Alert archive / Alabama / Winter Storm Watches in 2021

Winter Storm Watch 1, NWS Huntsville, AL

February 13, 20218 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee

NWS Huntsville, AL issued this winter storm watch at Feb 13, 2021, 2:30 PM CST for 8 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee. It took effect at Feb 14, 2021, 6:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 13, 2021, 2:30 PM CST (20:30 UTC)
In effect from: Feb 14, 2021, 6:00 PM CST
Expired: Feb 14, 2021, 3:46 AM CST
In force
Issued by: NWS Huntsville, AL

Counties Colbert County, AL, Cullman County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 85 km from the middle of the area, began a volume at 20:28 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

Nashville Metro, TN (KBNA), launched 12:00Z, 8.5 hours before the alert went out and 157 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Huntsville, AL wrote its last area forecast discussion before this winter storm watch went out at Feb 13, 11:45 AM CST, 2 hours 45 minutes earlier.

Area forecast discussion, Feb 13, 11:45 AM CST, 2 hours 45 minutes before

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Hazardous weather outlook, Feb 13, 10:14 AM CST, 4 hours 16 minutes before

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In the hours before

Local storm report, Feb 13, 8:55 AM CST, 5 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
855 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     FREEZING RAIN    SEWANEE                 35.20N 85.92W
02/13/2021  M0.17 INCH       FRANKLIN           TN   MESONET

            FREEZING RAIN AND DRIZZLE ACCUMULATIONS OF
            0.02 TO 0.12 WERE MEASURED FROM 10 PM - 8
            AM.

&&

Local storm report, Feb 13, 8:57 AM CST, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
857 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     FREEZING RAIN    8 S FAYETTEVILLE        35.03N 86.56W
02/13/2021  M0.05 INCH       LINCOLN            TN   COCORAHS

            FREEZING RAIN AND DRIZZLE ACCUMULATIONS OF
            UP TO 0.05 WERE MEASURED FROM 10 PM - 8 AM.

&&

Local storm report, Feb 13, 9:08 AM CST, 5 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
908 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0905 AM     ICE STORM        4 W GOOD HOPE           34.10N 86.93W
02/13/2021                   CULLMAN            AL   EMERGENCY MNGR

            FREEZING RAIN ACCUMULATIONS OF 0.30-0.35
            INCHES WERE MEASURED FROM 10 PM - 8 AM. EMA
            REPORTED 1/4 OR MORE OF ICE ACCUMULATION,
            MULTIPLE REPORTS OF TREES DOWN, AND SEVERAL
            ACCIDENTS ON BRIDGES AND OVERPASSES DUE TO
            ICY ROADS.

&&

Local storm report, Feb 13, 9:15 AM CST, 5 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
915 AM CST SAT FEB 13 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     FREEZING RAIN    1 WNW LYNCHBURG         35.29N 86.37W
02/13/2021  E0.05 INCH       MOORE              TN   COCORAHS

            FREEZING RAIN ACCUMULATIONS OF 0.01 TO 0.05
            WERE MEASURED FROM 10 PM - 8 AM.

&&

Local storm report, Feb 13, 10:12 AM CST, 4 hours 18 minutes before

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Local storm report, Feb 13, 1:23 PM CST, 1 hour 7 minutes before

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The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 12, 9:30 PM CST	Winter Weather Advisory	HUN	Colbert, Cullman, Franklin, Jackson, Lauderdale, Lawrence and 4 more	15 hr

Nearby

Winter Storm Watches in Alabama, 2021 Winter Storm Watches in Tennessee, 2021 Every winter storm watch in 2021

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.