Alert archive / New York / Freeze Warnings in 2021
Freeze Warning 4, NWS New York, NY
NWS New York, NY issued this freeze warning at Apr 22, 2021, 4:11 PM EDT for 4 counties in New York; 4 counties in Connecticut; Bergen County, Passaic County, New Jersey. It took effect at Apr 23, 2021, 1:00 AM EDT. It was in force for 8 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
- Apr 22, 2021, 4:11 PM EDT (20:11 UTC)
- In effect from
- Apr 23, 2021, 1:00 AM EDT
- Expired
- Apr 23, 2021, 8:49 AM EDT
- In force
- 8 hr
- Issued by
- NWS New York, NY
Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Bergen County, NJ, Passaic County, NJ, Orange County, NY, Putnam County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 72 km from the middle of the area, began a volume at 20:17 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 12:00Z, 8.2 hours before the alert went out and 72 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
- 1248 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
823 WWUS71 KOKX 222011 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 411 PM EDT Thu Apr 22 2021 CTZ005-006-NJZ002-NYZ067-068-230900- /O.UPG.KOKX.FZ.A.0004.210423T0500Z-210423T1300Z/ /O.NEW.KOKX.FZ.W.0004.210423T0500Z-210423T1300Z/ Northern Fairfield-Northern New Haven-Western Passaic-Orange- Putnam- 411 PM EDT Thu Apr 22 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Western Passaic County. In Connecticut, Northern Fairfield and Northern New Haven Counties. In New York, Orange and Putnam Counties. * WHEN...From 1 AM to 9 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CTZ007-008-NJZ004-103-NYZ069-070-230900- /O.NEW.KOKX.FZ.W.0004.210423T0500Z-210423T1300Z/ Northern Middlesex-Northern New London-Eastern Passaic- Western Bergen-Rockland-Northern Westchester- 411 PM EDT Thu Apr 22 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT FRIDAY... * WHAT...Freezing temperatures as low as 32 expected. * WHERE...In New Jersey, Eastern Passaic and Western Bergen Counties. In Connecticut, Northern Middlesex and Northern New London Counties. In New York, Rockland and Northern Westchester Counties. * WHEN...From 1 AM to 9 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
539 WWUS71 KOKX 230838 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 438 AM EDT Fri Apr 23 2021 CTZ005>008-NJZ002-004-103-NYZ067>070-231300- /O.CON.KOKX.FZ.W.0004.000000T0000Z-210423T1300Z/ Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Western Passaic-Eastern Passaic- Western Bergen-Orange-Putnam-Rockland-Northern Westchester- 438 AM EDT Fri Apr 23 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...Portions of northeast New Jersey, southern Connecticut and southeast New York. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
328 WWUS71 KOKX 231249 NPWOKX URGENT - WEATHER MESSAGE National Weather Service New York NY 849 AM EDT Fri Apr 23 2021 CTZ005>008-NJZ002-004-103-NYZ067>070-231400- /O.CAN.KOKX.FZ.W.0004.000000T0000Z-210423T1300Z/ Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Western Passaic-Eastern Passaic- Western Bergen-Orange-Putnam-Rockland-Northern Westchester- 849 AM EDT Fri Apr 23 2021 ...FREEZE WARNING IS CANCELLED... Temperatures have risen above freezing, therefore the Freeze Warning has been cancelled. $$
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 9:40 AM EDT | Freeze Watch | OKX | Orange, Putnam | 7 hr |
| Apr 22, 7:38 PM EDT | Small Craft Advisory | OKX | 27 hr |
Nearby
Freeze Warnings in New York, 2021Freeze Warnings in Connecticut, 2021Freeze Warnings in New Jersey, 2021Every 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.