Alert archive / Alabama / Wind Chill Advisories in 2021

Wind Chill Advisory 1, NWS Mobile, AL

February 14, 2021Escambia County, Okaloosa County, Santa Rosa County, Florida; 12 counties in Alabama; 5 counties in Mississippi

NWS Mobile, AL issued this wind chill advisory at Feb 14, 2021, 9:07 PM CST for Escambia County, Okaloosa County, Santa Rosa County, Florida; 12 counties in Alabama; 5 counties in Mississippi. It took effect at Feb 15, 2021, 8:00 PM CST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Feb 14, 2021, 9:07 PM CST (03:07 UTC)
In effect from
Feb 15, 2021, 8:00 PM CST
Expired
Feb 16, 2021, 9:00 AM CST
In force
13 hr
Issued by
NWS Mobile, AL

Counties Baldwin County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 83 km from the middle of the area, began a volume at 03:07 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, 3.1 hours before the alert went out and 223 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, Slidell Radar S, LA at 00:00Z on 2021-02-15Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2021-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

396 
WWUS44 KMOB 150307
WSWMOB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mobile AL
907 PM CST Sun Feb 14 2021

...A PERIOD OF FREEZING RAIN WILL BE POSSIBLE ON MONDAY...

.Freezing rain will be possible throughout the day on Monday over
areas of inland Southeast Mississippi and inland Southwest 
Alabama. Freezing rain totals of around one tenth of an inch will 
be possible; however, far northwestern Choctaw, Perry and Wayne 
counties will need to be monitored for up to one quarter of an 
inch of accumulation. Confidence in higher totals is too low for 
an upgrade at this time.

ALZ051>053-MSZ067-075-076-078-151200-
/O.NEW.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
/O.CON.KMOB.WW.Y.0001.210215T0900Z-210215T2100Z/
Choctaw-Washington-Clarke-Wayne-Perry-Greene-Stone-
Including the cities of Butler, Lisman, Silas, Chatom, Millry, 
Grove Hill, Jackson, Thomasville, Waynesboro, Beaumont, 
New Augusta, Richton, Leakesville, McLain, and Wiggins
907 PM CST Sun Feb 14 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM TO 3 PM
CST MONDAY...
...WIND CHILL ADVISORY IN EFFECT FROM 10 PM MONDAY TO 9 AM CST
TUESDAY...

* WHAT...For the Winter Weather Advisory, freezing rain 
  expected. Total ice accumulations of around one tenth of an 
  inch. For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills as low as 5 above zero.

* WHERE...Portions of southwest Alabama and southeast 
  Mississippi.

* WHEN...For the Winter Weather Advisory, from 3 AM to 3 PM CST 
  Monday. For the Wind Chill Advisory, from 10 PM Monday to 9 AM 
  CST Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will
  likely become slick and hazardous. The hazardous conditions
  could impact the morning commute. Exposed skin may quickly 
  become frostbitten or frozen. Wind chill values may fall to 
  extremely dangerous levels and frostbite and hypothermia are 
  possible if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Delay all travel if possible.  If travel is absolutely necessary,
drive with extreme caution and be prepared for sudden changes in
visibility.Leave plenty of room between you and the vehicle ahead
of you.  Allow extra time to reach your destination.  Avoid
sudden braking or acceleration and be especially cautious on
hills or when making turns.

If travel is absolutely necessary, prepare and take a winter
storm kit, including such items as tire chains, jumper cables,
flashlight, shovel. blankets and extra clothing. Also take water,
a first aid kit, or anything else that would help you survive in 
case you become stranded.

You are urged to stay indoors until conditions improve.  If you
must go outside, several layers of clothes will keep you warmer
than a single heavy coat.  A hat is also important as half your
body heat loss can be from the head.

Travel is higher discouraged due to downed trees, power lines and
slick roadways. Do not touch downed lines.

&&

$$

ALZ054-261-263-MSZ079-151200-
/O.NEW.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
Wilcox-Mobile Inland-Mobile Central-George-
Including the cities of Camden, Pine Hill, Citronelle, Saraland, 
Mobile, Prichard, Theodore, and Lucedale
907 PM CST Sun Feb 14 2021

...WIND CHILL ADVISORY IN EFFECT FROM 10 PM MONDAY TO 9 AM CST
TUESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 5 
  above zero.

* WHERE...In Alabama, Wilcox, Mobile Inland and Mobile Central 
  Counties. In Mississippi, George County.

* WHEN...From 10 PM Monday to 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or frozen.
  Wind chill values may fall to extremely dangerous levels and
  frostbite and hypothermia are possible if precautions are not
  taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You are urged to stay indoors until conditions improve.  If you
must go outside, several layers of clothes will keep you warmer
than a single heavy coat.  A hat is also important as half your
body heat loss can be from the head.

&&

$$
3 follow-up statements
306 
WWUS44 KMOB 150942
WSWMOB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mobile AL
342 AM CST Mon Feb 15 2021

...A PERIOD OF FREEZING RAIN WILL BE POSSIBLE ON MONDAY...

.Freezing rain will be possible throughout the day on Monday over
areas of inland Southeast Mississippi and inland Southwest
Alabama. Freezing rain totals of around one tenth of an inch will
be possible; however, far northwestern Choctaw, Perry and Wayne
counties will need to be monitored for up to one quarter of an
inch of accumulation. Confidence in higher totals is too low for
an upgrade at this time.

MSZ079-151745-
/O.EXA.KMOB.WW.Y.0001.000000T0000Z-210215T2100Z/
/O.CON.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
George-
Including the city of Lucedale
342 AM CST Mon Feb 15 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 9 AM CST TUESDAY...

* WHAT...For the Winter Weather Advisory, freezing rain. 
  Additional ice accumulations of a light glaze. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as 
  low as 5 above zero.

* WHERE...George County.

* WHEN...For the Winter Weather Advisory, until 3 PM CST this 
  afternoon. For the Wind Chill Advisory, from 10 PM this 
  evening to 9 AM CST Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will
  likely become slick and hazardous. The hazardous conditions
  could impact the morning or evening commute. Exposed skin may
  quickly become frostbitten or frozen. Wind chill values may fall
  to extremely dangerous levels and frostbite and hypothermia are
  possible if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Delay all travel if possible. If travel is absolutely necessary, 
drive with extreme caution and be prepared for sudden changes in 
visibility. Leave plenty of room between you and the vehicle ahead
of you. Allow extra time to reach your destination. Avoid sudden 
braking or acceleration and be especially cautious on hills or 
when making turns.

You are urged to stay indoors until conditions improve. If you 
must go outside, several layers of clothes will keep you warmer 
than a single heavy coat. A hat is also important as half your 
body heat loss can be from the head. 

&&

$$

ALZ055-262-151745-
/O.EXA.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
Monroe-Baldwin Inland-
Including the cities of Homewood, Monroeville, and Stockton
342 AM CST Mon Feb 15 2021

...WIND CHILL ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 9 AM
CST TUESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 above zero.

* WHERE...Monroe and Baldwin Inland Counties.

* WHEN...From 10 PM this evening to 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or 
  frozen. Wind chill values may fall to extremely dangerous levels
  and frostbite and hypothermia are possible if precautions are 
  not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You are urged to stay indoors until conditions improve. If you 
must go outside, several layers of clothes will keep you warmer 
than a single heavy coat. A hat is also important as half your 
body heat loss can be from the head.

&&

$$

ALZ051>053-MSZ067-075-076-078-151745-
/O.CON.KMOB.WW.Y.0001.000000T0000Z-210215T2100Z/
/O.CON.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
Choctaw-Washington-Clarke-Wayne-Perry-Greene-Stone-
Including the cities of Butler, Lisman, Silas, Chatom, Millry, 
Grove Hill, Jackson, Thomasville, Waynesboro, Beaumont, 
New Augusta, Richton, Leakesville, McLain, and Wiggins
342 AM CST Mon Feb 15 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 9 AM CST TUESDAY...

* WHAT...For the Winter Weather Advisory, freezing rain. 
  Additional ice accumulations of around one tenth of an inch. 
  For the Wind Chill Advisory, very cold wind chills expected. 
  Wind chills as low as zero.

* WHERE...Portions of southwest Alabama and southeast 
  Mississippi.

* WHEN...For the Winter Weather Advisory, until 3 PM CST this 
  afternoon. For the Wind Chill Advisory, from 10 PM this 
  evening to 9 AM CST Tuesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. The hazardous conditions 
  could impact the morning or evening commute. Exposed skin may 
  quickly become frostbitten or frozen. Wind chill values may 
  fall to extremely dangerous levels and frostbite and 
  hypothermia are possible if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Delay all travel if possible. If travel is absolutely necessary, 
drive with extreme caution and be prepared for sudden changes in 
visibility. Leave plenty of room between you and the vehicle 
ahead of you. Allow extra time to reach your destination. Avoid 
sudden braking or acceleration and be especially cautious on hills
or when making turns.

You are urged to stay indoors until conditions improve. If you 
must go outside, several layers of clothes will keep you warmer 
than a single heavy coat. A hat is also important as half your 
body heat loss can be from the head.

&&

$$

ALZ054-261-263-151745-
/O.CON.KMOB.WC.Y.0001.210216T0400Z-210216T1500Z/
Wilcox-Mobile Inland-Mobile Central-
Including the cities of Camden, Pine Hill, Citronelle, Saraland, 
Mobile, Prichard, and Theodore
342 AM CST Mon Feb 15 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 9 AM CST TUESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 5 
  above zero.

* WHERE...Wilcox, Mobile Inland and Mobile Central Counties.

* WHEN...From 10 PM this evening to 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or 
  frozen. Wind chill values may fall to extremely dangerous levels
  and frostbite and hypothermia are possible if precautions are 
  not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You are urged to stay indoors until conditions improve. If you 
must go outside, several layers of clothes will keep you warmer 
than a single heavy coat. A hat is also important as half your 
body heat loss can be from the head.

&&

$$
450 
WWUS44 KMOB 152140
WSWMOB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mobile AL
340 PM CST Mon Feb 15 2021

...WIND CHILLS BETWEEN 0 AND 10 DEGREES EXPECTED ACROSS MUCH OF THE 
AREA TONIGHT...

...WINTER WEATHER ADVISORY HAS EXPIRED... 

.Freezing rain has ended, but hazardous road conditions will be 
possible overnight as very cold air spills into the area from the 
west due to any ice that may have accumulated and any wet surfaces 
possibly flash freezing overnight. Another big concern tonight will 
be very low wind chill values, dropping to between 0 and 10 degrees 
in many areas.

ALZ056>060-264-FLZ201-203-205-160545-
/O.EXB.KMOB.WC.Y.0001.210216T0200Z-210216T1500Z/
Conecuh-Butler-Crenshaw-Escambia-Covington-Baldwin Central-
Escambia Inland-Santa Rosa Inland-Okaloosa Inland-
Including the cities of Evergreen, Greenville, Brantley, Luverne,
Atmore, Brewton, Flomaton, Andalusia, Opp, Bay Minette, Daphne, 
Fairhope, Foley, Spanish Fort, Century, Molino, Walnut Hill, Jay,
Milton, and Crestview
340 PM CST Mon Feb 15 2021

....WIND CHILL ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 9 AM CST 
TUESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 10 to 
  15 degrees likely. 

* WHERE...Portions of south central and southwest Alabama and 
  northwest Florida.

* WHEN...From 8 PM this evening to 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or frozen. 
  Wind chill values may fall to extremely dangerous levels and 
  frostbite and hypothermia are possible if precautions are not 
  taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is absolutely necessary, prepare and take a winter storm 
kit, including such items as tire chains, jumper cables, flashlight, 
shovel. blankets and extra clothing.Also take water, a first aid 
kit, or anything else that would help you survive in case you become 
stranded.

Travel is highly discouraged due to the possibility of black ice on 
roadways. 

You are urged to stay indoors until conditions improve.  If you must 
go outside, several layers of clothes will keep you warmer than a 
single heavy coat.A hat is also important as half your body heat 
loss can be from the head.

&&

$$

ALZ051>055-261>263-MSZ067-075-076-078-079-160545-
/O.EXT.KMOB.WC.Y.0001.210216T0200Z-210216T1500Z/
Choctaw-Washington-Clarke-Wilcox-Monroe-Mobile Inland-
Baldwin Inland-Mobile Central-Wayne-Perry-Greene-Stone-George-
Including the cities of Butler, Lisman, Silas, Chatom, Millry, 
Grove Hill, Jackson, Thomasville, Camden, Pine Hill, Homewood, 
Monroeville, Citronelle, Saraland, Stockton, Mobile, Prichard, 
Theodore, Waynesboro, Beaumont, New Augusta, Richton, 
Leakesville, McLain, Wiggins, and Lucedale
340 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO 9 AM 
CST TUESDAY...
...WINTER WEATHER ADVISORY HAS EXPIRED...

* WHAT...Very cold wind chills expected. Wind chills as low as 10 
  degrees to near zero will be likely across much of the area. 
 
* WHERE...all of southeast Mississippi, most of southwest and south 
  central Alabama, and most of the western Florida panhandle. 

* WHEN...From 8 PM this evening to 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or frozen. 
  Wind chill values may fall to extremely dangerous levels and 
  frostbite and hypothermia are possible if precautions are not 
  taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is absolutely necessary, prepare and take a winter storm 
kit, including such items as tire chains, jumper cables, flashlight, 
shovel. blankets and extra clothing.Also take water, a first aid 
kit, or anything else that would help you survive in case you become 
stranded.

Travel is highly discouraged due to the possibility of black ice on 
roadways. 

You are urged to stay indoors until conditions improve.  If you must 
go outside, several layers of clothes will keep you warmer than a 
single heavy coat.A hat is also important as half your body heat 
loss can be from the head.

&&

$$
192 
WWUS44 KMOB 160249
WSWMOB

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mobile AL
849 PM CST Mon Feb 15 2021

...WIND CHILLS BETWEEN 0 AND 10 DEGREES EXPECTED ACROSS MUCH OF
THE AREA TONIGHT...

.Hazardous road conditions will be possible overnight as very 
cold air spills into the area and any wet surfaces possibly flash
freezing overnight. Another big concern tonight will be very low 
wind chill values, dropping to between 0 and 10 degrees in many 
areas.

ALZ051>060-261>264-FLZ201-203-205-MSZ067-075-076-078-079-161500-
/O.CON.KMOB.WC.Y.0001.000000T0000Z-210216T1500Z/
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Escambia Inland-Santa Rosa Inland-Okaloosa Inland-
Wayne-Perry-Greene-Stone-George-
Including the cities of Butler, Lisman, Silas, Chatom, Millry, 
Grove Hill, Jackson, Thomasville, Camden, Pine Hill, Homewood, 
Monroeville, Evergreen, Greenville, Brantley, Luverne, Atmore, 
Brewton, Flomaton, Andalusia, Opp, Citronelle, Saraland, 
Stockton, Mobile, Prichard, Theodore, Bay Minette, Daphne, 
Fairhope, Foley, Spanish Fort, Century, Molino, Walnut Hill, Jay,
Milton, Crestview, Waynesboro, Beaumont, New Augusta, Richton, 
Leakesville, McLain, Wiggins, and Lucedale
849 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST TUESDAY...

* WHAT...Very cold wind chills. Wind chills as low as 0 to 10
  degrees.

* WHERE...Portions of south central and southwest Alabama, 
  northwest Florida and southeast Mississippi.

* WHEN...Until 9 AM CST Tuesday.

* IMPACTS...Exposed skin may quickly become frostbitten or 
  frozen. Wind chill values may fall to extremely dangerous 
  levels and frostbite and hypothermia are possible if 
  precautions are not taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You are urged to stay indoors until conditions improve. If you 
must go outside, several layers of clothes will keep you warmer 
than a single heavy coat.A hat is also important as half your body
heat loss can be from the head.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 14, 8:52 PM CSTHard Freeze WarningMOBEscambia, Santa Rosa36 hr
Feb 15, 12:41 PM CSTSpecial Weather StatementMOBOkaloosa49 min
Feb 15, 12:55 PM CSTSevere Thunderstorm WarningMOBOkaloosa36 min
Feb 15, 7:24 AM CSTMarine Dense Fog AdvisoryMOB8 hr
Feb 15, 10:30 AM CSTSpecial Marine WarningMOB90 min
Feb 15, 11:40 AM CSTSpecial Marine WarningMOB65 min
Feb 15, 12:39 PM CSTSpecial Marine WarningMOB66 min
Feb 15, 12:53 PM CSTSpecial Weather StatementMOBButler52 min
Feb 15, 1:37 PM CSTSpecial Weather StatementMOBCovington23 min

Nearby

Wind Chill Advisories in Alabama, 2021Wind Chill Advisories in Mississippi, 2021Wind Chill Advisories in Florida, 2021Every wind chill 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.