Alert archive / Alabama / Flash Flood Warnings in 2019

Flash Flood Warning 22, NWS Mobile, AL

October 25, 2019Choctaw County, Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at Oct 25, 2019, 7:45 PM CDT for Choctaw County, Washington County, Alabama. It was in force for 6 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 25, 2019, 7:45 PM CDT (00:45 UTC)
Expired: Oct 26, 2019, 1:45 AM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Choctaw County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 00:43 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 00:00Z, 0.8 hours before the alert went out and 199 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 504 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

557 
WGUS54 KMOB 260045
FFWMOB
ALC023-129-260645-
/O.NEW.KMOB.FF.W.0022.191026T0045Z-191026T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
745 PM CDT Fri Oct 25 2019

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  South central Choctaw County in southwestern Alabama...
  Central Washington County in southwestern Alabama...

* Until 145 AM CDT Saturday.

* At 744 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. Up to three inches of rain have already fallen, with 
  another inch or two expected in the next 2 hours. Flash flooding 
  is expected to begin shortly.

* Some locations that will experience flooding include...
  Chatom, Tibbie and Millry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3175 8810 3168 8808 3166 8808 3166 8809
      3163 8808 3127 8810 3127 8835 3175 8834

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 8:12 PM CDT	Tornado Warning	MOB	Choctaw, Clarke	33 min
Oct 25, 8:53 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	67 min
Oct 25, 8:54 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke	6 hr
Oct 25, 9:15 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	45 min
Oct 25, 9:59 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	31 min
Oct 26, 1:51 AM CDT	Areal Flood Warning	MOB	Choctaw, Clarke, Washington	6 hr
Oct 26, 5:56 AM CDT	Wind Advisory	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more	7 hr
Oct 26, 7:36 AM CDT	Special Marine Warning	MOB		114 min
Oct 26, 7:52 AM CDT	Coastal Flood Advisory	MOB	Baldwin, Mobile	10 hr
Oct 26, 7:59 AM CDT	Special Weather Statement	MOB	Mobile	46 min
Oct 26, 8:28 AM CDT	Severe Thunderstorm Warning	MOB	Mobile, Washington	26 min
Oct 26, 8:43 AM CDT	Special Weather Statement	MOB	Baldwin, Clarke, Mobile, Washington	47 min
Oct 26, 9:01 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	32 min
Oct 26, 9:22 AM CDT	Special Marine Warning	MOB		83 min
Oct 26, 9:29 AM CDT	Special Weather Statement	MOB	Baldwin	61 min
Oct 26, 10:26 AM CDT	Special Weather Statement	MOB	Baldwin	49 min
Oct 26, 10:52 AM CDT	Special Marine Warning	MOB		83 min
Oct 26, 12:32 PM CDT	Special Marine Warning	MOB		37 min
Oct 26, 1:14 PM CDT	Special Marine Warning	MOB		91 min
Oct 26, 1:50 PM CDT	Special Marine Warning	MOB		85 min

Nearby

Flash Flood Warnings in Alabama, 2019 Every flash flood warning in 2019

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.