Alert archive / Vermont / Frost Advisories in 2021

Frost Advisory 2, NWS Burlington, VT

May 10, 2021Addison County, Rutland County, Vermont

NWS Burlington, VT issued this frost advisory at May 10, 2021, 3:06 PM EDT for Addison County, Rutland County, Vermont. It took effect at May 11, 2021, 2:00 AM EDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 10, 2021, 3:06 PM EDT (19:06 UTC)
In effect from
May 11, 2021, 2:00 AM EDT
Expired
May 11, 2021, 6:14 AM EDT
In force
4 hr
Issued by
NWS Burlington, VT

Counties Addison County, VT, Rutland County, VT

The radar

The Burlington radar (KCXX), 79 km from the middle of the area, began a volume at 19:08 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

Albany, NY (KALY), launched 12:00Z, 7.1 hours before the alert went out and 138 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2021-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
657 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

981 
WWUS71 KBTV 101906
NPWBTV

URGENT - WEATHER MESSAGE
National Weather Service Burlington VT
306 PM EDT Mon May 10 2021

VTZ018-019-111100-
/O.NEW.KBTV.FR.Y.0002.210511T0600Z-210511T1100Z/
Eastern Addison-Eastern Rutland-
Including the cities of Bristol, Ripton, East Wallingford, 
and Killington
306 PM EDT Mon May 10 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM EDT TUESDAY...

* WHAT...Overnight low temperatures from 32 to 36 will result in 
  patchy frost formation.

* WHERE...Eastern Addison and Eastern Rutland Counties.

* WHEN...From 2 AM to 7 AM EDT Tuesday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

93
1 follow-up statement
557 
WWUS71 KBTV 111014
NPWBTV

URGENT - WEATHER MESSAGE
National Weather Service Burlington VT
614 AM EDT Tue May 11 2021

VTZ018-019-111115-
/O.CAN.KBTV.FR.Y.0002.000000T0000Z-210511T1100Z/
Eastern Addison-Eastern Rutland-
Including the cities of Bristol, Ripton, East Wallingford, 
and Killington
614 AM EDT Tue May 11 2021

...FROST ADVISORY IS CANCELLED...

The frost advisory for eastern Addison and eastern Rutland
counties has been cancelled.

$$

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.