Arctic Air from a 1040+ mb high pressure system built into the region from the west providing strong N to NW winds and sub zero temperatures to NE portions of Southern Connecticut. An arctic cold front passed through the region during the morning of February 3, 2023.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OKX wrote it up.
Arctic Air from a 1040+ mb high pressure system built into the region from the west providing strong N to NW winds and sub zero temperatures to NE portions of Southern Connecticut. An arctic cold front passed through the region during the morning of February 3, 2023. Strong cold air advection along with a tightening pressure gradient produced strong winds in an arctic air mass across Southern Connecticut during the evening and a good portion of the overnight into the early morning on February 4, 2023.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New York, NY wrote its last area forecast discussion before the first event at Feb 4, 1:36 AM EST, 9 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
2 extreme cold/wind chill. Local standard time, as filed.
Mesonet station KCTLEDYA40 in Ledyard, CT reported a wind chill of -27 F beginning at 1:44 am. Also, mesonet station KCTGALES8 in Gales Ferry, CT reported a wind chill of -29 F beginning at 1:49 am.
Mesonet station KCTEASTH159 in East Haddam, CT reported a wind chill of -30 F beginning at 1:54 am. Also, mesonet station KCTDEEPR2 in Deep River, CT reported a wind chill of -27 F beginning at 3:09 am.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Connecticut in 2023Every state in 2023This day in weather historyWarnings in Connecticut, February 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1073690, 1073691.