Alert archive / New Hampshire / River Flood Warnings in 2011

River Flood Warning 55, NWS Gray, ME

August 29, 2011Merrimack County, New Hampshire

NWS Gray, ME issued this river flood warning at Aug 29, 2011, 12:32 AM EDT for Merrimack County, New Hampshire. It took effect at Aug 30, 2011, 12:17 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Aug 29, 2011, 12:32 AM EDT (04:32 UTC)
In effect from: Aug 30, 2011, 12:17 AM EDT
Expired: Aug 29, 2011, 2:55 PM EDT
In force
Issued by: NWS Gray, ME
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 04:31 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 Merrimack River at Concord (CONN3).

Action stage: 12 ft
Minor stage: 14 ft
Moderate stage: 17 ft
Major stage: 20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01088400, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this river flood warning went out at Aug 28, 8:12 PM EDT, 4 hours 20 minutes earlier.

Area forecast discussion, Aug 28, 8:12 PM EDT, 4 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
812 PM EDT SUN AUG 28 2011

.SYNOPSIS...
LOW PRESSURE ASSOCIATED WITH THE REMNANTS OF IRENE WILL CONTINUE
TO MOVE NORTH NORTHEAST THROUGH NORTHERN NEW ENGLAND TONIGHT. RAIN
WILL GRADUALLY COME TO AN END BUT GUSTY WINDS WILL CONTINUE
THROUGH THE EVENING. HIGH PRESSURE WILL BUILD IN MONDAY THROUGH
TUESDAY MORNING. A COLD FRONT WILL CROSS THE REGION TUESDAY
AFTERNOON AND EVENING. HIGH PRESSURE WILL RETURN FOR WEDNESDAY
THROUGH FRIDAY WITH LOW PRESSURE FORMING OFF THE MID ATLANTIC
COAST.

&&

.NEAR TERM /OVERNIGHT/...
THE LOW PRESSURE CENTER ASSOCIATED WITH THE REMNANTS OF IRENE WAS
LOCATED NEAR PLYMOUTH NEW HAMPSHIRE THIS EVENING AND MOVING TO THE
NORTH NORTHEAST. MUCH OF THE RAINFALL HAS MOVED NORTH INTO
CANADA...WITH WRAP AROUND RAINFALL MOVING INTO MUCH OF VERMONT.
ALTHOUGH THE RAIN HAS TAPERED OFF ACROSS MUCH OF MAINE AND NEW
HAMPSHIRE...STRONG GUSTY WINDS CONTINUE AROUND THE LOW AS THE
PRESSURE GRADIENT REMAINS STRONG. JUST ABOVE THE SURFACE WIND
SPEEDS ARE MUCH HIGHER...AS AFTERNOON SOUNDING SHOWED 60 TO 70 KT
WINDS JUST ABOVE 1000 FEET. THESE STRONG JETS WILL MOVE OFF TO THE
NORTHEAST AND SLOWLY WEAKEN OVERNIGHT. EXPECT WIND GUSTS TO
DIMINISH GRADUALLY AS NOCTURNAL INVERSION SETS UP AND OFFERS
BETTER PROTECTION FROM THE STRONG WINDS JUST ABOVE THE GROUND.

&&

.SHORT TERM /MONDAY THROUGH MONDAY NIGHT/...
QUIET MONDAY AND MONDAY NIGHT WITH WEAK HIGH PRESSURE MOVING IN.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
HIGH PRESSURE DOMINATES FOR MUCH OF THE PERIOD WITH DRY AND
PLEASANT WEATHER. A COLD FRONT MAY APPROACH ON THE WEEKEND WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS.

&&

.AVIATION /00Z MONDAY THROUGH FRIDAY/...
STRONG WIND GUSTS SHOULD SLOWLY SUBSIDE THIS EVENING. VERY STRONG
LOW LEVEL JETS OF 50 TO 60 KT AT AROUND 1500 FEET CONTINUE TO
CIRCULATE AROUND THE LOW PRESSURE AND WILL KEEP LOW LEVEL WIND
SHEAR IN THE FORECAST THROUGH MUCH OF THE NIGHT. IFR OR LIFR
CONDITIONS WILL TEND TO IMPROVE ONCE WINDS GO AROUND TO THE WEST
BEHIND THE DEPARTING LOW. SHOULD SEE VFR CONDITIONS BY TOMORROW
MORNING EVERYWHERE WITH LIGHTER WINDS AROUND 10 TO 15 KT.

LONG TERM /MONDAY NIGHT THROUGH THURSDAY/...COLD FRONT MAY BRING
SOME SHOWERS AND MVFR CONDITIONS LATER IN THE PERIOD.

&&

.MARINE...
SHORT TERM /TONIGHT THROUGH MONDAY/...SWLY WINDS GUST UP TO AROUND 50
KT UNTIL AFTER MIDNIGHT. SEAS WILL THEN DIMINISH ALONG WITH THE
WINDS. CONTINUED SUBSIDING IS EXPECTED MONDAY AND MONDAY NIGHT.

LONG TERM /MONDAY NIGHT THROUGH THURSDAY/...GENERALLY A QUIET
PERIOD ONCE SEAS SUBSIDE BELOW SCA LEVELS.

&&

.HYDROLOGY...
ALTHOUGH MOST OF THE HEAVY RAIN HAS PASSED...SIGNIFICANT RUNOFF IS
STILL OCCURRING AND WILL CONTINUE TO POSE A FLOODING THREAT THROUGH
THE NIGHT ESPECIALLY IN NORTHERN NEW HAMPSHIRE AND NORTHWEST
MAINE. MONITOR THE LATEST FLOOD WARNINGS FOR STAGES AND FORECASTS
FOR INDIVIDUAL RIVERS.

&&

.TIDES/COASTAL FLOODING...
HIGH TIDE AT PORTLAND IS 10.9 FEET AT 1111 PM TONIGHT. STRONG
SOUTHERLY FLOW HAS CAUSED A STORM SURGE OF 1 TO 1.5 FT TO BUILD
THIS AFTERNOON. THIS COULD CAUSE MINOR FLOODING THIS EVENING
AROUND THE TIME OF HIGH TIDE IN VULNERABLE AREAS ALONG THE COAST.
IN ADDITION TO THE RISING TIDE AND SURGE...WAVES OF 15 FT WILL
CAUSE SPLASH OVER ONTO AREAS NEAR THE COAST.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...TROPICAL STORM WARNING FOR MEZ007>009-012>014-018>028.
     FLOOD WATCH UNTIL 6 AM EDT MONDAY FOR MEZ007>009-012>014-
     018>028.
NH...TROPICAL STORM WARNING FOR NHZ001>010-013-014.
MARINE...TROPICAL STORM WARNING FOR ANZ150>154.
&&

SYNOPSIS...CEMPA
NEAR TERM...KIMBLE
SHORT TERM...EKSTER
LONG TERM...EKSTER
AVIATION...KIMBLE
MARINE...EKSTER
HYDROLOGY...KIMBLE
TIDES/COASTAL FLOODING...KIMBLE

Hazardous weather outlook, Aug 28, 11:54 PM EDT, 38 minutes before

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In the hours before

Local storm report, Aug 28, 6:56 PM EDT, 5 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAY ME
656 PM EDT SUN AUG 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0214 PM     NON-TSTM WND DMG WESTBROOK               43.68N  70.37W
08/28/2011                   CUMBERLAND         ME   AMATEUR RADIO

            WIRES DOWN

0247 PM     FLOOD            OSSIPEE                 43.69N  71.12W
08/28/2011                   CARROLL            NH   EMERGENCY MNGR

            RT 16 FLOODED AT INDIAN MOUND SHOPPING CENTER

0248 PM     FLOOD            NORTH SANDWICH          43.84N  71.39W
08/28/2011                   CARROLL            NH   PUBLIC

            OVER RD 113 113A

0252 PM     NON-TSTM WND DMG FREEDOM                 43.81N  71.04W
08/28/2011                   CARROLL            NH   AMATEUR RADIO

            PEOPLE TRAPPED IN A TRAILER

0341 PM     NON-TSTM WND DMG POLAND                  44.06N  70.39W
08/28/2011                   ANDROSCOGGIN       ME   AMATEUR RADIO

            TREES DOWN

0343 PM     FLASH FLOOD      GLEN                    44.11N  71.17W
08/28/2011                   CARROLL            NH   AMATEUR RADIO

            1 MILE WEST OF RT16 AND RT302 INTERSECTION ON RT 302
            THE WATER FROM THE ELLIS RIVER IS UP AND OVER BRIDGE

0345 PM     NON-TSTM WND DMG MONROE                  44.62N  69.02W
08/28/2011                   WALDO              ME   AMATEUR RADIO

            TREES DOWN ON POWER LINES

0405 PM     NON-TSTM WND GST 2 N TURNER              44.28N  70.26W
08/28/2011  M64 MPH          ANDROSCOGGIN       ME   TRAINED SPOTTER

            WIND GUST TO 64 MPH MEASURED AT 405 PM IN TURNER.

0409 PM     FLASH FLOOD      BATH                    44.17N  71.97W
08/28/2011                   GRAFTON            NH   AMATEUR RADIO

            AMMANOUSOUC OVER BRIDGES AT BATH

0645 PM     NON-TSTM WND DMG 3 WNW VASSALBORO        44.48N  69.73W
08/28/2011                   KENNEBEC           ME   TRAINED SPOTTER

            NUMEROUS TREES DOWN IN SYDNEY

0651 PM     NON-TSTM WND GST 1 SE SOMERSWORTH        43.25N  70.85W
08/28/2011  E60 MPH          STRAFFORD          NH   TRAINED SPOTTER

            NUMEROUS TREES AND PWER LINES DOWN

&&

EVENT NUMBER GYX1100415 GYX1100408 GYX1100409 GYX1100410 GYX1100416
GYX1100411 GYX1100417 GYX1100413 GYX1100412 GYX1100414 GYX1100418

MJC

Local storm report, Aug 28, 8:01 PM EDT, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
801 PM EDT SUN AUG 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0155 PM     FLOOD            5 E HANOVER             43.70N  72.19W
08/28/2011                   GRAFTON            NH   PUBLIC

            PUBLIC REPORTED FLOODING AT MINK BROOK IN ETNA NH

&&

EVENT NUMBER GYX1100419

DS

Local storm report, Aug 28, 8:04 PM EDT, 4 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
804 PM EDT SUN AUG 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 PM     FLOOD            TWIN MOUNTAIN           44.27N  71.54W
08/28/2011                   COOS               NH   PUBLIC

            PUBLIC REPORTED AMMONOOSUC RIVER OVER RTE 302 IN TWIN
            MOUNTAIN

&&

EVENT NUMBER GYX1100420

DS

Local storm report, Aug 28, 8:05 PM EDT, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
805 PM EDT SUN AUG 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0504 PM     FLOOD            WENTWORTH               43.87N  71.91W
08/28/2011                   GRAFTON            NH   PUBLIC

            PUBLIC REPORTED FLOODING ON BAKER RIVER AND SOUTH
            BRANCH OF BAKER RIVER IN WENTWORTH. HOMES UNDERWATER AND
            CAMPERS OVERTURNED

&&

EVENT NUMBER GYX1100421

DS

Local storm report, Aug 28, 9:07 PM EDT, 3 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
907 PM EDT SUN AUG 28 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0740 PM     FLOOD            SHELBURNE               44.40N  71.18W
08/28/2011                   COOS               NH   PUBLIC

            PUBLIC REPORTED ANDROSCOGGIN RIVER OUT OF ITS BANKS IN
            SHELBURNE NH AND STILL RISING.

&&

EVENT NUMBER GYX1100422

DS

Local storm report, Aug 28, 11:00 PM EDT, 1 hour 32 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 9:29 PM EDT	River Flood Warning	GYX	Oxford	25 hr
Aug 28, 10:03 PM EDT	River Flood Warning	GYX	Somerset	31 hr
Aug 28, 10:03 PM EDT	River Flood Warning	GYX	Kennebec	27 hr
Aug 28, 10:03 PM EDT	River Flood Warning	GYX	Kennebec	40 hr
Aug 28, 10:03 PM EDT	River Flood Warning	GYX	Franklin, Somerset	7 hr
Aug 28, 11:38 PM EDT	Gale Warning	GYX		10 hr
Aug 29, 12:31 AM EDT	Areal Flood Warning	GYX	Oxford	8 hr
Aug 29, 9:15 AM EDT	Small Craft Advisory	GYX		9 hr
Aug 29, 10:18 AM EDT	River Flood Warning	GYX	Androscoggin	28 hr
Aug 29, 5:51 PM EDT	Small Craft Advisory for Hazardous Seas	GYX		12 hr
Aug 29, 1:29 AM EDT	River Flood Warning	GYX	Coos	7 hr
Aug 29, 9:00 AM EDT	River Flood Warning	GYX	Belknap, Grafton, Merrimack	10 hr

Nearby

River Flood Warnings in New Hampshire, 2011 Every river flood warning in 2011

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.