Alert archive / New Hampshire / River Flood Warnings in 2018

River Flood Warning 6, NWS Gray, ME

April 16, 2018Merrimack County, New Hampshire

NWS Gray, ME issued this river flood warning at Apr 16, 2018, 11:45 PM EDT for Merrimack County, New Hampshire. It took effect at Apr 17, 2018, 3:14 AM EDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued
Apr 16, 2018, 11:45 PM EDT (03:45 UTC)
In effect from
Apr 17, 2018, 3:14 AM EDT
Expired
Apr 18, 2018, 8:44 AM EDT
In force
30 hr
Issued by
NWS Gray, ME
Area
Storm-based polygon
Flood severity
Minor

County Merrimack County, NH

The radar

The Portland,ME radar (KGYX), 132 km from the middle of the area, began a volume at 03:45 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 river

Written for the forecast point Suncook River at North Chichester (NCHN3). The gauge peaked at 8.00 ft at Apr 17, 2018, 2:00 PM EDT.

actionminormoderate51004/1704/1804/19
Action stage
6 ft
Minor stage
7 ft
Moderate stage
12 ft
Major stage
16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01089500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 16, 8:27 PM EDTAreal Flood AdvisoryGYXAndroscoggin, Cumberland, Kennebec, Lincoln, Oxford, Sagadahoc and 1 more3 hr
Apr 16, 11:00 PM EDTSmall Craft AdvisoryGYX4 hr
Apr 17, 3:13 AM EDTSmall Craft Advisory for Hazardous SeasGYX7 hr
Apr 17, 10:14 AM EDTSmall Craft AdvisoryGYX34 hr

Nearby

River Flood Warnings in New Hampshire, 2018Every river flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.