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New London County weather alerts
No active National Weather Service alerts for New London County, Connecticut right now. The most recent was a Frost Advisory that ended Oct 19, 8:00 AM.
29 in the last 30 days 47 in 12 months (since Aug 30) most common: Flash Flood Warning Get alerts on your phone →
Active alerts for New London County
Refreshed every few minutes; times in EDT.
All clear in New London County
No warnings, watches or advisories are in effect. See what is active across the country, or check a neighbouring county below.
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Where
New London County on the map
Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.
Last 30 days
Recent alerts for New London County
| Alert | Issued | Ended | Issued by |
|---|---|---|---|
| Frost Advisory | Oct 18, 2:15 PM | Oct 19, 8:00 AM | Upton NY |
| Freeze Warning | Oct 18, 2:22 AM | Oct 18, 9:00 AM | Upton NY |
| Freeze Warning | Oct 17, 2:54 PM | Oct 18, 9:00 AM | Upton NY |
| Freeze Warning | Oct 17, 2:20 AM | Oct 18, 9:00 AM | Upton NY |
| Special Weather Statement | Oct 16, 6:26 PM | Oct 16, 7:30 PM | Upton NY |
| Freeze Watch | Oct 16, 2:18 PM | Oct 18, 9:00 AM | Upton NY |
| Frost Advisory | Oct 7, 8:58 AM | Oct 7, 9:00 AM | Upton NY |
| Frost Advisory | Oct 7, 3:10 AM | Oct 7, 9:00 AM | Upton NY |
| Frost Advisory | Oct 6, 10:34 PM | Oct 7, 9:00 AM | Upton NY |
| Frost Advisory | Oct 6, 2:40 PM | Oct 7, 9:00 AM | Upton NY |
| Frost Advisory | Oct 6, 7:28 AM | Oct 7, 9:00 AM | Upton NY |
| Frost Advisory | Oct 6, 3:01 AM | Oct 7, 9:00 AM | Upton NY |
| Coastal Flood Statement | Sep 27, 8:57 PM | Sep 28, 1:00 PM | Upton NY |
| Coastal Flood Statement | Sep 27, 8:40 PM | Sep 28, 1:00 PM | Upton NY |
| Coastal Flood Statement | Sep 27, 3:14 PM | Sep 28, 1:00 PM | Upton NY |
| High Wind Warning | Sep 27, 11:32 AM | Sep 27, 12:00 PM | Upton NY |
| Coastal Flood Advisory | Sep 27, 6:02 AM | Sep 27, 6:00 PM | Upton NY |
| Coastal Flood Advisory | Sep 27, 5:36 AM | Sep 27, 6:00 PM | Upton NY |
| High Wind Warning | Sep 27, 3:53 AM | Sep 27, 12:00 PM | Upton NY |
| Coastal Flood Advisory | Sep 26, 4:23 PM | Sep 27, 6:00 PM | Upton NY |
| High Wind Warning | Sep 26, 1:47 PM | Sep 27, 12:00 PM | Upton NY |
| Coastal Flood Advisory | Sep 26, 5:14 AM | Sep 27, 6:00 PM | Upton NY |
| Wind Advisory | Sep 26, 4:40 AM | Sep 27, 6:00 AM | Upton NY |
| Coastal Flood Advisory | Sep 25, 4:44 PM | Sep 27, 6:00 PM | Upton NY |
| Wind Advisory | Sep 25, 2:48 PM | Sep 27, 6:00 AM | Upton NY |
| Coastal Flood Advisory | Sep 25, 5:27 AM | Sep 27, 6:00 PM | Upton NY |
| Wind Advisory | Sep 25, 4:31 AM | Sep 27, 6:00 AM | Upton NY |
| Coastal Flood Advisory | Sep 24, 9:08 PM | Sep 26, 3:00 PM | Upton NY |
| Wind Advisory | Sep 24, 2:29 PM | Sep 27, 6:00 AM | Upton NY |
Pattern
What New London County gets alerted for
Every alert that named New London County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.
Plain English
What these alerts mean
A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.
Frost is expected on the ground. Cover sensitive plants overnight.
Sub-freezing temperatures are imminent. Protect tender plants and outdoor plumbing.
A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.
Sub-freezing temperatures are possible. Be ready to protect plants and pipes.
Sustained winds of 40 mph or more, or gusts of 58 mph or more, are expected. Secure loose objects and expect downed trees and power lines.
Minor coastal flooding is expected, usually around high tide. Expect water on low-lying roads near the shore.
Sustained winds of 30 mph or more, or gusts to 45 mph, are expected. Use caution driving high-profile vehicles.
Flash flooding is occurring or imminent. Move to higher ground; never drive into water covering a road.
Conditions are favourable for flooding. Have a plan in case a warning is issued.
Minor flooding of streets, streams or low-lying areas is expected. Expect ponding on roads and use caution when driving.
Nearby
Alerts near New London County
Neighbouring counties in Connecticut
Questions
About New London County alerts
How do I get New London County weather alerts on my iPhone?
Install Forecast Bar, add New London County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for New London County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.
Where do these alerts come from?
From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names New London County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.
What is the difference between a watch, a warning and an advisory?
A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.
Can I get this data as JSON?
Yes. /weather-alerts/ct/new-london-county.json returns the active alerts, the last 30 days and the 12-month counts for New London County, refreshed every minute. Please cache responses and credit National Weather Service as the source.
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