Alert archive / Vermont / Frost Advisories in 2021
Frost Advisory 4, NWS Burlington, VT
NWS Burlington, VT issued this frost advisory at May 23, 2021, 7:19 PM EDT for Essex County, Vermont. It took effect at May 24, 2021, 2:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- May 23, 2021, 7:19 PM EDT (23:19 UTC)
- In effect from
- May 24, 2021, 2:00 AM EDT
- Expired
- May 24, 2021, 7:20 AM EDT
- In force
- 5 hr
- Issued by
- NWS Burlington, VT
County Essex County, VT
The radar
The Burlington radar (KCXX), 116 km from the middle of the area, began a volume at 23:21 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
Gray, ME (KGYX), launched 12:00Z, 11.3 hours before the alert went out and 150 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
- 5 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
434 WWUS71 KBTV 232319 NPWBTV URGENT - WEATHER MESSAGE National Weather Service Burlington VT 719 PM EDT Sun May 23 2021 VTZ004-241200- /O.NEW.KBTV.FR.Y.0004.210524T0600Z-210524T1200Z/ Essex- Including the city of Island Pond 719 PM EDT Sun May 23 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT MONDAY... * WHAT...Temperatures in the low to mid 30s will result in frost formation. * WHERE...Essex County, Vermont. * WHEN...From 2 AM to 8 AM EDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
1 follow-up statement
230 WWUS71 KBTV 241120 NPWBTV URGENT - WEATHER MESSAGE National Weather Service Burlington VT 720 AM EDT Mon May 24 2021 VTZ004-241230- /O.CAN.KBTV.FR.Y.0004.000000T0000Z-210524T1200Z/ Essex- Including the city of Island Pond 720 AM EDT Mon May 24 2021 ...FROST ADVISORY IS CANCELLED... Temperatures have risen above freezing across the area with the the threat of frost having ended. $$
The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 12:00 PM EDT | Special Weather Statement | BTV | Addison, Chittenden, Grand Isle | 60 min |
Nearby
Frost Advisories in Vermont, 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.