Alert archive / Alabama / Flash Flood Warnings in 2020

Flash Flood Warning 17, NWS Mobile, AL

June 8, 20207 counties in Alabama

NWS Mobile, AL issued this flash flood warning at Jun 8, 2020, 1:42 AM CDT for 7 counties in 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: Jun 8, 2020, 1:42 AM CDT (06:42 UTC)
Expired: Jun 8, 2020, 7:45 AM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Butler County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 132 km from the middle of the area, began a volume at 06:41 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

Birmingham, AL (KBMX), launched 00:00Z, 6.7 hours before the alert went out and 132 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: 94 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1060 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

723 
WGUS54 KMOB 080642
FFWMOB
ALC013-025-035-039-041-099-131-081245-
/O.NEW.KMOB.FF.W.0017.200608T0642Z-200608T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
142 AM CDT Mon Jun 8 2020

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Butler County in south central Alabama...
  Central Conecuh County in south central Alabama...
  Northern Covington County in south central Alabama...
  Southwestern Crenshaw County in south central Alabama...
  Monroe County in south central Alabama...
  Wilcox County in south central Alabama...
  East Central Clarke County in southwestern Alabama...

* Until 745 AM CDT Monday.

* At 141 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Greenville, Monroeville, Evergreen, Camden, Frisco City, Peterman, 
  Georgiana, Pine Hill, McKenzie, Excel, Beatrice, Dozier, 
  Vredenburgh, Yellow Bluff, Pine Apple, Old Texas, Commerce, 
  Mixonville, Skinnerton and Riley.

Additional rainfall amounts of 2 to 4 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.

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

&&

LAT...LON 3213 8760 3213 8752 3226 8752 3227 8745
      3224 8739 3220 8736 3220 8733 3214 8728
      3214 8725 3212 8726 3209 8719 3205 8718
      3205 8686 3196 8686 3196 8645 3142 8620
      3143 8762

FLASH FLOOD...RADAR INDICATED

$$

MOB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 7:23 PM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Jun 7, 8:09 PM CDT	Special Marine Warning	MOB		66 min
Jun 7, 9:02 PM CDT	Flash Flood Warning	MOB	Mobile	6 hr
Jun 7, 9:47 PM CDT	Special Marine Warning	MOB		43 min
Jun 7, 9:50 PM CDT	River Flood Warning	MOB	Mobile	21 days
Jun 7, 10:38 PM CDT	Flash Flood Warning	MOB	Baldwin, Mobile, Washington	6 hr
Jun 7, 11:54 PM CDT	Coastal Flood Warning	MOB	Baldwin, Mobile	19 hr
Jun 8, 12:36 AM CDT	Flash Flood Warning	MOB	Baldwin, Choctaw, Clarke, Monroe, Washington	6 hr
Jun 8, 5:04 AM CDT	Areal Flood Warning	MOB	Baldwin, Mobile, Washington	12 hr
Jun 8, 6:18 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Jun 8, 7:09 AM CDT	Gale Warning	MOB		3 hr
Jun 8, 7:09 AM CDT	Small Craft Advisory	MOB		15 hr
Jun 8, 12:14 PM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Jun 8, 12:48 PM CDT	Special Marine Warning	MOB		87 min
Jun 8, 1:16 PM CDT	Special Weather Statement	MOB	Mobile	44 min
Jun 8, 1:57 PM CDT	High Surf Advisory	MOB	Baldwin, Mobile	14 hr

Nearby

Flash Flood Warnings in Alabama, 2020 Every flash flood warning in 2020

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.