Alert archive / Massachusetts / Flash Flood Warnings in 2005

Flash Flood Warning 5, NWS Boston/Norton, MA

July 18, 2005Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Jul 18, 2005, 4:00 PM EDT for Hampshire County, Massachusetts. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 18, 2005, 4:00 PM EDT (20:00 UTC)
Expired
Jul 18, 2005, 7:00 PM EDT
In force
3 hr
Issued by
NWS Boston/Norton, MA
Area
Counties, with a storm outline in the text

County Hampshire County, MA

The radar

The Albany radar (KENX), 112 km from the middle of the area, began a volume at 20:00 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

Albany, NY (KALY), launched 12:00Z, 8.0 hours before the alert went out and 96 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, Albany, NY at 12:00Z on 2005-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 901 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2005-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
901 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KBOX 182003
FFWBOX
MAC015-182300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
400 PM EDT MON JUL 18 2005

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS

* UNTIL 700 PM EDT

* AT 400 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  TORRENTIAL RAINFALL FROM SLOW MOVING THUNDERSTORMS NEAR
  CHESTERFIELD AND WILLIAMSBURG.

* THESE THUNDERSTORMS ARE EXPECTED TO REDEVELOP AND MOVE SLOWLY...
  BRINGING ADDITIONAL RAINFALL OF UP TO 3 INCHES TO CENTRAL
  HAMPSHIRE COUNTY THROUGH 700 PM EDT. THIS INCLUDES BUT IS NOT
  LIMITED TO THE EAST BRANCH OF THE MILL RIVER AND UNQUOMONK BROOK.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.

PEOPLE THAT MAY BE CAMPING OR HIKING IN THE WARNING AREA MUST HEAD
FOR A STURDY SHELTER NOW. BE SURE TO STAY AWAY FROM STREAMS AND LOW
WATER AREAS.

DO NOT DRIVE THROUGH FLOODED ROADWAYS.

STAY TUNED TO NOAA ALL HAZARDS RADIO OR YOUR LOCAL MEDIA FOR UPDATED 
INFORMATION.

LAT...LON 4239 7280 4233 7270 4241 7261 4245 7272

$$

DELLICARPINI
2 follow-up statements
000 
WGUS71 KBOX 182107
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
505 PM EDT MON JUL 18 2005

MAC015-182300-
HAMPSHIRE MA-
505 PM EDT MON JUL 18 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 700 PM EDT FOR CENTRAL
HAMPSHIRE COUNTY...

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHESTERFIELD 
AND WILLIAMSBURG.

SMALLER RIVERS AND STREAMS IN THE WARNING INCLUDE BUT ARE NOT 
LIMITED TO MEEKIN BROOK...UNQUOMONK BROOK...JOE WRIGHT BROOK...THE 
EAST BRANCH OF THE MILL RIVER...GRASS HILL BROOK AND BEAVER BROOK.

AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
THUNDERSTORMS WHICH PRODUCED TORRENTIAL RAINFALL IN CENTRAL 
HAMPSHIRE COUNTY HAVE PUSHED NORTH INTO SOUTHERN FRANKLIN COUNTY. 

HOWEVER...MORE THUNDERSTORMS WERE FORMING IN WESTERN HAMPSHIRE 
COUNTY AND ARE EXPECTED TO MOVE SLOWLY INTO THE CHESTERFIELD AND 
WILLIAMSBURG AREAS BY 630 PM EDT.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS.

NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO 
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. CAMPERS AND HIKERS 
SHOULD AVOID STREAMS OR CREEKS.

STAY TUNED TO NOAA ALL HAZARDS RADIO OR YOUR LOCAL MEDIA FOR UPDATED 
INFORMATION.

$$

DELLICARPINI
000 
WGUS71 KBOX 182200
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
600 PM EDT MON JUL 18 2005

MAC015-182208-
HAMPSHIRE MA-
600 PM EDT MON JUL 18 2005

...THE FLASH FLOOD WARNING FOR CENTRAL HAMPSHIRE COUNTY IS
CANCELLED...

THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL HAVE WEAKENED AND LIFTED 
NORTH INTO FRANKLIN COUNTY.

ALTHOUGH THE DANGER OF FLASH FLOODING HAS ENDED...REMEMBER TO AVOID 
FLOODED ROADWAYS AND STAY AWAY FROM SMALLER RIVERS AND STREAMS...
WHICH MAY BE RUNNING HIGH.

$$

DELLICARPINI

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 2:05 PM EDTFlash Flood WarningBOXFranklin3 hr

Nearby

Flash Flood Warnings in Massachusetts, 2005Every flash flood warning in 2005

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.