Alert archive / New York / Frost Advisories in 2021
Frost Advisory 6, NWS New York, NY
NWS New York, NY issued this frost advisory at Nov 7, 2021, 3:13 AM EST for Nassau County, New York. It took effect at Nov 7, 2021, 11:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 7, 2021, 3:13 AM EST (08:13 UTC)
- In effect from
- Nov 7, 2021, 11:00 PM EST
- Expired
- Nov 7, 2021, 3:40 PM EST
- In force
- Issued by
- NWS New York, NY
County Nassau County, NY
The radar
The Brookhaven radar (KOKX), 62 km from the middle of the area, began a volume at 08:17 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
Brookhaven, NY (KOKX), launched 00:00Z, 8.2 hours before the alert went out and 62 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
- 1309 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
714 WWUS71 KOKX 070813 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 313 AM EST Sun Nov 7 2021 NYZ179-072100- /O.NEW.KOKX.FR.Y.0006.211108T0400Z-211108T1300Z/ /O.CON.KOKX.FR.Y.0005.000000T0000Z-211107T1300Z/ Southern Nassau- 313 AM EST Sun Nov 7 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EST MONDAY... * WHAT...Temperatures as low as the mid 30s will result in frost formation. * WHERE...Southern Nassau County. * WHEN...Until 8 AM EST this morning, and again from 11 PM this evening to 8 AM EST Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
1 follow-up statement
285 WWUS71 KOKX 072040 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 340 PM EST Sun Nov 7 2021 NYZ179-072145- /O.CAN.KOKX.FR.Y.0006.211108T0400Z-211108T1300Z/ Southern Nassau- 340 PM EST Sun Nov 7 2021 ...FROST ADVISORY IS CANCELLED... Warmer temperatures are forecast for tonight and widespread frost is no longer expected. $$
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 7, 3:16 AM EST | Small Craft Advisory | OKX | 63 hr | |
| Nov 7, 6:09 PM EST | Coastal Flood Statement | OKX | Bronx, Nassau, Queens, Suffolk | 21 hr |
| Nov 7, 6:09 PM EST | Coastal Flood Advisory | OKX | Kings, Nassau, Queens, Richmond, Westchester | 21 hr |
Nearby
Frost Advisories in New York, 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.