Alert archive / Virginia / Frost Advisories in 2021
Frost Advisory 2, NWS Charleston, WV
NWS Charleston, WV issued this frost advisory at Apr 15, 2021, 8:25 PM EDT for Buchanan County, Dickenson County, Virginia. It took effect at Apr 16, 2021, 2:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2021, 8:25 PM EDT (00:25 UTC)
- In effect from
- Apr 16, 2021, 2:00 AM EDT
- Expired
- Apr 16, 2021, 9:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Charleston, WV
Counties Buchanan County, VA, Dickenson County, VA
The radar
The Jackson,KY radar (KJKL), 108 km from the middle of the area, began a volume at 00:29 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
Roanoke, VA (KRNK), launched 00:00Z, 0.4 hours before the alert went out and 239 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
- 1648 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
611 WWUS71 KRLX 160025 NPWRLX URGENT - WEATHER MESSAGE National Weather Service Charleston WV 825 PM EDT Thu Apr 15 2021 VAZ003-004-160830- /O.NEW.KRLX.FR.Y.0002.210416T0600Z-210416T1300Z/ Dickenson-Buchanan- Including the cities of Clintwood, Grundy, and Vansant 825 PM EDT Thu Apr 15 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Dickenson and Buchanan Counties. * WHEN...From 2 AM to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Frost will mainly be in protected valleys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
291 WWUS71 KRLX 160713 NPWRLX URGENT - WEATHER MESSAGE National Weather Service Charleston WV 313 AM EDT Fri Apr 16 2021 VAZ003-004-161300- /O.CON.KRLX.FR.Y.0002.000000T0000Z-210416T1300Z/ Dickenson-Buchanan- Including the cities of Clintwood, Grundy, and Vansant 313 AM EDT Fri Apr 16 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Buchanan and Dickenson Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
280 WWUS71 KRLX 161247 NPWRLX URGENT - WEATHER MESSAGE National Weather Service Charleston WV 847 AM EDT Fri Apr 16 2021 VAZ003-004-161400- /O.EXP.KRLX.FR.Y.0002.000000T0000Z-210416T1300Z/ Dickenson-Buchanan- Including the cities of Clintwood, Grundy, and Vansant 847 AM EDT Fri Apr 16 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING... With temperatures now moderating this morning, there is no longer a threat for frost. The advisory will therefore be allowed to expire. $$
Nearby
Frost Advisories in Virginia, 2021Every frost advisory 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.