Alert archive / Alabama / Areal Flood Advisories in 2018

Areal Flood Advisory 13, NWS Mobile, AL

May 17, 2018Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this areal flood advisory at May 17, 2018, 7:47 PM CDT for Baldwin County, Mobile County, Alabama. It was in force for 118 min.

The area

The counties it named.

The facts

Issued: May 17, 2018, 7:47 PM CDT (00:47 UTC)
Expired: May 17, 2018, 9:45 PM CDT
In force: 118 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 25 km from the middle of the area, began a volume at 00:51 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 00:00Z, 0.8 hours before the alert went out and 172 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: 912 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 2025 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 134 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 May 17, 6:38 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, May 17, 6:38 PM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, May 17, 6:01 AM CDT, 13 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Mobile AL
601 AM CDT Thu May 17 2018

ALZ051>060-261>266-FLZ201>206-GMZ633-MSZ067-075-076-078-079-
181115-
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland-
Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal-
Okaloosa Inland-Okaloosa Coastal-Perdido Bay-Wayne-Perry-Greene-
Stone-George-
601 AM CDT Thu May 17 2018

This Hazardous Weather Outlook is for portions of south central
Alabama...southwest Alabama...northwest Florida...southeast
Mississippi and the coastal waters of Alabama and northwest
Florida.

.DAY ONE...Today and Tonight

Scattered to numerous showers and thunderstorms are expected to
develop across the area again, especially during the afternoon and
evening hours. A few storms could become strong to marginally
severe this afternoon, capable of producing strong to locally
damaging wind gusts, hail, frequent cloud to ground lightning
strikes, and locally heavy rainfall.

There is a moderate risk of rip currents along the Alabama and
northwest Florida panhandle beaches today and tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a moderate risk of rip currents along the Alabama and
northwest Florida Friday and Friday night.

.SPOTTER INFORMATION STATEMENT...

Activation of SkyWarn Severe Storm Spotter networks is currently
not anticipated.

GMZ630>632-634>636-650-655-670-675-181115-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
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-
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-
601 AM CDT Thu May 17 2018

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

.DAY ONE...Today and Tonight

Isolated to scattered showers and thunderstorms will be capable of
producing locally strong wind gusts and higher seas over the
marine area today.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Winds and seas will be locally higher near isolated to scattered
showers and thunderstorms. Otherwise, the probability for
widespread hazardous weather is low.

In the hours before

Local storm report, May 17, 5:45 PM CDT, 2 hours 2 minutes before

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Special weather statement, May 17, 6:15 PM CDT, 1 hour 32 minutes before

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Local storm report, May 17, 6:33 PM CDT, 1 hour 14 minutes before

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Local storm report, May 17, 6:44 PM CDT, 1 hour 3 minutes before

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Special weather statement, May 17, 7:18 PM CDT, 29 minutes before

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Special weather statement, May 17, 7:34 PM CDT, 13 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
May 17, 7:12 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	33 min
May 17, 7:14 PM CDT	Special Marine Warning	MOB		91 min
May 17, 7:18 PM CDT	Special Weather Statement	MOB	Mobile	42 min
May 17, 7:34 PM CDT	Special Weather Statement	MOB	Baldwin	41 min
May 17, 8:17 PM CDT	Special Weather Statement	MOB	Baldwin	28 min
May 17, 8:38 PM CDT	Special Marine Warning	MOB		97 min
May 17, 8:43 PM CDT	Special Marine Warning	MOB		62 min
May 17, 9:01 PM CDT	Special Marine Warning	MOB		59 min
May 17, 9:19 PM CDT	Special Marine Warning	MOB		86 min
May 17, 9:46 PM CDT	Special Marine Warning	MOB		89 min
May 18, 1:06 PM CDT	Special Weather Statement	MOB	Mobile	39 min
May 18, 1:56 PM CDT	Special Weather Statement	MOB	Mobile	34 min
May 18, 2:26 PM CDT	Special Weather Statement	MOB	Mobile	49 min
May 18, 3:45 PM CDT	Special Weather Statement	MOB	Baldwin	45 min
May 18, 4:35 PM CDT	Special Weather Statement	MOB	Mobile	25 min
May 17, 8:14 PM CDT	Special Weather Statement	MOB	Escambia	31 min
May 17, 9:45 PM CDT	Special Weather Statement	MOB	Okaloosa	60 min
May 18, 10:53 AM CDT	Rip Current Statement	MOB	Escambia, Okaloosa, Santa Rosa	19 hr
May 18, 1:32 PM CDT	Special Weather Statement	MOB	Okaloosa	28 min
May 18, 1:58 PM CDT	Special Weather Statement	MOB	Escambia	47 min

Nearby

Areal Flood Advisories in Alabama, 2018 Every areal flood advisory in 2018

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.