Alert archive / Massachusetts / Flash Flood Watches in 2006

Flash Flood Watch 1, NWS Boston/Norton, MA

June 1, 20068 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood watch at Jun 1, 2006, 3:12 PM EDT for 8 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Jun 1, 2006, 5:00 PM EDT. It was in force for 49 hr.

The area

The counties it named.

The facts

Issued
Jun 1, 2006, 3:12 PM EDT (19:12 UTC)
In effect from
Jun 1, 2006, 5:00 PM EDT
Expired
Jun 3, 2006, 6:00 PM EDT
In force
49 hr
Issued by
NWS Boston/Norton, MA
Flood severity
None

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Bristol County, MA, Essex County, MA, Hampden County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 32 km from the middle of the area, began a volume at 19:13 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

Chatham, MA (KCHH), launched 12:00Z, 7.2 hours before the alert went out and 133 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-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2006-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2006-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
988 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
80 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 flash flood watch 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 flash flood watch went out at Jun 1, 12:08 PM EDT, 3 hours 4 minutes earlier.

Area forecast discussion, Jun 1, 12:08 PM EDT, 3 hours 4 minutes before
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Hazardous weather outlook, Jun 1, 4:08 AM EDT, 11 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
408 AM EDT THU JUN 1 2006

CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-020900-
BARNSTABLE MA-BLOCK ISLAND RI-BRISTOL RI-CENTRAL MIDDLESEX MA-
CHESHIRE NH-DUKES MA-EASTERN ESSEX MA-EASTERN FRANKLIN MA-
EASTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-EASTERN HILLSBOROUGH NH-
EASTERN KENT RI-EASTERN NORFOLK MA-EASTERN PLYMOUTH MA-HARTFORD CT-
NANTUCKET MA-NEWPORT RI-NORTHERN BRISTOL MA-NORTHERN WORCESTER MA-
NORTHWEST MIDDLESEX MA-NORTHWEST PROVIDENCE RI-
SOUTHEAST MIDDLESEX MA-SOUTHEAST PROVIDENCE RI-SOUTHERN BRISTOL MA-
SOUTHERN PLYMOUTH MA-SOUTHERN WORCESTER MA-SUFFOLK MA-TOLLAND CT-
WASHINGTON RI-WESTERN AND CENTRAL HILLSBOROUGH NH-WESTERN ESSEX MA-
WESTERN FRANKLIN MA-WESTERN HAMPDEN MA-WESTERN HAMPSHIRE MA-
WESTERN KENT RI-WESTERN NORFOLK MA-WESTERN PLYMOUTH MA-WINDHAM CT-
408 AM EDT THU JUN 1 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF ATLANTIC
COASTAL WATERS...NORTHERN CONNECTICUT...CENTRAL MASSACHUSETTS...
EASTERN MASSACHUSETTS...NORTHEAST MASSACHUSETTS...SOUTHEAST
MASSACHUSETTS...WESTERN MASSACHUSETTS...SOUTHERN NEW HAMPSHIRE...
CENTRAL RHODE ISLAND...NORTHERN RHODE ISLAND AND SOUTHERN RHODE
ISLAND.

.DAY ONE...TODAY AND TONIGHT
A DENSE FOG ADVISORY REMAINS IN EFFECT FOR NANTUCKET THROUGH 9 AM.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON GENERALLY ALONG AND NORTHWEST OF A BOSTON...TO TAUNTON...
TO PROVIDENCE LINE INCLUDING CONNECTICUT.  THE THUNDERSTORMS
WILL BE MOST NUMEROUS ACROSS SOUTHERN NEW HAMPSHIRE AS WELL AS
NORTHERN AND CENTRAL MASSACHUSETTS WHERE THE POTENTIAL EXISTS FOR
TORRENTIAL RAINFALL AND LOCALIZED FLASH FLOODING FROM ANY
THUNDERSTORM. AN ISOLATED LOCATION MAY RECEIVE OVER 3 INCHES OF RAIN
IN JUST A COUPLE OF HOURS.  PLEASE SEE OUR FLOOD STATEMENT FOR MORE
DETAILED INFORMATION.

IN ADDITION...A FEW SEVERE THUNDERSTORMS ARE ALSO POSSIBLE WITH THE
BEST CHANCE FOR THEM ACROSS SOUTHERN NEW HAMPSHIRE AND INTERIOR
MASSACHUSETTS. ISOLATED THUNDERSTORMS WILL BE CAPABLE OF PRODUCING
STRONG DAMAGING STRAIGHT LINE WIND GUSTS IN EXCESS OF 60 MPH. THE
MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE BETWEEN NOON AND 8
PM.  PLEASE SEE OUR SEVERE WEATHER OUTLOOK FOR MORE INFORMATION.

FINALLY...DANGEROUS CLOUD TO GROUND LIGHTNING IS EXPECTED THIS
AFTERNOON AND EVENING WITH THESE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
ADDITIONAL HEAVY RAIN AND EMBEDDED THUNDERSTORMS ARE EXPECTED FRIDAY
INTO SATURDAY MORNING.  TOTAL RAINFALL AMOUNTS BY SATURDAY SHOULD
AVERAGE BETWEEN 1.50 AND 4 INCHES WITH LOCALLY HIGHER AMOUNTS
BETWEEN 5 AND 7 INCHES.  A FLOOD POTENTIAL OUTLOOK CONTINUES FOR THIS
AND FLOOD WATCHES MAY EVENTUALLY BE NEEDED.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS EXPECTED TODAY AFTER 12 PM FOR THE POTENTIAL OF
A FEW SEVERE THUNDERSTORMS AS WELL AS THE POSSIBILITY FOR ISOLATED
AREAS OF FLASH FLOODING.

FRANK

In the hours before

Special weather statement, Jun 1, 11:57 AM EDT, 3 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1157 AM EDT THU JUN 1 2006

CTZ002>004-MAZ002>016-026-NHZ011-012-015-RIZ001>004-012000-
CENTRAL MIDDLESEX MA-CHESHIRE NH-EASTERN ESSEX MA-
EASTERN FRANKLIN MA-EASTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-
EASTERN HILLSBOROUGH NH-EASTERN KENT RI-EASTERN NORFOLK MA-
HARTFORD CT-NORTHERN WORCESTER MA-NORTHWEST MIDDLESEX MA-
NORTHWEST PROVIDENCE RI-SOUTHEAST MIDDLESEX MA-
SOUTHEAST PROVIDENCE RI-SOUTHERN WORCESTER MA-SUFFOLK MA-TOLLAND CT-
WESTERN AND CENTRAL HILLSBOROUGH NH-WESTERN ESSEX MA-
WESTERN FRANKLIN MA-WESTERN HAMPDEN MA-WESTERN HAMPSHIRE MA-
WESTERN KENT RI-WESTERN NORFOLK MA-WINDHAM CT-
1157 AM EDT THU JUN 1 2006

...THUNDERSTORMS THIS AFTERNOON WILL PRODUCE STRONG WIND GUSTS...
STREET FLOODING RAINS AND SMALL HAIL IN PORTIONS OF SOUTHERN NEW
ENGLAND...

THUNDERSTORMS WILL DEVELOP ACROSS PORTIONS OF INTERIOR SOUTHERN NEW
ENGLAND EARLY THIS AFTERNOON REACHING THE EASTERN MASSACHUSETTS COAST
AND THE UPPER PART OF NARRAGANSETT BAY LATE IN THE DAY.

STORMS WERE IN THE PROCESS OF DEVELOPING DURING MIDDAY OVER EASTERN
NEW YORK STATE. THEY WILL DEVELOP IN THE CONNECTICUT RIVER VALLEY
BETWEEN 130 PM AND 330 PM...REACHING THE INTERSTATE 95 CORRIDOR FROM
NEWBURYPORT TO BOSTON AND PROVIDENCE LATE IN THE DAY.

ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...A FEW STORMS MAY
PRODUCE STRONG WIND GUSTS UP TO 50 MPH. THAT MAY BE STRONG ENOUGH TO
DOWN LARGE BRANCHES...OR EVEN BRING DOWN TREES WHICH HAVE BEEN
WEAKENED BY THE RECENT HEAVY RAINFALL IN SOUTHERN NEW ENGLAND.

THUNDERSTORMS WILL ALSO PRODUCE FREQUENT LIGHTNING AND BANDS OF
VERY HEAVY RAIN...POSSIBLY EVEN SMALL HAIL.

THESE STRONGER STORMS ARE MORE LIKELY TO AFFECT NORTHERN CONNECTICUT
AND WESTERN AND CENTRAL MASSACHUSETTS AND SOUTH CENTRAL NEW
HAMPSHIRE.

IF YOU HAVE OUTDOOR PLANS...BE ALERT FOR SIGNS OF THREATENING
WEATHER...AND GET INDOORS IMMEDIATELY IF THUNDERSTORMS APPROACH YOUR
AREA. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

STAY TUNED TO NOAA ALL HAZARDS WEATHER RADIO OR YOUR LOCAL MEDIA FOR
UPDATES TODAY.

DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 9:27 PM EDTDense Fog AdvisoryBOXBarnstable, Dukes, Nantucket12 hr
Jun 1, 5:14 PM EDTSevere Thunderstorm WarningBOXHampden31 min
Jun 1, 5:25 PM EDTSevere Thunderstorm WarningBOXWorcester50 min
Jun 1, 6:11 PM EDTSevere Thunderstorm WarningBOXWorcester34 min
Jun 1, 6:27 PM EDTSevere Thunderstorm WarningBOXNorfolk48 min
Jun 1, 6:37 PM EDTSpecial Marine WarningBOX70 days
Jun 1, 6:57 PM EDTFlash Flood WarningBOXMiddlesex, Norfolk, Suffolk, Worcester93 min
Jun 1, 7:05 PM EDTFlash Flood WarningBOXFranklin, Hampshire115 min
Jun 1, 4:06 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region39 min
Jun 1, 4:15 PM EDTFlash Flood WarningBOXCapitol Planning Region2 hr
Jun 1, 4:42 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region48 min
Jun 1, 5:39 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region36 min

Nearby

Flash Flood Watches in Massachusetts, 2006Flash Flood Watches in Rhode Island, 2006Flash Flood Watches in Connecticut, 2006Every flash flood watch in 2006

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.