Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Mobile, AL

October 22, 2017Mobile County, Alabama

NWS Mobile, AL issued this special weather statement at Oct 22, 2017, 11:28 AM CDT for Mobile County, Alabama. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 22, 2017, 11:28 AM CDT (16:28 UTC)
Expired
Oct 22, 2017, 12:15 PM CDT
In force
47 min
Issued by
NWS Mobile, AL

County Mobile County, AL

The radar

The Mobile radar (KMOB), 15 km from the middle of the area, began a volume at 16:29 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

Jackson, MS (KJAN), launched 12:00Z, 4.5 hours before the alert went out and 238 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, Jackson, MS at 12:00Z on 2017-10-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 joules per kilogram.LCLLFCEL10008507005003002001001 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, Jackson, MS at 12:00Z on 2017-10-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.19395878Sfc1 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
72 J/kg
Mixed-layer CIN
-332 J/kg
Mixed-layer LCL
1526 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Oct 22, 10:49 AM CDT, 39 minutes earlier.

Area forecast discussion, Oct 22, 10:49 AM CDT, 39 minutes before
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Hazardous weather outlook, Oct 22, 6:15 AM CDT, 5 hours 13 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Mobile AL
615 AM CDT Sun Oct 22 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-231115-
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-Wayne-Perry-Greene-Stone-George-
615 AM CDT Sun Oct 22 2017

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

.DAY ONE...Today and Tonight

Numerous to widespread showers and thunderstorms will move across
the region ahead of an approaching cold front this afternoon and
tonight. Locally heavy rainfall may result in ponding of water on
roadways along with minor flooding of urban and low lying areas.

A few strong to severe thunderstorms will also be possible mostly
ahead of the cold front late this afternoon and this evening.
Damaging straightline winds with maybe a few isolated brief
tornadoes will be possible late this afternoon through this
evening.

A high risk for rip currents will continue along the coastal
beaches of Alabama and Northwest Florida through this evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

A moderate risk for rip currents can be expected along the gulf
beaches of Alabama and Northwest Florida on Monday.

.SPOTTER INFORMATION STATEMENT...

Activation of SkyWarn Severe Storm Spotter networks is not
expected through Saturday.

GMZ630>635-650-655-670-675-231115-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Perdido Bay-Pensacola Bay System-Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Destin to Pensacola FL out 20 NM-
Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Destin to Pensacola FL from 20 to 60 NM-
615 AM CDT Sun Oct 22 2017

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

.DAY ONE...Today and Tonight

Hazardous wind and wave conditions for small craft can be
expected through tonight.

Scattered to numerous showers and thunderstorms can be
expected through tonight. A few strong to severe thunderstorms
will be possible. Gusty straight line winds, periods of very
heavy rain and a few isolated waterspouts will be possible
through tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Hazardous wind and wave conditions for small craft can be
expected Monday through midweek in the wake of a cold front that
moves across the marine area early Monday.

In the hours before

Special weather statement, Oct 22, 11:28 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 22, 12:19 PM CDTFlash Flood WarningMOBMobile2 hr
Oct 22, 12:47 PM CDTAreal Flood AdvisoryMOBMobile118 min
Oct 22, 1:00 PM CDTTornado Warning Tornado observedMOBBaldwin2 min
Oct 22, 1:01 PM CDTTornado Warning Tornado observedMOBBaldwin29 min
Oct 22, 1:36 PM CDTTornado WarningMOBBaldwin24 min
Oct 22, 1:39 PM CDTTornado WarningMOBBaldwin34 min
Oct 22, 1:59 PM CDTFlash Flood WarningMOBMobile3 hr
Oct 22, 2:05 PM CDTSpecial Marine WarningMOB55 min
Oct 22, 2:11 PM CDTTornado WarningMOBBaldwin49 min
Oct 22, 2:39 PM CDTTornado WarningMOBBaldwin36 min
Oct 22, 2:41 PM CDTTornado WarningMOBBaldwin23 min
Oct 22, 3:01 PM CDTSpecial Marine WarningMOB44 min
Oct 22, 3:22 PM CDTAreal Flood WarningMOBMobile3 hr
Oct 22, 3:35 PM CDTAreal Flood AdvisoryMOBBaldwin, Escambia3 hr
Oct 22, 3:38 PM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Oct 22, 3:52 PM CDTSpecial Marine WarningMOB23 min
Oct 22, 3:58 PM CDTTornado Warning Tornado observedMOBBaldwin47 min
Oct 22, 4:25 PM CDTAreal Flood WarningMOBBaldwin, Mobile6 hr
Oct 22, 4:34 PM CDTSpecial Marine WarningMOB56 min
Oct 22, 5:06 PM CDTAreal Flood AdvisoryMOBMobile114 min
Oct 22, 5:15 PM CDTFlash Flood WarningMOBBaldwin, Mobile6 hr
Oct 22, 5:29 PM CDTSpecial Marine WarningMOB61 min
Oct 22, 5:31 PM CDTAreal Flood AdvisoryMOBButler, Conecuh, Escambia3 hr
Oct 22, 5:47 PM CDTRiver Flood WarningMOBBaldwin60 hr
Oct 22, 5:48 PM CDTRiver Flood WarningMOBBaldwin31 hr
Oct 22, 8:42 AM CDTRiver Flood WarningMOBOkaloosa3 days
Oct 22, 6:34 PM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa3 hr
Oct 22, 10:28 AM CDTAreal Flood AdvisoryMOBStone3 hr
Oct 22, 11:01 AM CDTAreal Flood AdvisoryMOBGeorge3 hr
Oct 22, 11:34 AM CDTFlash Flood WarningMOBGeorge3 hr

Nearby

Special Weather Statements in Alabama, 2017Every special weather statement in 2017

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.