Alert archive / Connecticut / Areal Flood Warnings in 2018

Areal Flood Warning 37, NWS Boston/Norton, MA

September 25, 2018Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this areal flood warning at Sep 25, 2018, 7:45 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 25, 2018, 7:45 PM EDT (23:45 UTC)
Expired: Sep 25, 2018, 11:45 PM EDT
In force: 4 hr
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Flood severity: None

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT

The radar

The Boston radar (KBOX), 95 km from the middle of the area, began a volume at 23:48 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

Brookhaven, NY (KOKX), launched 12:00Z, 11.8 hours before the alert went out and 117 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 457 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 413 m²/s²
0-3 km storm-relative helicity: 577 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Boston/Norton, MA wrote its last area forecast discussion before this areal flood warning went out at Sep 25, 5:10 PM EDT, 2 hours 35 minutes earlier.

Area forecast discussion, Sep 25, 5:10 PM EDT, 2 hours 35 minutes before

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Hazardous weather outlook, Sep 25, 3:49 AM EDT, 15 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Boston/Norton MA
349 AM EDT Tue Sep 25 2018

CTZ002>004-MAZ002>024-026-RIZ001>008-260800-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA-
Western Essex MA-Eastern Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Eastern Norfolk MA-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
349 AM EDT Tue Sep 25 2018

This Hazardous Weather Outlook is for northern Connecticut, all of
Massachusetts east of Berkshire County, and Rhode Island.

.DAY ONE...Today and tonight.

Rain heavy at times from late this morning into the afternoon may
result in minor street and highway flooding.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low risk for a few strong or severe thunderstorms
Wednesday morning along the South Coast. Another chance will occur
late Wednesday afternoon and early Wednesday night...mainly across
interior southern New England. Main concern would be strong to
locally damaging wind gusts.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

ANZ230>237-251-254>256-260800-
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
Massachusetts Bay and Ipswich Bay-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard and
Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out to
20 nm South of Block Island-
349 AM EDT Tue Sep 25 2018

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ250-260800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-
349 AM EDT Tue Sep 25 2018

...GALE WARNING IN EFFECT FROM 7 PM THIS EVENING TO MIDNIGHT EDT
TONIGHT...

This Hazardous Weather Outlook is for Massachusetts coastal waters.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low risk for a few strong or severe thunderstorms late
Wednesday afternoon and early Wednesday night. Main concern would be
strong to locally damaging wind gusts.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

For the latest updates, please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

In the hours before

Local storm report, Sep 25, 7:08 PM EDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
708 PM EDT TUE SEP 25 2018

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

0508 PM     HEAVY RAIN       FITCHBURG               42.62N  71.80W
09/25/2018  M1.13 INCH       WORCESTER          MA   CO-OP OBSERVER

0510 PM     HEAVY RAIN       AVON                    41.81N  72.83W
09/25/2018  M2.11 INCH       HARTFORD           CT   TRAINED SPOTTER

0533 PM     HEAVY RAIN       SOUTHINGTON             41.60N  72.88W
09/25/2018  M2.54 INCH       HARTFORD           CT   TRAINED SPOTTER

0557 PM     HEAVY RAIN       NORTH PROVIDENCE        41.86N  71.46W
09/25/2018  M1.23 INCH       PROVIDENCE         RI   GENERAL PUBLIC

0618 PM     HEAVY RAIN       BRISTOL                 41.67N  72.95W
09/25/2018  M2.19 INCH       HARTFORD           CT   HAM RADIO

0624 PM     HEAVY RAIN       NEWINGTON               41.70N  72.72W
09/25/2018  M2.21 INCH       HARTFORD           CT   HAM RADIO

0629 PM     HEAVY RAIN       SOUTH GLASTONBURY       41.67N  72.60W
09/25/2018  M2.33 INCH       HARTFORD           CT   HAM RADIO

0632 PM     HEAVY RAIN       MANCHESTER              41.78N  72.52W
09/25/2018  M2.05 INCH       HARTFORD           CT   HAM RADIO

0634 PM     HEAVY RAIN       NORTH GRANBY            42.00N  72.83W
09/25/2018  M2.36 INCH       HARTFORD           CT   HAM RADIO

0638 PM     HEAVY RAIN       EAST HARTFORD           41.78N  72.61W
09/25/2018  M2.20 INCH       HARTFORD           CT   HAM RADIO

0640 PM     HEAVY RAIN       HEBRON                  41.66N  72.37W
09/25/2018  M2.27 INCH       TOLLAND            CT   HAM RADIO

0642 PM     HEAVY RAIN       EAST LONGMEADOW         42.06N  72.51W
09/25/2018  M2.11 INCH       HAMPDEN            MA   HAM RADIO

0647 PM     HEAVY RAIN       HOLYOKE                 42.20N  72.62W
09/25/2018  M2.08 INCH       HAMPDEN            MA   HAM RADIO

0655 PM     HEAVY RAIN       BURLINGTON              41.77N  72.96W
09/25/2018  M2.04 INCH       HARTFORD           CT   HAM RADIO

&&

EVENT NUMBER BOX1804672
EVENT NUMBER BOX1804673
EVENT NUMBER BOX1804674
EVENT NUMBER BOX1804675
EVENT NUMBER BOX1804676
EVENT NUMBER BOX1804677
EVENT NUMBER BOX1804678
EVENT NUMBER BOX1804679
EVENT NUMBER BOX1804680
EVENT NUMBER BOX1804681
EVENT NUMBER BOX1804682
EVENT NUMBER BOX1804683
EVENT NUMBER BOX1804684
EVENT NUMBER BOX1804685

LEC

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 25, 3:57 AM EDT	Gale Warning	BOX		18 hr
Sep 25, 3:57 AM EDT	Small Craft Advisory	BOX		12 hr
Sep 25, 1:30 PM EDT	Special Weather Statement	BOX	Worcester	45 min
Sep 25, 4:12 PM EDT	Areal Flood Advisory	BOX	Hampden	3 hr
Sep 25, 5:45 PM EDT	Areal Flood Advisory	BOX	Hampden	60 min
Sep 25, 6:44 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	2 hr

Nearby

Areal Flood Warnings in Connecticut, 2018 Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.