Alert archive / Alabama / Wind Advisories in 2020
Wind Advisory 13, NWS Birmingham, AL
NWS Birmingham, AL issued this wind advisory at Oct 28, 2020, 10:15 AM CDT for 4 counties in Alabama. It took effect at Oct 28, 2020, 7:00 PM CDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Oct 28, 2020, 10:15 AM CDT (15:15 UTC)
- In effect from
- Oct 28, 2020, 7:00 PM CDT
- Expired
- Oct 29, 2020, 5:57 AM CDT
- In force
- 11 hr
- Issued by
- NWS Birmingham, AL
Counties Blount County, AL, Fayette County, AL, Pickens County, AL, Walker County, AL
The radar
The Birmingham radar (KBMX), 84 km from the middle of the area, began a volume at 15:15 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, 3.3 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
- 134 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
042 WWUS74 KBMX 281515 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 1015 AM CDT Wed Oct 28 2020 ALZ013-015-017-022-290200- /O.NEW.KBMX.WI.Y.0013.201029T0000Z-201029T1200Z/ Fayette-Walker-Blount-Pickens- Including the cities of Fayette, Jasper, Oneonta, and Carrollton 1015 AM CDT Wed Oct 28 2020 ...WIND ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM CDT THURSDAY... * WHAT...Southeast winds will increase to 15 to 25 mph with gusts up to 35 mph. * WHERE...Fayette, Walker, Blount and Pickens Counties. * WHEN...From 7 PM this evening to 7 AM CDT Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
469 WWUS74 KBMX 290019 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL 719 PM CDT Wed Oct 28 2020 ALZ013-015-017-022-291200- /O.CON.KBMX.WI.Y.0013.000000T0000Z-201029T1200Z/ Fayette-Walker-Blount-Pickens- Including the cities of Fayette, Jasper, Oneonta, and Carrollton 719 PM CDT Wed Oct 28 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT THURSDAY... * WHAT...Southeast winds will initially be noted at 10 to 20 mph with gusts up to 35 mph. Winds will shift to the northeast toward midnight then to the west during the pre-dawn hours as Zeta moves northeast across Central Alabama. * WHERE...Walker, Blount, Pickens and Fayette Counties. * WHEN...Until 7 AM CDT Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
540 WWUS74 KBMX 291057 NPWBMX URGENT - WEATHER MESSAGE National Weather Service Birmingham AL Issued by National Weather Service Huntsville AL 557 AM CDT Thu Oct 29 2020 ALZ013-015-017-022-291200- /O.CAN.KBMX.WI.Y.0013.000000T0000Z-201029T1200Z/ Fayette-Walker-Blount-Pickens- Including the cities of Fayette, Jasper, Oneonta, and Carrollton 557 AM CDT Thu Oct 29 2020 ...WIND ADVISORY IS CANCELLED... Both sustained winds and wind gusts has subsided to below advisory criteria. $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 28, 10:06 AM CDT | Tropical Storm Warning | BMX | Autauga, Barbour, Bibb, Bullock, Calhoun, Chambers and 26 more | 21 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.