Alert archive / Alabama / Frost Advisories in 2018
Frost Advisory 3, NWS Birmingham, AL
NWS Birmingham, AL issued this frost advisory at Mar 13, 2018, 3:33 AM CDT for 15 counties in Alabama. It took effect at Mar 14, 2018, 12:00 AM CDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Mar 13, 2018, 3:33 AM CDT (08:33 UTC)
- In effect from
- Mar 14, 2018, 12:00 AM CDT
- Expired
- Mar 14, 2018, 10:00 AM CDT
- In force
- 10 hr
- Issued by
- NWS Birmingham, AL
Counties Autauga County, AL, Barbour County, AL, Bullock County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Russell County, AL, Sumter County, AL
The radar
The Maxwell AFB radar (KMXX), 82 km from the middle of the area, began a volume at 08:36 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, 8.6 hours before the alert went out and 92 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1927 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
189 WWUS74 KBMX 130833 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 333 AM CDT Tue Mar 13 2018 ...Freezing Temperatures Possible Tonight and Tomorrow Night... .A colder airmass will settle across the area tonight, putting the northern half of the area generally at or below freezing early Tuesday morning. Further south, temperatures will stay above freezing for most of the area but will still be in the low to mid 30s, resulting in patchy frost. There could be a few spots in the south that drop to 32 degrees but those will be more localized than across the north. Colder conditions are possible for the next few nights as well. ALZ011>015-017>021-024>029-036>038-131800- /O.UPG.KBMX.FZ.A.0002.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FZ.W.0004.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ /O.CON.KBMX.FZ.W.0003.000000T0000Z-180313T1400Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun- Cherokee-Cleburne-Jefferson-Shelby-St. Clair-Talladega-Clay- Randolph-Coosa-Tallapoosa-Chambers- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Rockford, Alexander City, Dadeville, Valley, Lanett, and Lafayette 333 AM CDT Tue Mar 13 2018 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... The National Weather Service in Birmingham has issued a Freeze Warning, which is in effect from midnight tonight to 10 AM CDT Wednesday. A Freeze Watch has also been issued. This Freeze Watch is in effect from late Wednesday night through Thursday morning. The Freeze Watch is no longer in effect. * TEMPERATURE...will be between 28 and 33 degrees overnight tonight. Then temperatures will be between 25 and 32 degrees by Wednesday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ ALZ022-023-034-035-047-131800- /O.UPG.KBMX.FZ.A.0002.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FZ.W.0004.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ /O.CON.KBMX.FR.Y.0002.000000T0000Z-180313T1400Z/ Pickens-Tuscaloosa-Bibb-Chilton-Lee- Including the cities of Carrollton, Tuscaloosa, Centreville, Clanton, Auburn, and Opelika 333 AM CDT Tue Mar 13 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... The National Weather Service in Birmingham has issued a Freeze Warning, which is in effect from midnight tonight to 10 AM CDT Wednesday. A Freeze Watch has also been issued. This Freeze Watch is in effect from late Wednesday night through Thursday morning. The Freeze Watch is no longer in effect. * TEMPERATURE...will be between 32 and 36 degrees overnight tonight. Then temperatures will be between 28 and 33 degrees by Wednesday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ ALZ030>033-039>046-048>050-131800- /O.UPG.KBMX.FZ.A.0002.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FR.Y.0003.180314T0500Z-180314T1500Z/ /O.NEW.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ /O.CON.KBMX.FR.Y.0002.000000T0000Z-180313T1400Z/ Sumter-Greene-Hale-Perry-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Livingston, Eutaw, Greensboro, Moundville, Marion, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 333 AM CDT Tue Mar 13 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... The National Weather Service in Birmingham has issued a Frost Advisory, which is in effect from midnight tonight to 10 AM CDT Wednesday. A Freeze Watch has also been issued. This Freeze Watch is in effect from late Wednesday night through Thursday morning. The Freeze Watch is no longer in effect. * TEMPERATURE...will be between 32 and 36 degrees overnight tonight. Then temperatures will be between 28 and 33 degrees by Wednesday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$
4 follow-up statements
653 WWUS74 KBMX 131510 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 1010 AM CDT Tue Mar 13 2018 ...Freezing Temperatures Possible Tonight and Tomorrow Night... .A colder airmass will remain over Central Alabama tonight, putting the northern two thirds of the area generally at or below freezing early Wednesday morning. Further south, temperatures will stay above freezing for most of the area but will still be in the low to mid 30s, resulting in patchy frost. There could be a few spots in the south that drop to 32 degrees but those will be more localized than across the north. Temperatures will drop into the 27 to 34 degree range again Thursday morning. ALZ011>015-017>029-034>038-047-140300- /O.CON.KBMX.FZ.W.0004.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun- Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair- Talladega-Clay-Randolph-Bibb-Chilton-Coosa-Tallapoosa-Chambers- Lee- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Centreville, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Auburn, and Opelika 1010 AM CDT Tue Mar 13 2018 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...will be between 25 and 32 degrees by Wednesday morning and 27 to 34 degrees on Thursday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ ALZ030>033-039>046-048>050-140300- /O.CON.KBMX.FR.Y.0003.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Sumter-Greene-Hale-Perry-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Livingston, Eutaw, Greensboro, Moundville, Marion, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 1010 AM CDT Tue Mar 13 2018 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...28 and 34 degrees by Wednesday morning. A widespread freeze is not anticipated. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$
799 WWUS74 KBMX 131944 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 244 PM CDT Tue Mar 13 2018 ...Freezing Temperatures again Overnight and possible Wednesday night... .A cold airmass will remain over Central Alabama tonight, putting the northern two thirds of the area generally at or below freezing early Wednesday morning. Further south, temperatures will stay above freezing for most of the area but will still be in the low to mid 30s, resulting in patchy frost. There could be a few spots in the south that drop to 32 degrees but those will be more localized than across the north. Temperatures will drop into the 27 to 34 degree range again Thursday morning. ALZ011>015-017>029-034>038-047-140600- /O.CON.KBMX.FZ.W.0004.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun- Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair- Talladega-Clay-Randolph-Bibb-Chilton-Coosa-Tallapoosa-Chambers- Lee- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Centreville, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Auburn, and Opelika 244 PM CDT Tue Mar 13 2018 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...will be between 25 and 33 degrees by Wednesday morning and 27 to 34 degrees on Thursday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ ALZ030>033-039>046-048>050-140600- /O.CON.KBMX.FR.Y.0003.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Sumter-Greene-Hale-Perry-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Livingston, Eutaw, Greensboro, Moundville, Marion, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 244 PM CDT Tue Mar 13 2018 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...28 and 34 degrees by Wednesday morning. A widespread freeze is not anticipated. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$
203 WWUS74 KBMX 140406 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 1106 PM CDT Tue Mar 13 2018 ...Freezing Temperatures again Overnight and possible Wednesday night... .A cold airmass will remain over Central Alabama tonight, putting the northern two thirds of the area generally at or below freezing early Wednesday morning. Further south, temperatures will stay above freezing for most of the area but will still be in the low to mid 30s, resulting in patchy frost. There could be a few spots in the south that drop to 32 degrees but those will be more localized than across the north. Temperatures will drop into the 27 to 34 degree range again Thursday morning. ALZ011>015-017>029-034>038-047-141600- /O.CON.KBMX.FZ.W.0004.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun- Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair- Talladega-Clay-Randolph-Bibb-Chilton-Coosa-Tallapoosa-Chambers- Lee- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Centreville, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Auburn, and Opelika 1106 PM CDT Tue Mar 13 2018 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...will be between 25 and 33 degrees by Wednesday morning and 27 to 34 degrees on Thursday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. A Freeze Watch means sub freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ ALZ030>033-039>046-048>050-141600- /O.CON.KBMX.FR.Y.0003.180314T0500Z-180314T1500Z/ /O.CON.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ Sumter-Greene-Hale-Perry-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Livingston, Eutaw, Greensboro, Moundville, Marion, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 1106 PM CDT Tue Mar 13 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * TEMPERATURE...28 and 34 degrees by Wednesday morning. A widespread freeze is not anticipated. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$
763 WWUS74 KBMX 140823 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 323 AM CDT Wed Mar 14 2018 ...Freezing Temperatures This Morning and again Thursday Morning... ALZ011>015-017>029-034>038-047-141700- /O.UPG.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ /O.NEW.KBMX.FZ.W.0005.180315T0500Z-180315T1400Z/ /O.CON.KBMX.FZ.W.0004.000000T0000Z-180314T1500Z/ Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun- Cherokee-Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair- Talladega-Clay-Randolph-Bibb-Chilton-Coosa-Tallapoosa-Chambers- Lee- Including the cities of Hamilton, Sulligent, Vernon, Fayette, Double Springs, Jasper, Oneonta, Gadsden, Anniston, Centre, Heflin, Carrollton, Tuscaloosa, Birmingham, Hoover, Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, Sylacauga, Ashland, Roanoke, Centreville, Clanton, Rockford, Alexander City, Dadeville, Valley, Lanett, Lafayette, Auburn, and Opelika 323 AM CDT Wed Mar 14 2018 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT THURSDAY... The National Weather Service in Birmingham has issued a Freeze Warning, which is in effect through 10 am this morning, and again tonight from Midnight to 9 AM CDT Thursday. The Freeze Watch is no longer in effect. * TEMPERATURE...will be between 27 and 33 degrees this morning and 25 to 32 degrees on Thursday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ ALZ030>033-039>046-048>050-141700- /O.UPG.KBMX.FZ.A.0003.180315T0500Z-180315T1400Z/ /O.NEW.KBMX.FZ.W.0005.180315T0500Z-180315T1400Z/ /O.CON.KBMX.FR.Y.0003.000000T0000Z-180314T1500Z/ Sumter-Greene-Hale-Perry-Marengo-Dallas-Autauga-Lowndes-Elmore- Montgomery-Macon-Bullock-Russell-Pike-Barbour- Including the cities of Livingston, Eutaw, Greensboro, Moundville, Marion, Demopolis, Linden, Selma, Prattville, Fort Deposit, Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Phenix City, Troy, and Eufaula 323 AM CDT Wed Mar 14 2018 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT THURSDAY... The National Weather Service in Birmingham has issued a Freeze Warning, which is in effect from midnight tonight to 9 AM CDT Thursday. A Frost Advisory remains in effect through 10 AM CDT this morning. The Freeze Watch is no longer in effect. * TEMPERATURE...31 to 35 degrees this morning and then 28 to 33 degrees by Thursday morning. * IMPACTS...cold temperatures could result in damaging or killing crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. A Freeze Warning means sub freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$
What forecasters said that day
The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Birmingham, AL wrote its last area forecast discussion before this frost advisory went out at Mar 13, 12:17 AM CDT, 3 hours 16 minutes earlier.
Area forecast discussion, Mar 13, 12:17 AM CDT, 3 hours 16 minutes before
Area Forecast Discussion National Weather Service Birmingham AL 1217 AM CDT Tue Mar 13 2018 .UPDATE... For 06Z Aviation. && .SHORT TERM... No changes to the current forecast. Surface low pressure moves away from the area as high pressure builds in. This reduces the gradient enough that the wind will subside. We have already seen the winds beginning to decrease somewhat west, but since gust are still occurring, will leave advisory for the entire area until sunset. These same winds will also subside overnight. Some light winds still expected and the combination of the cold air advection and lighter winds will allow temperatures to drop to near freezing for large part of north central Alabama. Did not change the configuration of the Freeze Warning overnight. Outside the warning area, temperatures still into the 30s with some patchy frost. Minor tweaks the remainder of the period with same extended issues on this run. 75 Previous short-term discussion:Today and Tonight. As of 3 am the cold front has almost exited the forecast area and the best rainfall coverage has ended. We now shift our eyes to the upper low that will begin to swing into the area this morning. Overall colder and drier air will filter in behind the front. Most of the wrap around moisture associated with the upper low, will remain north of Central Alabama through the early morning. If a few showers do move through the northern portion of the area, profiles just off the surface will be cold enough to support a light rain/snow shower. Chances are low and uncertainty high, and will only carry slight chance to chance wording. Ground temperatures are too warm for any accumulation, and no impacts from any light snow showers/flurries are expected. With the upper low swinging through, winds will pick up quite a bit today, so a wind advisory will be issued to account for the winds of 20 to 30 mph and higher gusts. These winds will calm down quite substantially this evening and the colder airmass will begin to settle down into the area. At this point took the consensus of the short term models and knocked a couple of degrees off of that for the lows tonight. This puts the northern half of the area generally at or below freezing, thus a freeze warning will be issued. Further south, temperatures will stay above freezing for most of the area but will still be in the low to mid 30s. Dewpoints will remain above 30 in these areas so patchy frost is possible. So a Frost advisory will be issued for the south as well. There could be a few spots in the south that drop to 32 degrees but those will be more isolated than across the north. 16 .LONG TERM... Tuesday through Monday. Seasonably chilly conditions will continue Tuesday and Wednesday under deep layer northerly to northwesterly flow. A highly amplified pattern will be present over the CONUS with one longwave trough moving onshore along the West Coast and another longwave trough over the eastern CONUS, with a ridge located over the Rockies/High Plains. An upper low will drift eastward from the eastern Great Lakes to the Northeast, while a 'nor'easter occludes near the Canadian Maritimes and high pressure moves from the northern High Plains to the Lower Mississippi Valley. Cold air advection will not be quite as strong Tuesday as today, but highs will still remain in the 50s. A shortwave moving down the back side of the trough will bring a few mid-level clouds during the day on Tuesday and a reinforcing shot of cold air for Tuesday night. There will still be a bit of a pressure gradient over the area Tuesday night allowing for some light northerly winds, but with clear skies and a very dry air mass still think temperatures should cool efficiently (as they did even with some gradient winds last Thursday morning) with cold air advection also assisting. Therefore expect a freeze for all but the most unsheltered locations, and the cooler northern and eastern locations will have no trouble reaching the 20s. A freeze watch has subsequently been issued for Tuesday night for all of Central Alabama. The brunt of the coldest air at 850mb will be east of the area, but 850 mb temperatures Wednesday morning will still be as cold as -8C in the northeastern counties. This results in cooler high temperatures for Wednesday with some upper 40s in the typically cooler northeastern/eastern locations. The surface high will be centered near the Alabama Gulf Coast Wednesday night. This along with a clipper low over the Great Lakes causes the low-level wind direction to become more westerly, but considering the placement of the high and associated calmer winds radiational cooling conditions will overall be the best on this night. A freeze watch will likely be issued for Wednesday night in future updates. A return to more typical spring weather will begin to occur on Thursday. The western CONUS trough will move the central CONUS ridge and eastern CONUS trough eastward. Southwest winds and rising 500mb heights should allow temperatures to warm up nicely into the 60s by Thursday afternoon. Milder conditions are expected Thursday night with southwest winds and some high clouds, but the typically cooler eastern locations could still reach the 30s for lows with 40s elsewhere. Details remain uncertain, but the pattern becomes more unsettled by Friday. Uncertainty is due to varied handling of shortwaves ejecting out of the western CONUS trough. A surface low is expected to develop in the lee of the Colorado Front Range on Thursday, causing a frontal boundary to sharpen as it extends eastward across the Missouri and Ohio Valleys. This low and associated shortwave aloft is expected to weaken as it moves eastward but the ECMWF is slower to weaken it, which allows the front to move closer to the area Friday through the weekend. Meanwhile the GFS is weaker with this system and keeps the front further north. This will determine rain chances and temperatures Friday through the weekend. Starting off on Friday, an axis of enhanced 850-700mb mean RH values combined with warm air advection and increasing dew points should result in at least scattered showers developing. The front will then serve as the main focus for showers and thunderstorms Friday night through the weekend, especially the further north you go. With some instability and deep layer shear along with cool temperatures aloft, there may be the potential for a few stronger storms over the weekend near the front, but fairly weak low-level flow and lack of upper-level forcing suggests nothing particularly organized at this time. Models have been indicating that a low-amplitude trough and associated surface low will move through the Central CONUS during the Monday timeframe, but have shown variability from model-to- model and run-to-run regarding timing and placement of this feature, as well as lingering troughing over eastern Canada and a potentially strengthening subtropical ridge near the Bahamas. This system looks to potentially have more instability to work with than previous systems, so we will keep an eye on the severe potential as it gets closer. But right now it's too early to speculate on any details based on the uncertainties with the system itself and the system before it, and it remains just beyond the 7-day HWO period. 32/Davis && .AVIATION... 06Z TAF Discussion. Overall VFR for the next 24 to 30 hours. Winds have calmed down to less than 5 to 7 kts area wide. Northwesterly winds will increase again after 15Z to around 10 kts with gusts up to 20 kts, before calming back down after 00Z. 16 && .FIRE WEATHER... Rain-free conditions are expected through Thursday. RH values will fall each afternoon due to a dry air mass but remain above critical levels. 20ft winds will be weaker the remainder of the week, generally below 10 mph. No fog is expected for the next few days. KBDI values remain very low due to recent rainfall and will likely remain that way with the upcoming rains, so there are no fire weather concerns. && .PRELIMINARY POINT TEMPS/POPS... Gadsden 54 28 53 28 64 / 0 0 0 0 0 Anniston 55 28 54 28 65 / 0 0 0 0 0 Birmingham 56 31 55 31 67 / 0 0 0 0 0 Tuscaloosa 59 30 58 30 68 / 0 0 0 0 0 Calera 57 31 56 31 67 / 0 0 0 0 0 Auburn 57 32 55 31 65 / 0 0 0 0 0 Montgomery 60 33 59 31 69 / 0 0 0 0 0 Troy 59 33 58 31 68 / 0 0 0 0 0 && .BMX WATCHES/WARNINGS/ADVISORIES/... Frost Advisory until 9 AM CDT this morning for the following counties: Autauga...Barbour...Bibb...Bullock...Chilton... Dallas...Elmore...Greene...Hale...Lee...Lowndes...Macon... Marengo...Montgomery...Perry...Pickens...Pike...Russell... Sumter...Tuscaloosa. Freeze Watch from late tonight through Wednesday morning for the following counties: Autauga...Barbour...Bibb...Blount... Bullock...Calhoun...Chambers...Cherokee...Chilton...Clay... Cleburne...Coosa...Dallas...Elmore...Etowah...Fayette...Greene... Hale...Jefferson...Lamar...Lee...Lowndes...Macon...Marengo... Marion...Montgomery...Perry...Pickens...Pike...Randolph... Russell...Shelby...St. Clair...Sumter...Talladega...Tallapoosa... Tuscaloosa...Walker...Winston. Freeze Warning until 9 AM CDT this morning for the following counties: Blount...Calhoun...Chambers...Cherokee...Clay... Cleburne...Coosa...Etowah...Fayette...Jefferson...Lamar... Marion...Randolph...Shelby...St. Clair...Talladega... Tallapoosa...Walker...Winston. &&
Hazardous weather outlook, Mar 12, 10:00 PM CDT, 5 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Birmingham AL 1000 PM CDT Mon Mar 12 2018 ALZ011>015-017>050-140600- Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee- Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega- Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa- Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Lee-Russell-Pike-Barbour- 1000 PM CDT Mon Mar 12 2018 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. Temperatures will likely fall to 32 degrees or slightly lower for areas along and north of a Fayette to Alabaster to Alexander City line. Further south only isolated locations will approach 32 degrees. Temperatures will rise above freezing by 9 AM Tuesday. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Low temperatures below freezing will be more widespread across all of Central Alabama Wednesday and Thursday mornings with temperatures falling into the upper 20s in some areas. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management is not expected at this time.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 3:33 AM CDT | Freeze Watch | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 24 hr |
| Mar 13, 3:33 AM CDT | Freeze Warning | BMX | Bibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 18 more | 30 hr |
Nearby
Frost Advisories in Alabama, 2018Every frost 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.