Alert archive / Alabama / Wind Advisories in 2012
Wind Advisory 1, NWS Birmingham, AL
NWS Birmingham, AL issued this wind advisory at Jan 2, 2012, 3:39 AM CST for 11 counties in Alabama. It took effect at Jan 2, 2012, 12:00 PM CST. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jan 2, 2012, 3:39 AM CST (09:39 UTC)
- In effect from
- Jan 2, 2012, 12:00 PM CST
- Expired
- Jan 2, 2012, 6:00 PM CST
- In force
- 6 hr
- Issued by
- NWS Birmingham, AL
Counties Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Etowah County, AL, Jefferson County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL
The radar
The Birmingham radar (KBMX), 83 km from the middle of the area, began a volume at 09:36 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, 9.7 hours before the alert went out and 83 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
- 2139 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- -29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
492 WWUS74 KBMX 020939 NPWBMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BIRMINGHAM AL 339 AM CST MON JAN 2 2012 ...STRONG AND GUSTY WINDS EXPECTED ACROSS THE NORTHEAST PORTIONS OF CENTRAL ALABAMA THIS AFTERNOON GENERALLY ALONG...NORTH AND EAST OF A BIRMINGHAM...TO CALERA...TO ROANOKE LINE... .A TIGHTENING SURFACE PRESSURE GRADIENT BEHIND THE COLD FRONT THAT MOVED THROUGH ON SUNDAY WILL CAUSE SUSTAINED WINDS OF UP TO 20 TO 30 MPH ALONG WITH SOME GUSTS OF UP TO 30 TO 40 MPH THIS AFTERNOON. ALZ017>021-024>029-030000- /O.NEW.KBMX.WI.Y.0001.120102T1800Z-120103T0000Z/ BLOUNT-ETOWAH-CALHOUN-CHEROKEE-CLEBURNE-JEFFERSON-SHELBY- ST. CLAIR-TALLADEGA-CLAY-RANDOLPH- INCLUDING THE CITIES OF...ONEONTA...GADSDEN...ANNISTON...CENTRE... HEFLIN...BIRMINGHAM...HOOVER...COLUMBIANA...PELHAM...ALABASTER... PELL CITY...MOODY...TALLADEGA...SYLACAUGA...ASHLAND...ROANOKE 339 AM CST MON JAN 2 2012 ...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING. * TIMING...BEGINNING AROUND NOONTIME AND DIMINISHING LATE THIS AFTERNOON SHORTLY AFTER SUNSET. * WINDS...NORTHWEST WINDS SUSTAINED UP TO 20 TO 30 MPH...WITH GUSTS UP TO 30 TO 40 MPH AT TIMES. * LOCATIONS...GENERALLY ALONG...NORTH AND EAST OF A BIRMINGHAM... TO CALERA...TO ROANOKE LINE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 24 MPH AND HIGHER... OR WIND GUSTS OF 36 MPH AND HIGHER...ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ 08/MNK
1 follow-up statement
184 WWUS74 KBMX 030005 NPWBMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BIRMINGHAM AL 605 PM CST MON JAN 2 2012 ...STRONG AND GUSTY WINDS EXPECTED ACROSS THE NORTHEAST PORTIONS OF CENTRAL ALABAMA THROUGH EARLY THIS EVENING GENERALLY ALONG...NORTH AND EAST OF A BIRMINGHAM...TO CALERA...TO ROANOKE LINE... .A TIGHTENING SURFACE PRESSURE GRADIENT BEHIND THE COLD FRONT THAT MOVED THROUGH ON SUNDAY WILL CAUSE SUSTAINED WINDS OF UP TO 20 TO 30 MPH ALONG WITH SOME GUSTS OF UP TO 30 TO 40 MPH. ALZ017>021-024>029-030300- /O.EXP.KBMX.WI.Y.0001.000000T0000Z-120103T0000Z/ /O.NEW.KBMX.WI.Y.0002.120103T0005Z-120103T0300Z/ BLOUNT-ETOWAH-CALHOUN-CHEROKEE-CLEBURNE-JEFFERSON-SHELBY- ST. CLAIR-TALLADEGA-CLAY-RANDOLPH- INCLUDING THE CITIES OF...ONEONTA...GADSDEN...ANNISTON...CENTRE... HEFLIN...BIRMINGHAM...HOOVER...COLUMBIANA...PELHAM...ALABASTER... PELL CITY...MOODY...TALLADEGA...SYLACAUGA...ASHLAND...ROANOKE 605 PM CST MON JAN 2 2012 ...WIND ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING... ...WIND ADVISORY HAS EXPIRED... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM CST THIS EVENING. * TIMING...GUSTS DIMINISHING THIS EVENING. * WINDS...NORTHWEST WINDS SUSTAINED UP TO 20 TO 30 MPH...WITH GUSTS UP TO 30 TO 40 MPH AT TIMES. * LOCATIONS...GENERALLY ALONG...NORTH AND EAST OF A BIRMINGHAM... TO CALERA...TO ROANOKE LINE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 24 MPH AND HIGHER... OR WIND GUSTS OF 36 MPH AND HIGHER...ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 4:51 AM CST | Red Flag Warning | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 12 hr |
| Jan 2, 2:35 PM CST | Red Flag Warning | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 26 hr |
Nearby
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.