Alert archive / Alabama / Winter Storm Watches in 2021

Winter Storm Watch 2, NWS Birmingham, AL

February 14, 20215 counties in Alabama

NWS Birmingham, AL issued this winter storm watch at Feb 14, 2021, 3:36 AM CST for 5 counties in Alabama. It took effect at Feb 15, 2021, 9:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 14, 2021, 3:36 AM CST (09:36 UTC)
In effect from
Feb 15, 2021, 9:00 AM CST
Expired
Feb 15, 2021, 3:49 AM CST
In force
Issued by
NWS Birmingham, AL

Counties Bibb County, AL, Blount County, AL, Jefferson County, AL, Perry County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 18 km from the middle of the area, began a volume at 09:39 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 00:00Z, 9.6 hours before the alert went out and 17 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, Birmingham, AL at 00:00Z on 2021-02-14Temperature 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, Birmingham, AL at 00:00Z on 2021-02-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939587897117Sfc1 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
487 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

884 
WWUS44 KBMX 140936
WSWBMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Birmingham AL
336 AM CST Sun Feb 14 2021

...Light freezing rain across West Alabama tonight then a winter
storm with mixed precipitation across the western half of Central
Alabama Monday and Monday night...

ALZ011-012-014-142200-
/O.UPG.KBMX.WW.Y.0003.210215T0000Z-210215T1200Z/
/O.UPG.KBMX.WS.A.0001.210215T1200Z-210216T0600Z/
/O.NEW.KBMX.WS.W.0001.210215T0000Z-210216T0600Z/
Marion-Lamar-Winston-
Including the cities of Hamilton, Sulligent, Vernon, 
and Double Springs
336 AM CST Sun Feb 14 2021

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO
MIDNIGHT CST MONDAY NIGHT...

* WHAT...Light freezing rain tonight and heavy mixed precipitation
  expected Monday and Monday night. Total ice accumulations of
  around three tenths of an inch and total sleet and snow
  accumulations up to 1 inch with locally higher amounts.
  Temperatures falling into the teens Monday night with wind
  chills near zero.

* WHERE...Marion, Lamar and Winston Counties.

* WHEN...From 6 PM this evening to midnight CST Monday night.

* IMPACTS...Power outages and tree damage are likely due to the
  ice. Travel could be nearly impossible. The hazardous conditions
  could impact the morning and evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ013-015-022-023-030-031-142200-
/O.UPG.KBMX.WS.A.0001.210215T1200Z-210216T0600Z/
/O.NEW.KBMX.WS.W.0001.210215T0000Z-210216T0600Z/
Fayette-Walker-Pickens-Tuscaloosa-Sumter-Greene-
Including the cities of Fayette, Jasper, Carrollton, Tuscaloosa, 
Livingston, and Eutaw
336 AM CST Sun Feb 14 2021

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO
MIDNIGHT CST MONDAY NIGHT...

* WHAT...Light freezing rain tonight and then heavy mixed
  precipitation expected Monday and Monday night. Total ice
  accumulations of one tenth to three tenths of an inch and total
  sleet accumulations up to one half inch with locally higher
  amounts. Temperatures fall well below freezing by Monday night.

* WHERE...Portions of central and west central Alabama.

* WHEN...From 6 PM this evening to midnight CST Monday night.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice. Travel could be nearly impossible. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ032-039-142200-
/O.NEW.KBMX.WS.W.0001.210215T1200Z-210216T0600Z/
Hale-Marengo-
Including the cities of Greensboro, Moundville, Demopolis, 
and Linden
336 AM CST Sun Feb 14 2021

...WINTER STORM WARNING IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Heavy mixed precipitation expected. Total ice
  accumulations of one tenth to a quarter of an inch and total
  sleet accumulations up to a quarter inch with locally higher
  amounts. Temperatures fall well below freezing by Monday night.

* WHERE...Hale and Marengo Counties.

* WHEN...From 6 AM Monday to midnight CST Monday night.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ017-024-025-033-034-142200-
/O.NEW.KBMX.WS.A.0002.210215T1500Z-210216T0600Z/
Blount-Jefferson-Shelby-Perry-Bibb-
Including the cities of Oneonta, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Marion, and Centreville
336 AM CST Sun Feb 14 2021

...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...

* WHAT...Heavy mixed precipitation possible. Total ice
  accumulations of up to two tenths of an inch possible and sleet
  accumulations up to a quarter of an inch with locally higher 
  amounts. Temperatures fall well below freezing Monday night.

* WHERE...Blount, Jefferson, Shelby, Perry and Bibb Counties.

* WHEN...From Monday morning through Monday evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
3 follow-up statements
525 
WWUS44 KBMX 141915
WSWBMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Birmingham AL
115 PM CST Sun Feb 14 2021

...Light freezing rain expected across West Alabama tonight and
then a winter storm with mixed precipitation across the western 
half of Central Alabama Monday and Monday evening...

ALZ011>015-022-023-030-031-150500-
/O.CON.KBMX.WS.W.0001.210215T0000Z-210216T0600Z/
Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Sumter-
Greene-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Carrollton, Tuscaloosa, Livingston, 
and Eutaw
115 PM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO MIDNIGHT CST MONDAY NIGHT...

* WHAT...Light freezing rain tonight and heavy mixed precipitation
  expected Monday and Monday evening. Total ice accumulations of
  one tenth to four tenths of an inch and total sleet and snow
  accumulations up to one inch. Temperatures falling into the
  teens Monday night.

* WHERE...Marion, Lamar and Winston Counties.

* WHEN...From 6 PM this evening to midnight CST Monday night.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice. Travel could be nearly impossible. The hazardous 
  conditions could impact the morning and evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ032-039-150500-
/O.CON.KBMX.WS.W.0001.210215T1200Z-210216T0600Z/
Hale-Marengo-
Including the cities of Greensboro, Moundville, Demopolis, 
and Linden
115 PM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* WHAT...A mixture of freezing rain and sleet expected. Total ice
  accumulations up to two tenths of an inch and total sleet
  accumulations up to a one quarter of an inch. Temperatures fall
  well below freezing by Monday night.

* WHERE...Hale and Marengo Counties.

* WHEN...From 6 AM Monday to midnight CST Monday night.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ017-024-025-033-034-150500-
/O.CON.KBMX.WS.A.0002.210215T1500Z-210216T0600Z/
Blount-Jefferson-Shelby-Perry-Bibb-
Including the cities of Oneonta, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Marion, and Centreville
115 PM CST Sun Feb 14 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING
THROUGH MONDAY EVENING...

* WHAT...A mixture of freezing rain and sleet. Total ice
  accumulations of up to one tenth of an inch and total sleet
  accumulations up to one quarter of an inch. Temperatures fall 
  well below freezing Monday night.

* WHERE...Blount, Jefferson, Shelby, Perry and Bibb Counties.

* WHEN...From Monday morning through Monday evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
517 
WWUS44 KBMX 150346
WSWBMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Birmingham AL
946 PM CST Sun Feb 14 2021

...Light freezing rain expected across West Alabama tonight and
then a winter storm with mixed precipitation across the western
half of Central Alabama Monday and Monday evening...

ALZ011>015-022-023-030-031-151215-
/O.CON.KBMX.WS.W.0001.000000T0000Z-210216T0600Z/
Marion-Lamar-Fayette-Winston-Walker-Pickens-Tuscaloosa-Sumter-
Greene-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, Jasper, Carrollton, Tuscaloosa, Livingston, 
and Eutaw
946 PM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
MONDAY NIGHT...

* WHAT...Light freezing rain tonight and heavy mixed 
  precipitation expected Monday and Monday evening. Total ice 
  accumulations of one tenth to four tenths of an inch and total 
  sleet and snow accumulations up to one inch. Temperatures 
  falling into the teens Monday night.

* WHERE...Marion, Lamar, Fayette, Winston, Walker, Pickens,
  Tuscaloosa, Sumter, and Greene Counties.

* WHEN...Through midnight CST Monday night.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice. Travel could be nearly impossible. The hazardous 
  conditions could impact the morning and evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ032-039-151215-
/O.CON.KBMX.WS.W.0001.210215T1200Z-210216T0600Z/
Hale-Marengo-
Including the cities of Greensboro, Moundville, Demopolis, 
and Linden
946 PM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* WHAT...A mixture of freezing rain and sleet expected. Total 
  ice accumulations up to two tenths of an inch and total sleet 
  accumulations up to a one quarter of an inch. Temperatures 
  fall well below freezing by Monday night.

* WHERE...Hale and Marengo Counties.

* WHEN...From 6 AM Monday to midnight CST Monday night.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

ALZ017-024-025-033-034-151215-
/O.CON.KBMX.WS.A.0002.210215T1500Z-210216T0600Z/
Blount-Jefferson-Shelby-Perry-Bibb-
Including the cities of Oneonta, Birmingham, Hoover, Columbiana, 
Pelham, Alabaster, Marion, and Centreville
946 PM CST Sun Feb 14 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM 9 AM CST MONDAY
THROUGH MONDAY EVENING...

* WHAT...A mixture of freezing rain and sleet. Total ice 
  accumulations of up to one tenth of an inch and total sleet 
  accumulations up to one quarter of an inch. Temperatures fall 
  well below freezing Monday night.

* WHERE...Blount, Jefferson, Shelby, Perry, and Bibb Counties.

* WHEN...From Monday morning through Monday evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
588 
WWUS44 KBMX 150949
WSWBMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Birmingham AL
349 AM CST Mon Feb 15 2021

...Significant freezing rain event today especially over far
northwest Central Alabama...

ALZ025-151100-
/O.CAN.KBMX.WS.A.0002.210215T1500Z-210216T0600Z/
Shelby-
Including the cities of Columbiana, Pelham, and Alabaster
349 AM CST Mon Feb 15 2021

...WINTER STORM WATCH IS CANCELLED...

While rain may briefly change over to freezing rain or sleet
before ending by early evening, ice accumulations are not 
expected at this time. However, temperatures falling below 
freezing tonight will re-freeze any remaining water on roadways, 
resulting in dangerous black ice overnight and Tuesday morning.

$$

ALZ011>014-022-152215-
/O.UPG.KBMX.WS.W.0001.000000T0000Z-210216T0600Z/
/O.NEW.KBMX.IS.W.0001.210215T0949Z-210216T0300Z/
/O.NEW.KBMX.WC.Y.0001.210216T0600Z-210216T1500Z/
Marion-Lamar-Fayette-Winston-Pickens-
Including the cities of Hamilton, Sulligent, Vernon, Fayette, 
Double Springs, and Carrollton
349 AM CST Mon Feb 15 2021

...ICE STORM WARNING IN EFFECT UNTIL 9 PM CST THIS EVENING...
...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CST TUESDAY...

* WHAT...For the Ice Storm Warning, significant icing. Storm total
  ice accumulations of quarter to a half inch. Light sleet and
  snow accumulations up to a half inch. For the Wind Chill 
  Advisory, very cold wind chills expected. Wind chills as low as 
  5 below zero.

* WHERE...Marion, Lamar, Fayette, Winston and Pickens Counties.

* WHEN...For the Ice Storm Warning, until 9 PM CST this evening. 
  For the Wind Chill Advisory, from midnight tonight to 9 AM CST 
  Tuesday.

* IMPACTS...Power outages and tree damage are likely due to the
  ice. Travel could be nearly impossible. The hazardous conditions
  will impact the morning and evening commute. The cold wind 
  chills could result in hypothermia if precautions are not taken.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel is strongly discouraged. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. Prepare for possible power outages. 

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

ALZ030-031-152215-
/O.NEW.KBMX.WC.Y.0001.210216T0600Z-210216T1500Z/
/O.EXT.KBMX.WS.W.0001.000000T0000Z-210216T0300Z/
Sumter-Greene-
Including the cities of Livingston and Eutaw
349 AM CST Mon Feb 15 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CST TUESDAY...

* WHAT...For the Winter Storm Warning, significant icing. 
  Additional ice accumulations of one tenth to one quarter of an 
  inch. For the Wind Chill Advisory, very cold wind chills 
  expected. Wind chills as low as zero.

* WHERE...Sumter and Greene Counties.

* WHEN...For the Winter Storm Warning, until 9 PM CST this 
  evening. For the Wind Chill Advisory, from midnight tonight to 
  9 AM CST Tuesday.

* IMPACTS...Difficult travel conditions are possible. The
  hazardous conditions could impact the morning and evening 
  commute. The cold wind chills could result in hypothermia if 
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Prepare for possible power
outages. 

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

ALZ015-023-152215-
/O.EXT.KBMX.WS.W.0001.000000T0000Z-210216T0300Z/
Walker-Tuscaloosa-
Including the cities of Jasper and Tuscaloosa
349 AM CST Mon Feb 15 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Freezing rain expected today, possibly mixed with sleet.
  Total ice accumulations of one tenth to three tenths of an 
  inch. Temperatures falling into the teens Monday night with wind
  chills in the single digits.

* WHERE...Walker and Tuscaloosa Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice. Travel could be nearly impossible. The hazardous 
  conditions could impact the morning and evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

ALZ032-039-152215-
/O.EXT.KBMX.WS.W.0001.210215T1200Z-210216T0300Z/
Hale-Marengo-
Including the cities of Greensboro, Moundville, Demopolis, 
and Linden
349 AM CST Mon Feb 15 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Freezing rain expected, possibly mixed with sleet. Total
  ice accumulations up to two tenths of an inch. Temperatures fall
  well below freezing by Monday night with wind chills in the
  single digits.

* WHERE...Hale and Marengo Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

ALZ017-024-033-034-152215-
/O.UPG.KBMX.WS.A.0002.210215T1500Z-210216T0600Z/
/O.NEW.KBMX.WW.Y.0004.210215T2100Z-210216T0300Z/
Blount-Jefferson-Perry-Bibb-
Including the cities of Oneonta, Birmingham, Hoover, Marion, 
and Centreville
349 AM CST Mon Feb 15 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
9 PM CST THIS EVENING...

* WHAT...Rain may change to to light freezing rain or sleet. 
  Total ice accumulations of a light glaze. Areas that do not 
  receive freezing rain will still have dangerous black ice 
  develop overnight as remaining water on roads freezes. 

* WHERE...Blount, Jefferson, Perry and Bibb Counties.

* WHEN...From 3 PM this afternoon to 9 PM CST this evening.

* IMPACTS...Very slippery sidewalks, roads and bridges are 
  possible. The hazardous conditions could impact the evening 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. Prepare for possible
power outages. 

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 14, 3:36 AM CSTWinter Storm WarningBMXFayette, Greene, Hale, Lamar, Marengo, Marion and 5 more36 hr

Nearby

Winter Storm Watches in Alabama, 2021Every winter storm watch 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.