Alert archive / Alabama / Frost Advisories in 2012
Frost Advisory 1, NWS Mobile, AL
NWS Mobile, AL issued this frost advisory at Nov 8, 2012, 3:59 PM CST for 9 counties in Alabama. It took effect at Nov 9, 2012, 2:00 AM CST. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Nov 8, 2012, 3:59 PM CST (21:59 UTC)
- In effect from
- Nov 9, 2012, 2:00 AM CST
- Expired
- Nov 9, 2012, 7:00 AM CST
- In force
- 5 hr
- Issued by
- NWS Mobile, AL
Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Wilcox County, AL
The radar
The Mobile radar (KMOB), 147 km from the middle of the area, began a volume at 21:58 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, 10.0 hours before the alert went out and 177 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
- 1026 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
720 WWUS74 KMOB 082159 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 359 PM CST THU NOV 8 2012 ...AREAS OF FROST EXPECTED TO FORM BY LATE TONIGHT... .HIGH PRESSURE BUILDING ACROSS THE REGION TONIGHT WILL ALLOW FOR SOME SIGNIFICANTLY COOLING OVERNIGHT. THE DRIER AND COOLER AIRMASS AND NEARLY CALM WINDS WILL RESULT IN TEMPERATURES FALLING INTO THE MID 30S ACROSS MOST OF THE AREA BY LATE TONIGHT...RESULTING IN AREAS OF FROST. ALZ051-053>060-FLZ001-003>006-090600- /O.NEW.KMOB.FR.Y.0001.121109T0800Z-121109T1300Z/ CHOCTAW-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-ESCAMBIA- COVINGTON-INLAND ESCAMBIA-INLAND SANTA ROSA-COASTAL SANTA ROSA- INLAND OKALOOSA-COASTAL OKALOOSA- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY... ATMORE...BREWTON...EAST BREWTON...ANDALUSIA...OPP...CENTURY... FLOMATON...MOLINO...JAY...PACE...MILTON...CRESTVIEW...WRIGHT... NICEVILLE...SEMINOLE...EGLIN AFB 359 PM CST THU NOV 8 2012 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 7 AM CST FRIDAY. * TEMPERATURE...LOWERING INTO THE MID 30S BY LATE TONIGHT. * IMPACTS...PREMATURELY BUDDING PLANTS...SHRUBS...AND TREES MAY BE SUSCEPTIBLE TO THE FROST. TENDER PLANTS MAY SEE DAMAGE OR BE KILLED IF LEFT OUTSIDE OR PROTECTIVE MEASURES ARE NOT TAKEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
1 follow-up statement
995 WWUS74 KMOB 090306 NPWMOB URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOBILE AL 906 PM CST THU NOV 8 2012 ...AREAS OF FROST EXPECTED TO FORM EARLY FRIDAY MORNING... .HIGH PRESSURE BUILDING ACROSS THE REGION TONIGHT WILL ALLOW FOR SOME SIGNIFICANTLY COOLING OVERNIGHT. THE COOLER AIRMASS AND NEARLY CALM WINDS WILL RESULT IN TEMPERATURES FALLING INTO THE MID 30S ACROSS MOST OF THE AREA BY LATE TONIGHT...RESULTING IN AREAS OF FROST. ALZ051-053>060-FLZ001-003>006-091300- /O.CON.KMOB.FR.Y.0001.121109T0800Z-121109T1300Z/ CHOCTAW-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-ESCAMBIA- COVINGTON-INLAND ESCAMBIA-INLAND SANTA ROSA-COASTAL SANTA ROSA- INLAND OKALOOSA-COASTAL OKALOOSA- INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...JACKSON... THOMASVILLE...GROVE HILL...CAMDEN...PINE HILL...HOMEWOOD... MONROEVILLE...EVERGREEN...GREENVILLE...LUVERNE...BRANTLEY... ATMORE...BREWTON...EAST BREWTON...ANDALUSIA...OPP...CENTURY... FLOMATON...MOLINO...JAY...MILTON...CRESTVIEW 906 PM CST THU NOV 8 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 7 AM CST FRIDAY... * TEMPERATURE...LOWERING INTO THE MID 30S BY LATE TONIGHT. * IMPACTS...PREMATURELY BUDDING PLANTS...SHRUBS...AND TREES MAY BE SUSCEPTIBLE TO THE FROST. TENDER PLANTS MAY SEE DAMAGE OR BE KILLED IF LEFT OUTSIDE OR PROTECTIVE MEASURES ARE NOT TAKEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 7, 9:36 PM CST | Small Craft Advisory | MOB | 6 hr |
Nearby
Frost Advisories in Alabama, 2012Frost Advisories in Florida, 2012Every frost advisory in 2012
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.