Alert archive / New York / Freeze Warnings in 2020

Freeze Warning 4, NWS Buffalo, NY

May 9, 202012 counties in New York

NWS Buffalo, NY issued this freeze warning at May 9, 2020, 1:41 PM EDT for 12 counties in New York. It took effect at May 9, 2020, 11:00 PM EDT. It was in force for 9 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
May 9, 2020, 1:41 PM EDT (17:41 UTC)
In effect from
May 9, 2020, 11:00 PM EDT
Expired
May 10, 2020, 7:40 AM EDT
In force
9 hr
Issued by
NWS Buffalo, NY

Counties Cayuga County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Niagara County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Wayne County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 74 km from the middle of the area, began a volume at 17:45 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.7 hours before the alert went out and 71 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, Buffalo Intl Airport, NY at 12:00Z on 2020-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 2020-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.19395878Sfc1 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
948 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

907 
WWUS71 KBUF 091741
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
141 PM EDT Sat May 9 2020

NYZ001>006-010>014-019-085-100145-
/O.NEW.KBUF.FZ.W.0004.200510T0300Z-200510T1400Z/
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Northern Erie-
Genesee-Wyoming-Livingston-Ontario-Chautauqua-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, Newark,
Fair Haven, Oswego, Buffalo, Batavia, Warsaw, Geneseo, 
Canandaigua, Jamestown, Orchard Park, and Springville
141 PM EDT Sat May 9 2020

...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 10 AM EDT
SUNDAY...

* WHAT...Sub-freezing temperatures in the upper 20s to lower 30s
  expected.

* WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, 
  Oswego, Erie, Genesee, Wyoming, Livingston, Ontario, and 
  Chautauqua counties.

* WHEN...From 11 PM this evening to 10 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

TMA
4 follow-up statements
072 
WWUS71 KBUF 092131
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
531 PM EDT Sat May 9 2020

NYZ001>006-010>014-019-085-100600-
/O.CON.KBUF.FZ.W.0004.200510T0300Z-200510T1400Z/
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Northern Erie-
Genesee-Wyoming-Livingston-Ontario-Chautauqua-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, Newark,
Fair Haven, Oswego, Buffalo, Batavia, Warsaw, Geneseo, 
Canandaigua, Jamestown, Orchard Park, and Springville
531 PM EDT Sat May 9 2020

...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
10 AM EDT SUNDAY...

* WHAT...Sub-freezing temperatures in the upper 20s to lower 30s
  expected. 

* WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, 
  Oswego, Erie, Genesee, Wyoming, Livingston, Ontario, and 
  Chautauqua counties.

* WHEN...From 11 PM this evening to 10 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
710 
WWUS71 KBUF 100242
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
1042 PM EDT Sat May 9 2020

NYZ001>006-010>014-019-085-101100-
/O.CON.KBUF.FZ.W.0004.200510T0300Z-200510T1400Z/
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Northern Erie-
Genesee-Wyoming-Livingston-Ontario-Chautauqua-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, Newark,
Fair Haven, Oswego, Buffalo, Batavia, Warsaw, Geneseo, 
Canandaigua, Jamestown, Orchard Park, and Springville
1042 PM EDT Sat May 9 2020

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT SUNDAY...

* WHAT...Sub-freezing temperatures in the upper 20s to lower 30s 
  expected.

* WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, 
  Oswego, Erie, Genesee, Wyoming, Livingston, Ontario, and 
  Chautauqua counties.

* WHEN...Until 10 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
465 
WWUS71 KBUF 101025
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
625 AM EDT Sun May 10 2020

NYZ001>006-010>014-019-085-101400-
/O.CON.KBUF.FZ.W.0004.000000T0000Z-200510T1400Z/
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Northern Erie-
Genesee-Wyoming-Livingston-Ontario-Chautauqua-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, Newark,
Fair Haven, Oswego, Buffalo, Batavia, Warsaw, Geneseo, 
Canandaigua, Jamestown, Orchard Park, and Springville
625 AM EDT Sun May 10 2020

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...

* WHAT...Sub-freezing temperatures in the upper 20s to lower 
  30s early this morning.

* WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, 
  Oswego, Erie, Genesee, Wyoming, Livingston, Ontario, and 
  Chautauqua counties.

* WHEN...Until 10 AM EDT this morning.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
JLA
576 
WWUS71 KBUF 101140
NPWBUF

URGENT - WEATHER MESSAGE
National Weather Service Buffalo NY
740 AM EDT Sun May 10 2020

NYZ001>006-010>014-019-085-101245-
/O.CAN.KBUF.FZ.W.0004.000000T0000Z-200510T1400Z/
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Northern Erie-
Genesee-Wyoming-Livingston-Ontario-Chautauqua-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, Newark,
Fair Haven, Oswego, Buffalo, Batavia, Warsaw, Geneseo, 
Canandaigua, Jamestown, Orchard Park, and Springville
740 AM EDT Sun May 10 2020

...FREEZE WARNING IS CANCELLED...

Temperatures are warming above freezing this morning.

$$

TMA

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 4:17 AM EDTLakeshore Flood WarningBUFCayuga, Jefferson, Oswego, Wayne18 hr

Nearby

Freeze Warnings in New York, 2020Every freeze warning in 2020

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.