Alert archive / Massachusetts / Areal Flood Warnings in 2017

Areal Flood Warning 6, NWS Boston/Norton, MA

July 7, 2017Barnstable County, Massachusetts

NWS Boston/Norton, MA issued this areal flood warning at Jul 7, 2017, 3:14 PM EDT for Barnstable County, Massachusetts. It was in force for 2 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: Jul 7, 2017, 3:14 PM EDT (19:14 UTC)
Expired: Jul 7, 2017, 5:15 PM EDT
In force: 2 hr
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Flood severity: None

County Barnstable County, MA

The radar

The Boston radar (KBOX), 78 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 235 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: 163 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 11 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 Jul 7, 2:59 PM EDT, 15 minutes earlier.

Area forecast discussion, Jul 7, 2:59 PM EDT, 15 minutes before

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Hazardous weather outlook, Jul 7, 4:24 AM EDT, 10 hours 50 minutes before

Hazardous Weather Outlook
National Weather Service Taunton MA
424 AM EDT Fri Jul 7 2017

CTZ002>004-MAZ002>016-023-024-026-RIZ008-080830-
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-Dukes MA-Nantucket MA-
Northern Middlesex MA-Block Island RI-
424 AM EDT Fri Jul 7 2017

This Hazardous Weather Outlook is for northern Connecticut, central
Massachusetts, eastern Massachusetts, northeastern Massachusetts,
southeastern Massachusetts, western Massachusetts and southern
Rhode Island.

.DAY ONE...Today and Tonight.

There is potential for heavy rain and isolated thunderstorms south
of the Mass Turnpike this morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is potential on Saturday for thunderstorms with strong or
damaging wind and heavy downpours.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MAZ017>022-RIZ001>007-080830-
Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA-
Southern Bristol MA-Southern Plymouth MA-Barnstable MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
424 AM EDT Fri Jul 7 2017

...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH
THIS AFTERNOON...

This Hazardous Weather Outlook is for southeastern Massachusetts, and
all of Rhode Island except for Block Island.

.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.

   Flash Flood Watch.

There is the low risk for an isolated strong or damaging
thunderstorm with gusty winds near the south coast today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is potential on Saturday for thunderstorms with strong or
damaging wind and heavy downpours.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ230>237-250-251-254>256-080830-
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-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-
424 AM EDT Fri Jul 7 2017

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

.DAY ONE...Today and Tonight.

A few strong thunderstorms with gusty winds are possible this
morning across the southern coastal waters.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

A few strong thunderstorms with gusty winds are also possible
Saturday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

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, Jul 7, 1:29 PM EDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
129 PM EDT FRI JUL 07 2017

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

0126 PM     FLOOD            CHILMARK                41.35N  70.75W
07/07/2017                   DUKES              MA   AMATEUR RADIO

            SIGNIFICANT STREET FLOODING ON STATE ROAD BETWEEN
            CATHERINES ROAD WAY AND MILLBROOK ROAD

&&

WS

Local storm report, Jul 7, 1:50 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
150 PM EDT FRI JUL 07 2017

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

0148 PM     FLOOD            FALMOUTH                41.55N  70.61W
07/07/2017                   BARNSTABLE         MA   AMATEUR RADIO

            MAIN STREET RTE 28 CLOSED DUE TO SIGNIICANT STREET
            FLOODING

&&

WS

Local storm report, Jul 7, 1:54 PM EDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
154 PM EDT FRI JUL 07 2017

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

0126 PM     FLOOD            CHILMARK                41.35N  70.75W
07/07/2017                   DUKES              MA   AMATEUR RADIO

            SIGNIFICANT STREET FLOODING ON STATE ROAD BETWEEN
            CATHERINES ROAD WAY AND MILLBROOK ROAD

0131 PM     FLOOD            FALMOUTH                41.55N  70.61W
07/07/2017                   BARNSTABLE         MA   AMATEUR RADIO

            CARS STUCK IN FLOOD WATERS ON MAIN STREET AND DAVIS
            STREET

0148 PM     FLOOD            FALMOUTH                41.55N  70.61W
07/07/2017                   BARNSTABLE         MA   AMATEUR RADIO

            MAIN STREET RTE 28 CLOSED DUE TO SIGNIICANT STREET
            FLOODING

&&

WS

Special weather statement, Jul 7, 2:43 PM EDT, 31 minutes before

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Local storm report, Jul 7, 3:03 PM EDT, 11 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 12:05 PM EDT	Special Marine Warning	BOX		25 min
Jul 7, 12:29 PM EDT	Special Marine Warning	BOX		31 min
Jul 7, 12:37 PM EDT	Areal Flood Advisory	BOX	Barnstable, Bristol, Dukes, Plymouth	113 min
Jul 7, 1:17 PM EDT	Areal Flood Warning	BOX	Barnstable	118 min
Jul 7, 1:37 PM EDT	Flash Flood Warning	BOX	Barnstable	3 hr
Jul 7, 2:16 PM EDT	Areal Flood Advisory	BOX	Barnstable	119 min
Jul 7, 2:25 PM EDT	Flash Flood Warning	BOX	Barnstable	2 hr
Jul 7, 2:43 PM EDT	Special Weather Statement	BOX	Barnstable	47 min
Jul 7, 3:42 PM EDT	Special Marine Warning	BOX		63 min
Jul 7, 3:46 PM EDT	Special Marine Warning	BOX		59 min
Jul 7, 4:25 PM EDT	Areal Flood Advisory	BOX	Barnstable	110 min
Jul 7, 2:31 PM EDT	Areal Flood Advisory	BOX	Kent, Providence	119 min

Nearby

Areal Flood Warnings in Massachusetts, 2017 Every areal flood warning in 2017

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.