Alert archive / Alabama / Areal Flood Warnings in 2020

Areal Flood Warning 1, NWS Mobile, AL

March 4, 20207 counties in Alabama

NWS Mobile, AL issued this areal flood warning at Mar 4, 2020, 12:30 PM CST for 7 counties in Alabama. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 4, 2020, 12:30 PM CST (18:30 UTC)
Expired
Mar 5, 2020, 6:30 AM CST
In force
18 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

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

The radar

The Mobile radar (KMOB), 151 km from the middle of the area, began a volume at 18:31 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, 6.5 hours before the alert went out and 166 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, Birmingham, AL at 12:00Z on 2020-03-04Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2020-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -166 square meters per square second.1939587897117Sfc1 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
1091 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-166 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this areal flood warning went out at Mar 4, 10:19 AM CST, 2 hours 11 minutes earlier.

Area forecast discussion, Mar 4, 10:19 AM CST, 2 hours 11 minutes before
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Hazardous weather outlook, Mar 4, 9:16 AM CST, 3 hours 14 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Mobile AL
916 AM CST Wed Mar 4 2020

ALZ265-266-FLZ202-204-206-051500-
Mobile Coastal-Baldwin Coastal-Escambia Coastal-Santa Rosa Coastal-
Okaloosa Coastal-
916 AM CST Wed Mar 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...TORNADO WATCH 39 IN EFFECT UNTIL 10 AM CST THIS MORNING...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH LATE FRIDAY NIGHT...

This Hazardous Weather Outlook is for southwest Alabama and
northwest Florida.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov/mob (see
Fast Access Product Section) for more information about the
following hazards.

   High Rip Current Risk.
   Tornado Watch.
   Flash Flood Watch.

A slight risk of severe weather exists through tonight with all
modes of severe weather possible being large hail, damaging winds
and perhaps a few tornadoes. Thus, a tornado watch is in effect
through mid-morning. In addition, heavy rainfall leading to flash
flooding and exacerbated river flooding is expected. 3 to 5
inches of rain with localized amounts of 6 to 8 inches are
possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to weather.gov/mob (see
Fast Access Product Section) for more information about the
following hazards.

   High Rip Current Risk.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ALZ059-060-261>264-FLZ201-203-205-051500-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Escambia Inland-Santa Rosa Inland-Okaloosa Inland-
916 AM CST Wed Mar 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...TORNADO WATCH 39 IN EFFECT UNTIL 10 AM CST THIS MORNING...

This Hazardous Weather Outlook is for south central Alabama,
southwest Alabama and northwest Florida.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov/mob (see
Fast Access Product Section) for more information about the
following hazards.

   Tornado Watch.
   Flash Flood Watch.

A slight risk of severe weather exists through tonight with all
modes of severe weather possible being large hail, damaging winds and
perhaps a few tornadoes. Thus, a tornado watch is in effect through
mid-morning. In addition, heavy rainfall leading to flash flooding
and exacerbated river flooding is expected. 3 to 5 inches of rain
with localized amounts of 6 to 8 inches are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ALZ051>058-MSZ067-075-076-078-079-051500-
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Wayne-Perry-Greene-Stone-George-
916 AM CST Wed Mar 4 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for south central Alabama,
southwest Alabama and southeast Mississippi.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov/mob (see
Fast Access Product Section) for more information about the
following hazards.

   Flash Flood Watch.

A slight risk of severe weather exists through tonight with large
hail being the primary threat. In addition, heavy rainfall leading
to flash flooding and exacerbated river flooding is expected. 3 to 5
inches of rain with localized amounts of 6 to 8 inches are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

GMZ630>636-650-655-051500-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Perdido Bay-Pensacola Bay System-Western Choctawhatchee Bay-
Eastern Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Okaloosa Walton County Line FL to Pensacola FL
out 20 NM-
916 AM CST Wed Mar 4 2020

...DENSE FOG ADVISORY IN EFFECT UNTIL 6 AM CST THURSDAY...

This Hazardous Weather Outlook is for the coastal waters of Alabama
and northwest Florida.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov/mob (see
Fast Access Product Section) for more information about the
following hazards.

   Dense Fog Advisory.

Winds, waves and seas will be locally higher in storms through tonight.
A few storms could become severe with perhaps a few tornadoes.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous wind and wave conditions for small craft will be
possible in the wake of a cold front Thursday through Saturday.

GMZ670-675-051500-
Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Okaloosa Walton County Line FL to Pensacola FL from
20 to 60 NM-
916 AM CST Wed Mar 4 2020

This Hazardous Weather Outlook is for the coastal waters of Alabama
and northwest Florida.

.DAY ONE...Today and Tonight.

Winds, waves and seas will be locally higher in storms through tonight.
A few storms could become severe with perhaps a few tornadoes.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous wind and wave conditions for small craft will be
possible in the wake of a cold front Thursday through Saturday.

In the hours before

Special weather statement, Mar 4, 6:57 AM CST, 5 hours 33 minutes before
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Local storm report, Mar 4, 7:29 AM CST, 5 hours 1 minute before
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Local storm report, Mar 4, 9:06 AM CST, 3 hours 24 minutes before
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Local storm report, Mar 4, 11:27 AM CST, 1 hour 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1127 AM CST WED MAR 4 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0546 AM     HAIL             STRENGTHFORD            31.61N 88.88W
03/04/2020  E1.00 INCH       WAYNE              MS   PUBLIC

            PICTURES OF QUARTER SIZE HAIL REPORTED VIA
            SOCIAL MEDIA.

&&

MB
Special weather statement, Mar 4, 11:43 AM CST, 47 minutes before
Special Weather Statement
National Weather Service Mobile AL
1143 AM CST Wed Mar 4 2020

ALZ051-041830-
Choctaw AL-
1143 AM CST Wed Mar 4 2020

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN CHOCTAW COUNTY UNTIL 1230 PM CST...

At 1142 AM CST, the strong thunderstorm was located about 10 miles
west of Yantley, or 9 miles southeast of Meridian, moving east at 45
mph.

Half inch hail and wind gusts over 40 mph will be possible with
this storm.

Locations impacted include...
Yantley.

LAT...LON 3231 8793 3228 8793 3230 8794 3230 8800
      3228 8801 3228 8802 3226 8801 3221 8801
      3218 8844 3231 8842
TIME...MOT...LOC 1742Z 268DEG 37KT 3227 8861

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 4, 1:22 AM CSTDense Fog AdvisoryMOBBaldwin, Mobile8 hr
Mar 4, 3:57 AM CSTSevere Thunderstorm WarningMOBChoctaw48 min
Mar 4, 4:11 AM CSTSevere Thunderstorm WarningMOBChoctaw49 min
Mar 4, 4:39 AM CSTSpecial Weather StatementMOBClarke51 min
Mar 4, 4:55 AM CSTSevere Thunderstorm WarningMOBClarke50 min
Mar 4, 5:15 AM CSTSevere Thunderstorm WarningMOBWilcox45 min
Mar 4, 5:26 AM CSTAreal Flood AdvisoryMOBClarke, Wilcox3 hr
Mar 4, 5:52 AM CSTSevere Thunderstorm WarningMOBWilcox38 min
Mar 4, 6:14 AM CSTSevere Thunderstorm WarningMOBWashington46 min
Mar 4, 6:18 AM CSTSevere Thunderstorm WarningMOBButler, Crenshaw, Monroe, Wilcox57 min
Mar 4, 6:41 AM CSTAreal Flood AdvisoryMOBButler, Crenshaw3 hr
Mar 4, 6:57 AM CSTSpecial Weather StatementMOBWashington48 min
Mar 4, 7:54 AM CSTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia, Monroe51 min
Mar 4, 8:36 AM CSTSevere Thunderstorm WarningMOBCovington39 min
Mar 4, 9:21 AM CSTAreal Flood AdvisoryMOBCovington3 hr
Mar 4, 11:43 AM CSTSpecial Weather StatementMOBChoctaw47 min
Mar 4, 12:43 PM CSTSpecial Weather StatementMOBCovington32 min
Mar 4, 3:16 PM CSTSmall Craft AdvisoryMOB66 hr
Mar 3, 6:54 PM CSTRiver Flood WarningMOBOkaloosa5 days
Mar 4, 3:18 AM CSTSevere Thunderstorm WarningMOBWayne42 min
Mar 4, 5:31 AM CSTSevere Thunderstorm WarningMOBWayne44 min
Mar 4, 5:55 AM CSTSevere Thunderstorm WarningMOBGreene, Wayne38 min

Nearby

Areal Flood Warnings in Alabama, 2020Every areal 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.