Alert archive / Alabama / Areal Flood Advisories in 2021

Areal Flood Advisory 266, NWS Mobile, AL

October 4, 2021Clarke County, Alabama

NWS Mobile, AL issued this areal flood advisory at Oct 4, 2021, 3:22 PM CDT for Clarke County, Alabama. It was in force for 98 min.

The area

The counties it named.

The facts

Issued: Oct 4, 2021, 3:22 PM CDT (20:22 UTC)
Expired: Oct 4, 2021, 5:00 PM CDT
In force: 98 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Clarke County, AL

The radar

The Mobile radar (KMOB), 118 km from the middle of the area, began a volume at 20:24 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, 8.4 hours before the alert went out and 194 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: 565 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 616 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 advisory went out at Oct 4, 1:31 PM CDT, 1 hour 51 minutes earlier.

Area forecast discussion, Oct 4, 1:31 PM CDT, 1 hour 51 minutes before

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In the hours before

Local storm report, Oct 4, 9:38 AM CDT, 5 hours 44 minutes before

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Local storm report, Oct 4, 9:57 AM CDT, 5 hours 25 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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Local storm report, Oct 4, 3:03 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
303 PM CDT MON OCT 4 2021

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

0240 PM     FLASH FLOOD      2 NW CAMDEN             32.01N 87.32W
10/04/2021                   WILCOX             AL   EMERGENCY MNGR

            KENNEDY STREET CLOSED DUE TO FLOODING.

&&

JFB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 4, 3:30 AM CDT	Flash Flood Watch	MOB	Baldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 3 more	3 days
Oct 4, 5:33 AM CDT	Areal Flood Advisory	MOB	Baldwin, Mobile	3 hr
Oct 4, 6:45 AM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Oct 4, 9:06 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Oct 4, 1:28 PM CDT	Areal Flood Advisory	MOB	Wilcox	2 hr
Oct 4, 1:47 PM CDT	Flash Flood Warning	MOB	Wilcox	5 hr
Oct 4, 4:37 PM CDT	Areal Flood Advisory	MOB	Clarke, Washington, Wilcox	3 hr
Oct 4, 5:58 PM CDT	Areal Flood Advisory	MOB	Clarke, Monroe, Washington	2 hr
Oct 4, 4:42 AM CDT	Areal Flood Advisory	MOB	Okaloosa	3 hr
Oct 4, 5:18 AM CDT	Flash Flood Warning	MOB	Okaloosa	6 hr
Oct 4, 6:02 AM CDT	Areal Flood Advisory	MOB	Escambia	3 hr
Oct 4, 7:11 AM CDT	Areal Flood Advisory	MOB	Okaloosa, Santa Rosa	3 hr
Oct 4, 8:17 AM CDT	Flash Flood Warning	MOB	Okaloosa, Santa Rosa	6 hr
Oct 4, 11:14 AM CDT	Flash Flood Warning	MOB	Okaloosa	4 hr
Oct 4, 4:08 PM CDT	Severe Thunderstorm Warning	MOB	Perry, Stone	31 min
Oct 4, 6:13 PM CDT	Areal Flood Advisory	MOB	George, Greene, Perry	2 hr

Nearby

Areal Flood Advisories in Alabama, 2021 Every areal flood advisory 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.