Alert archive / Alabama / Frost Advisories in 2011
Frost Advisory 3, NWS Mobile, AL
NWS Mobile, AL issued this frost advisory at Oct 29, 2011, 5:32 PM CDT for 8 counties in Alabama; Wayne County, Mississippi. It took effect at Oct 30, 2011, 4:00 AM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 29, 2011, 5:32 PM CDT (22:32 UTC)
- In effect from
- Oct 30, 2011, 4:00 AM CDT
- Expired
- Oct 30, 2011, 7:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS Mobile, AL
Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, Wayne County, MS
The radar
The Mobile radar (KMOB), 132 km from the middle of the area, began a volume at 22:36 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 12:00Z, 10.5 hours before the alert went out and 179 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
- 1642 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -308 m²/s²
- 0-3 km storm-relative helicity
- -72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
246 WWUS74 KMOB 292232 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 532 PM CDT SAT OCT 29 2011 ...FROST ADVISORY IN EFFECT LATE TONIGHT INTO SUNDAY MORNING FOR AREAS GENERALLY NORTH OF HIGHWAY 84 IN SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI... ...STRONG NORTHERLY WINDS EXPECTED ALONG THE COASTAL COUNTIES TODAY... ...FREEZE WATCH IN EFFECT FOR SUNDAY NIGHT... .STRONG HIGH PRESSURE WILL BUILD INTO THE REGION OVERNIGHT WITH BRISK NORTHERLY WINDS BECOMING LIGHT. THE LIGHT WINDS AND COLD TEMPERATURES IN THE MID THIRTIES WELL INLAND WILL ALLOW FOR PATCHY FROST TO DEVELOP LATE TONIGHT GENERALLY NORTH OF HIGHWAY 84 IN SOUTHEAST MISSISSIPPI AND SOUTHWESTERN ALABAMA. SLIGHTLY COLDER TEMPERATURES ARE EXPECTED SUNDAY NIGHT AND A FREEZE WATCH IS IN EFFECT FOR CHOCTAW COUNTY ALABAMA AND WAYNE COUNTY MISSISSIPPI. ALZ051-MSZ067-300645- /O.NEW.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ /O.CON.KMOB.FZ.A.0001.111031T1000Z-111031T1300Z/ CHOCTAW-WAYNE- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...WAYNESBORO 532 PM CDT SAT OCT 29 2011 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY. A FREEZE WATCH REMAINS IN EFFECT LATE SUNDAY NIGHT THROUGH MONDAY MORNING. * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING...THEN OVERNIGHT LOW TEMPERATURES NEAR 30 DEGREES WITH LIGHT WINDS PRODUCE A LIGHT FREEZE EARLY MONDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING AND 5 AM TO 8 AM MONDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS...NEW GROWTH ...AND OTHER SENSITIVE VEGETATION. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$ ALZ052>058-300645- /O.NEW.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- INCLUDING THE CITIES OF...CHATOM...MILLRY...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY 532 PM CDT SAT OCT 29 2011 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY. * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$ ALZ063-064-FLZ002-004-006-292345- /O.CON.KMOB.WI.Y.0011.000000T0000Z-111029T2300Z/ LOWER MOBILE-LOWER BALDWIN-COASTAL ESCAMBIA-COASTAL SANTA ROSA- COASTAL OKALOOSA- INCLUDING THE CITIES OF...MOBILE...TILLMANS CORNER...THEODORE... DAPHNE...FAIRHOPE...FOLEY...SPANISH FORT...FERRY PASS...BRENT... WEST PENSACOLA...BELLVIEW...ENSLEY...MYRTLE GROVE...PACE... MILTON...WRIGHT...NICEVILLE...SEMINOLE...EGLIN AFB 532 PM CDT SAT OCT 29 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING... * EVENT...STRONG NORTHERLY WINDS WITH FREQUENT GUSTS BETWEEN 25 AND 30 MPH ALONG THE COASTAL COUNTIES. * TIMING...UNTIL 6 PM TODAY. * IMPACT...DRIVING DIFFICULT ESPECIALLY FOR HIGH PROFILE VEHICLES. UNSECURED LOOSE OBJECTS CAN BE BLOWN AROUND. SMALL TREE LIMBS CAN BE BROKEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 25 TO 39 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
3 follow-up statements
432 WWUS74 KMOB 292321 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 621 PM CDT SAT OCT 29 2011 ...FROST ADVISORY IN EFFECT LATE TONIGHT INTO SUNDAY MORNING FOR AREAS GENERALLY NORTH OF HIGHWAY 84 IN SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI... ...FREEZE WATCH IN EFFECT FOR SUNDAY NIGHT... .STRONG HIGH PRESSURE WILL BUILD INTO THE REGION OVERNIGHT WITH WINDS BECOMING LIGHT. THE LIGHT WINDS AND COLD TEMPERATURES IN THE MID THIRTIES WELL INLAND WILL ALLOW FOR PATCHY FROST TO DEVELOP LATE TONIGHT GENERALLY NORTH OF HIGHWAY 84 IN SOUTHEAST MISSISSIPPI AND SOUTHWESTERN ALABAMA. SLIGHTLY COLDER TEMPERATURES ARE EXPECTED SUNDAY NIGHT AND A FREEZE WATCH IS IN EFFECT FOR CHOCTAW COUNTY ALABAMA AND WAYNE COUNTY MISSISSIPPI. ALZ063-064-FLZ002-004-006-300030- /O.EXP.KMOB.WI.Y.0011.000000T0000Z-111029T2300Z/ LOWER MOBILE-LOWER BALDWIN-COASTAL ESCAMBIA-COASTAL SANTA ROSA- COASTAL OKALOOSA- INCLUDING THE CITIES OF...MOBILE...TILLMANS CORNER...THEODORE... DAPHNE...FAIRHOPE...FOLEY...SPANISH FORT...FERRY PASS...BRENT... WEST PENSACOLA...BELLVIEW...ENSLEY...MYRTLE GROVE...PACE... MILTON...WRIGHT...NICEVILLE...SEMINOLE...EGLIN AFB 621 PM CDT SAT OCT 29 2011 ...WIND ADVISORY HAS EXPIRED... BRISK NORTHERLY WINDS HAVE SUBSIDED WITH GENERALLY LIGHT WINDS EXPECTED OVERNIGHT. $$ ALZ051-MSZ067-300730- /O.CON.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ /O.CON.KMOB.FZ.A.0001.111031T1000Z-111031T1300Z/ CHOCTAW-WAYNE- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...WAYNESBORO 621 PM CDT SAT OCT 29 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING...THEN OVERNIGHT LOW TEMPERATURES NEAR 30 DEGREES WITH LIGHT WINDS PRODUCE A LIGHT FREEZE EARLY MONDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING AND 5 AM TO 8 AM MONDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS...NEW GROWTH ...AND OTHER SENSITIVE VEGETATION. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$ ALZ052>058-300730- /O.CON.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- INCLUDING THE CITIES OF...CHATOM...MILLRY...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY 621 PM CDT SAT OCT 29 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$
831 WWUS74 KMOB 300449 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 1149 PM CDT SAT OCT 29 2011 ...FROST ADVISORY IN EFFECT LATE TONIGHT INTO SUNDAY MORNING FOR AREAS GENERALLY NORTH OF HIGHWAY 84 IN SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI... ...FREEZE WATCH IN EFFECT FOR SUNDAY NIGHT... .STRONG HIGH PRESSURE WILL BUILD INTO THE REGION OVERNIGHT WITH WINDS BECOMING LIGHT. THE LIGHT WINDS AND COLD TEMPERATURES IN THE MID THIRTIES WELL INLAND WILL ALLOW FOR PATCHY FROST TO DEVELOP LATE TONIGHT GENERALLY NORTH OF HIGHWAY 84 IN SOUTHEAST MISSISSIPPI AND SOUTHWESTERN ALABAMA. SLIGHTLY COLDER TEMPERATURES ARE EXPECTED SUNDAY NIGHT AND A FREEZE WATCH IS IN EFFECT FOR CHOCTAW COUNTY ALABAMA AND WAYNE COUNTY MISSISSIPPI. ALZ051-MSZ067-301300- /O.CON.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ /O.CON.KMOB.FZ.A.0001.111031T1000Z-111031T1300Z/ CHOCTAW-WAYNE- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...WAYNESBORO 1149 PM CDT SAT OCT 29 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING...THEN OVERNIGHT LOW TEMPERATURES NEAR 30 DEGREES WITH LIGHT WINDS PRODUCE A LIGHT FREEZE EARLY MONDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING AND 5 AM TO 8 AM MONDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS...NEW GROWTH ...AND OTHER SENSITIVE VEGETATION. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$ ALZ052>058-301300- /O.CON.KMOB.FR.Y.0003.111030T0900Z-111030T1400Z/ WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- INCLUDING THE CITIES OF...CHATOM...MILLRY...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY 1149 PM CDT SAT OCT 29 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM CDT SUNDAY... * EVENT...OVERNIGHT LOW TEMPERATURES IN THE MID THIRTIES AND LIGHT WINDS PRODUCE PATCHY FROST EARLY SUNDAY MORNING. * TIMING...4 AM TO 9 AM SUNDAY MORNING. * IMPACT...MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED OR SUFFER FROST BURN IF LEFT UNCOVERED. && $$
630 WWUS74 KMOB 301245 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 745 AM CDT SUN OCT 30 2011 ...FROST ADVISORY FOR AREAS GENERALLY NORTH OF HIGHWAY 84 IN SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI HAS BEEN CANCELLED... ...FREEZE WATCH IN EFFECT FOR SUNDAY NIGHT... .STRONG HIGH PRESSURE WILL BUILD INTO THE REGION OVERNIGHT WITH WINDS BECOMING LIGHT. THE LIGHT WINDS AND COLD TEMPERATURES IN THE MID THIRTIES WELL INLAND WILL ALLOW FOR PATCHY FROST TO DEVELOP LATE TONIGHT GENERALLY NORTH OF HIGHWAY 84 IN SOUTHEAST MISSISSIPPI AND SOUTHWESTERN ALABAMA. SLIGHTLY COLDER TEMPERATURES ARE EXPECTED SUNDAY NIGHT AND A FREEZE WATCH IS IN EFFECT FOR CHOCTAW COUNTY ALABAMA AND WAYNE COUNTY MISSISSIPPI. ALZ051-MSZ067-302045- /O.CAN.KMOB.FR.Y.0003.000000T0000Z-111030T1400Z/ /O.CON.KMOB.FZ.A.0001.111031T1000Z-111031T1300Z/ CHOCTAW-WAYNE- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...WAYNESBORO 745 AM CDT SUN OCT 30 2011 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING... ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOBILE HAS CANCELLED THE FROST ADVISORY. * TIMING...5 AM TO 8 AM MONDAY MORNING. * IMPACT...A LIGHT FREEZE MAY INJURE OR KILL SENSITIVE PLANTS LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS...NEW GROWTH...AND OTHER SENSITIVE VEGETATION. && $$ ALZ052>058-301345- /O.CAN.KMOB.FR.Y.0003.000000T0000Z-111030T1400Z/ WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW- INCLUDING THE CITIES OF...CHATOM...MILLRY...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY 745 AM CDT SUN OCT 30 2011 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOBILE HAS CANCELLED THE FROST ADVISORY. AS TEMPERATURES WARM INTO THE LOWER 40S BY MID MORNING...LIGHT FROST IS FORECAST TO QUICKLY DISSIPATE. $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 3:06 AM CDT | Wind Advisory | MOB | 15 hr | |
| Oct 29, 3:45 PM CDT | Freeze Watch | MOB | Choctaw | 20 hr |
Nearby
Frost Advisories in Alabama, 2011Frost Advisories in Mississippi, 2011Every frost advisory in 2011
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.