Alert archive / Mississippi / Hard Freeze Warnings in 2021
Hard Freeze Warning 2, NWS Mobile, AL
NWS Mobile, AL issued this hard freeze warning at Feb 16, 2021, 9:49 PM CST for Choctaw County, Washington County, Alabama; Greene County, Perry County, Wayne County, Mississippi. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 16, 2021, 9:49 PM CST (03:49 UTC)
- Expired
- Feb 17, 2021, 9:00 AM CST
- In force
- 11 hr
- Issued by
- NWS Mobile, AL
Counties Choctaw County, AL, Washington County, AL, Greene County, MS, Perry County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 95 km from the middle of the area, began a volume at 03:53 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
Jackson, MS (KJAN), launched 00:00Z, 3.8 hours before the alert went out and 171 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
- 1136 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
906 WWUS74 KMOB 170349 NPWMOB URGENT - WEATHER MESSAGE National Weather Service Mobile AL 949 PM CST Tue Feb 16 2021 ALZ051-052-MSZ067-075-076-171200- /O.NEW.KMOB.HZ.W.0002.210217T0349Z-210217T1500Z/ Choctaw-Washington-Wayne-Perry-Greene- Including the cities of Butler, Lisman, Silas, Chatom, Millry, Waynesboro, Beaumont, New Augusta, Richton, Leakesville, and McLain 949 PM CST Tue Feb 16 2021 ...HARD FREEZE WARNING IN EFFECT UNTIL 9 AM CST WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 18. * WHERE...In Alabama, Choctaw and Washington Counties. In Mississippi, Wayne, Perry and Greene Counties. * WHEN...Until 9 AM CST Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
2 follow-up statements
088 WWUS74 KMOB 170608 NPWMOB URGENT - WEATHER MESSAGE National Weather Service Mobile AL 1208 AM CST Wed Feb 17 2021 ALZ051-052-MSZ067-075-076-171500- /O.CON.KMOB.HZ.W.0002.000000T0000Z-210217T1500Z/ Choctaw-Washington-Wayne-Perry-Greene- Including the cities of Butler, Lisman, Silas, Chatom, Millry, Waynesboro, Beaumont, New Augusta, Richton, Leakesville, and McLain 1208 AM CST Wed Feb 17 2021 ...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 18. * WHERE...In Alabama, Choctaw and Washington Counties. In Mississippi, Wayne, Perry and Greene Counties. * WHEN...Until 9 AM CST Wednesday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
407 WWUS74 KMOB 171450 NPWMOB URGENT - WEATHER MESSAGE National Weather Service Mobile AL 850 AM CST Wed Feb 17 2021 ALZ051-052-MSZ067-075-076-171600- /O.EXP.KMOB.HZ.W.0002.000000T0000Z-210217T1500Z/ Choctaw-Washington-Wayne-Perry-Greene- Including the cities of Butler, Lisman, Silas, Chatom, Millry, Waynesboro, Beaumont, New Augusta, Richton, Leakesville, and McLain 850 AM CST Wed Feb 17 2021 ...HARD FREEZE WARNING WILL EXPIRE AT 9 AM CST THIS MORNING... Temperatures have risen into the mid 20s this morning and are expected to rise above the freezing mark over the next couple of hours. The Hard Freeze Warning will be allowed to expire. $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 8:47 PM CST | River Flood Warning | MOB | Choctaw, Clarke, Washington | 8 days |
| Feb 16, 8:51 PM CST | River Flood Warning | MOB | Clarke, Washington | 8 days |
| Feb 16, 9:51 PM CST | Rip Current Statement | MOB | Baldwin, Mobile | 56 hr |
Nearby
Hard Freeze Warnings in Mississippi, 2021Hard Freeze Warnings in Alabama, 2021Every hard freeze warning 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.