Alert archive / Connecticut / Freeze Warnings in 2009

Freeze Warning 5, NWS New York, NY

October 14, 2009Orange County, Putnam County, New York; 4 counties in Connecticut; Passaic County, New Jersey

NWS New York, NY issued this freeze warning at Oct 14, 2009, 3:50 PM EDT for Orange County, Putnam County, New York; 4 counties in Connecticut; Passaic County, New Jersey. It took effect at Oct 15, 2009, 3:00 AM EDT. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 14, 2009, 3:50 PM EDT (19:50 UTC)
In effect from
Oct 15, 2009, 3:00 AM EDT
Expired
Oct 15, 2009, 3:47 AM EDT
In force
47 min
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, Passaic County, NJ, Orange County, NY, Putnam County, NY

The radar

The Brookhaven radar (KOKX), 68 km from the middle of the area, began a volume at 19:55 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

Chatham, MA (KCHH), launched 12:00Z, 7.8 hours before the alert went out and 281 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, Chatham, MA at 12:00Z on 2009-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 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, Chatham, MA at 12:00Z on 2009-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -111 square meters per square second.1939587897117136156Sfc1 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
4 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1039 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
-111 m²/s²
0-3 km storm-relative helicity
-69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 6:49 AM EDTGale WatchOKX21 hr
Oct 14, 4:08 PM EDTCoastal Flood WatchOKXBronx, Kings, New York, Richmond, Suffolk, Westchester24 hr

Nearby

Freeze Warnings in Connecticut, 2009Freeze Warnings in New York, 2009Freeze Warnings in New Jersey, 2009Every freeze warning in 2009

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.