Alert archive / Alabama / Areal Flood Advisories in 2021

Areal Flood Advisory 84, NWS Mobile, AL

July 3, 2021Baldwin County, Alabama

NWS Mobile, AL issued this areal flood advisory at Jul 3, 2021, 4:47 PM CDT for Baldwin County, Alabama. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 3, 2021, 4:47 PM CDT (21:47 UTC)
Expired: Jul 3, 2021, 8:00 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 47 km from the middle of the area, began a volume at 21:50 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.8 hours before the alert went out and 192 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: 1029 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -48 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 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 Jul 3, 4:14 PM CDT, 33 minutes earlier.

Area forecast discussion, Jul 3, 4:14 PM CDT, 33 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:28 PM CDT	Areal Flood Advisory	MOB	Baldwin	2 hr
Jul 3, 1:36 PM CDT	Areal Flood Advisory	MOB	Mobile	114 min
Jul 3, 12:40 PM CDT	Areal Flood Advisory	MOB	Escambia	2 hr
Jul 3, 2:38 PM CDT	Areal Flood Advisory	MOB	Okaloosa, Santa Rosa	112 min

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.