Alert archive / Alabama / Flash Flood Watches in 2021

Flash Flood Watch 1, NWS Mobile, AL

March 16, 2021Okaloosa County, Santa Rosa County, Florida; 8 counties in Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this flash flood watch at Mar 16, 2021, 11:28 AM CDT for Okaloosa County, Santa Rosa County, Florida; 8 counties in Alabama; Wayne County, Mississippi. It took effect at Mar 16, 2021, 1:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Mar 16, 2021, 11:28 AM CDT (16:28 UTC)
In effect from: Mar 16, 2021, 1:00 PM CDT
Expired: Mar 16, 2021, 11:29 PM CDT
In force: 10 hr
Issued by: NWS Mobile, AL
Flood severity: None

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, Okaloosa County, FL, Santa Rosa County, FL, Wayne County, MS

The radar

The Mobile radar (KMOB), 123 km from the middle of the area, began a volume at 16:30 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 12:00Z, 4.5 hours before the alert went out and 195 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: 181 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 623 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

625 
WGUS64 KMOB 161628
FFAMOB

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mobile AL
1128 AM CDT Tue Mar 16 2021

ALZ051>058-FLZ204-206-MSZ067-170000-
/O.NEW.KMOB.FF.A.0001.210316T1800Z-210317T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Santa Rosa Coastal-Okaloosa Coastal-Wayne-
Including the cities of Chatom, Jackson, Pine Hill, Homewood,
Greenville, Wright, Niceville, Fort Walton Beach, Butler,
Thomasville, Lisman, Evergreen, Grove Hill, Bagdad, Silas,
Brantley, Monroeville, Luverne, Eglin AFB, Waynesboro, Gulf
Breeze, Navarre, Millry, Valparaiso, Destin, Camden, and Seminole
1128 AM CDT Tue Mar 16 2021

...FLASH FLOOD WATCH IN EFFECT UNTIL 7 PM CDT THIS EVENING...

The National Weather Service in Mobile has issued a

* Flash Flood Watch for Portions of Alabama, including the following 
  areas, Butler, Choctaw, Clarke, Conecuh, Crenshaw, Monroe, 
  Washington and Wilcox. Portions of northwest Florida, including 
  the following areas, Okaloosa Coastal and Santa Rosa Coastal. 
  Portions of southeast Mississippi, including the following area, 
  Wayne.

* Until 7 PM CDT this evening.

* Showers and thunderstorms will continue to develop and move over 
  the same areas that have already received several inches of 
  rainfall late last night into early this morning. This will 
  exacerbate ongoing flooding conditions and initiate new flash 
  flooding as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

JLH

3 follow-up statements

008 
WGUS64 KMOB 161635
FFAMOB

Flood Watch
National Weather Service Mobile AL
1135 AM CDT Tue Mar 16 2021

FLZ204-206-161745-
/O.CAN.KMOB.FF.A.0001.210316T1800Z-210317T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Santa Rosa Coastal-Okaloosa Coastal-
Including the cities of Niceville, Eglin AFB, Seminole, Bagdad,
Valparaiso, Destin, Wright, Gulf Breeze, Fort Walton Beach, and
Navarre
1135 AM CDT Tue Mar 16 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for a portion of northwest Florida, including 
the following areas, Okaloosa Coastal and Santa Rosa Coastal. has 
been cancelled.

The Flood Watch is cancelled.

$$

ALZ051>058-MSZ067-170000-
/O.CON.KMOB.FF.A.0001.210316T1800Z-210317T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Wayne-
Including the cities of Chatom, Evergreen, Grove Hill, Millry,
Silas, Homewood, Waynesboro, Greenville, Brantley, Camden, Pine
Hill, Monroeville, Butler, Jackson, Thomasville, Luverne, and
Lisman
1135 AM CDT Tue Mar 16 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

The Flash Flood Watch continues for

* Portions of Alabama, including the following areas, Butler, 
  Choctaw, Clarke, Conecuh, Crenshaw, Monroe, Washington and Wilcox. 
  Portions of southeast Mississippi, including the following area, 
  Wayne.

* Until 7 PM CDT this evening.

* Showers and thunderstorms will continue to developand move over 
  the same areas that have already received several inches of 
  rainfall late last night into early this morning. Additional 
  rainfall amounts of 1 to 3 inches will be possible across these 
  areas through this afternoon and this will exacerbate ongoing 
  flooding conditions and initiate additional areas of flash 
  flooding as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

JLH

698 
WGUS64 KMOB 162129
FFAMOB

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mobile AL
429 PM CDT Tue Mar 16 2021

ALZ051>058-MSZ067-170500-
/O.EXT.KMOB.FF.A.0001.000000T0000Z-210317T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Wayne-
Including the cities of Chatom, Evergreen, Grove Hill, Millry,
Silas, Homewood, Waynesboro, Greenville, Brantley, Camden, Pine
Hill, Monroeville, Butler, Jackson, Thomasville, Luverne, and
Lisman
429 PM CDT Tue Mar 16 2021

...FLASH FLOOD WATCH NOW IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

The Flash Flood Watch is now in effect for

* Portions of Alabama, including the following areas, Butler, 
  Choctaw, Clarke, Conecuh, Crenshaw, Monroe, Washington and Wilcox. 
  Portions of southeast Mississippi, including the following area, 
  Wayne.

* Until Midnight CDT tonight.

* Showers and thunderstorms will continue to develop and move over 
  the watch area through this evening. Much of this rain will move 
  across the same areas that have already received several inches of 
  rainfall late last night into this afternoon. The heaviest 
  rainfall so far has occurred across Wayne, Choctaw, and Wilcox 
  Counties. Additional rainfall amounts of 2 to 4 inches will be 
  possible across the watch area through this evening and this will 
  exacerbate ongoing flooding conditions and possibly initiate 
  additional areas of flash flooding as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

719 
WGUS64 KMOB 170429
FFAMOB

Flood Watch
National Weather Service Mobile AL
1129 PM CDT Tue Mar 16 2021

ALZ051>058-MSZ067-170530-
/O.CAN.KMOB.FF.A.0001.000000T0000Z-210317T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Wayne-
Including the cities of Chatom, Evergreen, Grove Hill, Millry,
Silas, Homewood, Waynesboro, Greenville, Brantley, Camden, Pine
Hill, Monroeville, Butler, Jackson, Thomasville, Luverne, and
Lisman
1129 PM CDT Tue Mar 16 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for Portions of Alabama, including the 
following areas, Butler, Choctaw, Clarke, Conecuh, Crenshaw, Monroe, 
Washington and Wilcox. Portions of southeast Mississippi, including 
the following area, Wayne. has been cancelled.

The Flood Watch is cancelled. Please continue to heed remaining road 
closures. A new Flash Flood Watch could be issued later tonight for 
areas that received the heavy rainfall earlier on Tuesday for an 
upcoming round of potentially excessive precipitation.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 4:53 PM CDT	Dense Fog Advisory	MOB	Escambia, Okaloosa, Santa Rosa	17 hr
Mar 16, 4:53 PM CDT	Wind Advisory	MOB	Escambia, Okaloosa, Santa Rosa	28 hr
Mar 16, 12:36 AM CDT	Special Weather Statement	MOB	Choctaw	39 min
Mar 16, 1:17 AM CDT	Special Weather Statement	MOB	Choctaw	43 min
Mar 16, 1:38 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	52 min
Mar 16, 2:31 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	28 min
Mar 16, 3:44 AM CDT	Marine Dense Fog Advisory	MOB		9 hr
Mar 16, 3:52 AM CDT	Special Weather Statement	MOB	Choctaw	23 min
Mar 16, 4:24 AM CDT	Special Weather Statement	MOB	Wilcox	66 min
Mar 16, 4:40 AM CDT	Severe Thunderstorm Warning	MOB	Wilcox	30 min
Mar 16, 5:48 AM CDT	Special Weather Statement	MOB	Wilcox	27 min
Mar 16, 9:24 AM CDT	Flash Flood Warning	MOB	Choctaw, Clarke	8 hr
Mar 16, 9:29 AM CDT	Flash Flood Warning	MOB	Wilcox	8 hr
Mar 16, 10:10 AM CDT	Special Weather Statement	MOB	Clarke	50 min
Mar 16, 10:41 AM CDT	Special Weather Statement	MOB	Clarke	49 min
Mar 16, 11:09 AM CDT	Special Weather Statement	MOB	Wilcox	51 min
Mar 16, 11:42 AM CDT	Special Weather Statement	MOB	Wilcox	48 min
Mar 16, 12:11 PM CDT	Special Weather Statement	MOB	Butler	34 min
Mar 16, 12:47 PM CDT	Special Weather Statement	MOB	Butler, Crenshaw	58 min
Mar 16, 1:11 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	49 min
Mar 16, 2:00 PM CDT	Special Weather Statement	MOB	Crenshaw	15 min
Mar 16, 4:47 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Washington, Wilcox	6 hr
Mar 16, 4:48 PM CDT	Marine Dense Fog Advisory	MOB		17 hr
Mar 16, 4:48 PM CDT	Small Craft Advisory	MOB		5 days
Mar 16, 3:51 PM CDT	Flash Flood Warning	MOB	Wayne	6 hr
Mar 16, 5:07 PM CDT	Special Weather Statement	MOB	Wayne	38 min

Nearby

Flash Flood Watches in Alabama, 2021 Flash Flood Watches in Florida, 2021 Flash Flood Watches in Mississippi, 2021 Every flash flood watch in 2021

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.