMOB56 min
Oct 22, 5:06 PM CDTAreal Flood AdvisoryMOBMobile114 min
Oct 22, 5:15 PM CDTFlash Flood WarningMOBBaldwin, Mobile6 hr
Oct 22, 5:29 PM CDTSpecial Marine WarningMOB61 min
Oct 22, 5:31 PM CDTAreal Flood AdvisoryMOBButler, Conecuh, Escambia3 hr
Oct 22, 5:47 PM CDTRiver Flood WarningMOBBaldwin60 hr
Oct 22, 5:48 PM CDTRiver Flood WarningMOBBaldwin31 hr

Nearby

Flash Flood Warnings in Mississippi, 2017Flash Flood Warnings in Alabama, 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.