Alert archive / New York / Frost Advisories in 2012

Frost Advisory 2, NWS New York, NY

April 28, 2012Rockland County, Westchester County, New York; Passaic County, New Jersey

NWS New York, NY issued this frost advisory at Apr 28, 2012, 3:15 PM EDT for Rockland County, Westchester County, New York; Passaic County, New Jersey. It took effect at Apr 29, 2012, 2:00 AM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Apr 28, 2012, 3:15 PM EDT (19:15 UTC)
In effect from
Apr 29, 2012, 2:00 AM EDT
Expired
Apr 29, 2012, 8:00 AM EDT
In force
6 hr
Issued by
NWS New York, NY

Counties Passaic County, NJ, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 101 km from the middle of the area, began a volume at 19:14 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, 7.3 hours before the alert went out and 101 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, Brookhaven, NY at 12:00Z on 2012-04-28Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2012-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117136Sfc1 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
1245 m above ground
0-6 km bulk shear
96 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

769 
WWUS71 KOKX 281915
NPWOKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW YORK NY
315 PM EDT SAT APR 28 2012

CTZ005>008-NYZ067-068-290400-
/O.UPG.KOKX.FZ.A.0005.120429T0600Z-120429T1200Z/
/O.NEW.KOKX.FZ.W.0003.120429T0600Z-120429T1200Z/
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-ORANGE-PUTNAM-
315 PM EDT SAT APR 28 2012

...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY...

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY. THE
FREEZE WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...INTERIOR SOUTHERN CONNECTICUT AND PORTIONS OF THE
  LOWER HUDSON VALLEY.

* HAZARDS...FREEZING TEMPERATURES.

* TEMPERATURES...AROUND 30.

* TIMING...2 AM AND 8 AM SUNDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS BELOW FREEZING TEMPERATURES ARE IMMINENT
OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

NJZ002-NYZ069-070-290400-
/O.UPG.KOKX.FZ.A.0005.120429T0600Z-120429T1200Z/
/O.NEW.KOKX.FR.Y.0002.120429T0600Z-120429T1200Z/
WESTERN PASSAIC-ROCKLAND-NORTHERN WESTCHESTER-
315 PM EDT SAT APR 28 2012

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY...

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY. THE
FREEZE WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...PORTIONS OF THE LOWER HUDSON VALLEY AND NORTHEAST
  NEW JERSEY.

* HAZARDS...AREAS OF FROST.

* TEMPERATURES...IN THE LOWER TO MID 30S.

* TIMING...2 AM AND 8 AM SUNDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS SHOULD BE PROTECTED.

&&

$$

PW
3 follow-up statements
472 
WWUS71 KOKX 290159
NPWOKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW YORK NY
959 PM EDT SAT APR 28 2012

CTZ005>008-NYZ067-068-291000-
/O.CON.KOKX.FZ.W.0003.120429T0600Z-120429T1200Z/
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-ORANGE-PUTNAM-
959 PM EDT SAT APR 28 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* LOCATIONS...INTERIOR SOUTHERN CONNECTICUT AND PORTIONS OF THE 
  LOWER HUDSON VALLEY. 

* HAZARDS...FREEZING TEMPERATURES.

* TEMPERATURES...AROUND 30.

* TIMING...2 AM AND 8 AM SUNDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS BELOW FREEZING TEMPERATURES ARE IMMINENT
OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

NJZ002-NYZ069-070-291000-
/O.CON.KOKX.FR.Y.0002.120429T0600Z-120429T1200Z/
WESTERN PASSAIC-ROCKLAND-NORTHERN WESTCHESTER-
959 PM EDT SAT APR 28 2012

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* LOCATIONS...PORTIONS OF THE LOWER HUDSON VALLEY AND NORTHEAST 
  NEW JERSEY. 

* HAZARDS...AREAS OF FROST.

* TEMPERATURES...IN THE LOWER TO MID 30S.

* TIMING...2 AM AND 8 AM SUNDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS SHOULD BE PROTECTED.

&&

$$
708 
WWUS71 KOKX 290747
NPWOKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW YORK NY
347 AM EDT SUN APR 29 2012

CTZ005>008-NYZ067-068-291600-
/O.NEW.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
/O.CON.KOKX.FZ.W.0003.000000T0000Z-120429T1200Z/
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-ORANGE-PUTNAM-
347 AM EDT SUN APR 29 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A FREEZE WATCH...
WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING.

* LOCATIONS...INTERIOR SOUTHERN CONNECTICUT AND PORTIONS OF THE 
  LOWER HUDSON VALLEY. 

* HAZARDS...FREEZING TEMPERATURES THIS MORNING. A HARD FREEZE IS
  POSSIBLE TONIGHT.

* TEMPERATURES...UPPER 20S TO AROUND 30 EARLY THIS MORNING. MID TO
  UPPER 20S TONIGHT.

* TIMING...THROUGH 8 AM THIS MORNING AND 1 AM TO 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE
  IF NOT PROTECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS BELOW FREEZING TEMPERATURES ARE IMMINENT
OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

NJZ002-NYZ069-070-291600-
/O.NEW.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
/O.CON.KOKX.FR.Y.0002.000000T0000Z-120429T1200Z/
WESTERN PASSAIC-ROCKLAND-NORTHERN WESTCHESTER-
347 AM EDT SUN APR 29 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A FREEZE WATCH...
WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING.

* LOCATIONS...PORTIONS OF THE LOWER HUDSON VALLEY AND NORTHEAST 
  NEW JERSEY. 

* HAZARDS...AREAS OF FROST EARLY THIS MORNING. FREEZING
  TEMPERATURES TONIGHT.

* TEMPERATURES...IN THE LOWER TO MID 30S EARLY THIS MORNING.
  AROUND 32 TONIGHT.

* TIMING...THROUGH 8 AM THIS MORNING AND 1 AM AND 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS SHOULD BE PROTECTED.

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

CTZ009>012-NJZ004-103-105-107-NYZ079-081-291600-
/O.NEW.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN-SOUTHERN MIDDLESEX-
SOUTHERN NEW LONDON-EASTERN PASSAIC-WESTERN BERGEN-WESTERN ESSEX-
WESTERN UNION-NORTHEASTERN SUFFOLK-SOUTHEASTERN SUFFOLK-
347 AM EDT SUN APR 29 2012

...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN UPTON HAS ISSUED A FREEZE WATCH...
WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING.

* LOCATIONS...COASTAL CONNECTICUT...EASTERN LONG ISLAND AND
  PORTIONS OF NORTHEAST NEW JERSEY.

* HAZARDS...FREEZING TEMPERATURES.

* TEMPERATURES...UPPER 20S TO LOWER 30S. MID 20S IN THE PINE
  BARRENS OF LONG ISLAND.

* TIMING...1 AM TO 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$
147 
WWUS71 KOKX 291202
NPWOKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW YORK NY
802 AM EDT SUN APR 29 2012

CTZ005>008-NYZ067-068-292000-
/O.EXP.KOKX.FZ.W.0003.000000T0000Z-120429T1200Z/
/O.CON.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-
NORTHERN NEW LONDON-ORANGE-PUTNAM-
802 AM EDT SUN APR 29 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY MORNING...
...FREEZE WARNING HAS EXPIRED...

* LOCATIONS...INTERIOR SOUTHERN CONNECTICUT AND PORTIONS OF THE 
  LOWER HUDSON VALLEY. 

* HAZARDS...A HARD FREEZE IS POSSIBLE TONIGHT.

* TEMPERATURES...IN THE MID 40S.

* TIMING...1 AM TO 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

NJZ002-NYZ069-070-292000-
/O.EXP.KOKX.FR.Y.0002.000000T0000Z-120429T1200Z/
/O.CON.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
WESTERN PASSAIC-ROCKLAND-NORTHERN WESTCHESTER-
802 AM EDT SUN APR 29 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY MORNING...
...FROST ADVISORY HAS EXPIRED...

* LOCATIONS...PORTIONS OF THE LOWER HUDSON VALLEY AND NORTHEAST 
  NEW JERSEY. 

* HAZARDS...FREEZING TEMPERATURES EXPECTED TONIGHT.

* TEMPERATURES...IN THE MID 40S.

* TIMING...1 AM AND 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

CTZ009>012-NJZ004-103-105-107-NYZ079-081-292000-
/O.CON.KOKX.FZ.A.0006.120430T0500Z-120430T1200Z/
SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN-SOUTHERN MIDDLESEX-
SOUTHERN NEW LONDON-EASTERN PASSAIC-WESTERN BERGEN-WESTERN ESSEX-
WESTERN UNION-NORTHEASTERN SUFFOLK-SOUTHEASTERN SUFFOLK-
802 AM EDT SUN APR 29 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY MORNING...

* LOCATIONS...COASTAL CONNECTICUT...EASTERN LONG ISLAND AND 
  PORTIONS OF NORTHEAST NEW JERSEY. 

* HAZARDS...FREEZING TEMPERATURES.

* TEMPERATURES...IN THE MID 30S.

* TIMING...1 AM TO 8 AM MONDAY.

* IMPACTS...ANY OUTDOOR...SENSITIVE VEGETATION MAY SUFFER DAMAGE 
  IF NOT PROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS BELOW FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 3:51 AM EDTFreeze WatchOKXOrange, Putnam, Rockland, Westchester11 hr
Apr 28, 3:15 PM EDTFreeze WarningOKXOrange, Putnam17 hr

Nearby

Frost Advisories in New York, 2012Frost Advisories in New Jersey, 2012Every frost advisory in 2012

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.