Alert archive / Massachusetts / Flash Flood Warnings in 2005

Flash Flood Warning 18, NWS Boston/Norton, MA

October 19, 2005Bristol County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Oct 19, 2005, 10:25 AM EDT for Bristol County, Massachusetts. It was in force for 6 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
Oct 19, 2005, 10:25 AM EDT (14:25 UTC)
Expired
Oct 19, 2005, 4:00 PM EDT
In force
6 hr
Issued by
NWS Boston/Norton, MA
Area
Counties, with a storm outline in the text

County Bristol County, MA

The radar

The Boston radar (KBOX), 12 km from the middle of the area, began a volume at 14:40 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, 2.4 hours before the alert went out and 91 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 2005-10-19Temperature 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 2005-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939587897Sfc1 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
1166 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
173 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 191426
FFWBOX
MAC005-192000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1025 AM EDT WED OCT 19 2005

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS CONTINUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...SPECIFICALLY 
  THE CITY OF TAUNTON.

* UNTIL 400 PM EDT

* AS OF 1000 AM EDT...LOCAL OFFICIALS CONTINUE TO TELL US THAT THE   
  WHITTENTON POND DAM ON THE MILL RIVER MAY FAIL AT ANYTIME IN THE 
  NEXT 24 HOURS.  THE CONDITIONS REMAIN UNCHANGED OVER THE PAST 
  SEVERAL HOURS.  THE  MAYOR OF TAUNTON HAS ISSUED A STATE OF 
  EMERGENCY AND EVACUATION ORDERS...WHICH HAVE OCCURRED...REMAIN IN 
  PLACE AS OF THIS EVENING.

THE WHITTENTON POND DAM IS 12 FEET HIGH. IF IT WERE TO FAIL...AN 
APPROXIMATELY 8 FOOT FLOOD WAVE WOULD OCCUR WITH A 4 TO 6 FOOT FLOOD 
WAVE INTO PARTS OF TAUNTON THAT ARE DOWNSTREAM...INCLUDING PARTS OF 
THE DOWNTOWN AREA.

THIS IS A VOLATILE AND LIFE THREATENING SITUATION. IF YOU ARE IN AN
AREA WHERE AN EVACUATION HAS BEEN ORDERED...LEAVE IMMEDIATELY

LAT...LON 4190 7102 4188 7100 4187 7103 4189 7104

$$

WTB/NMB

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 9:16 PM EDTFlash Flood WarningBOXBristol13 hr
Oct 19, 2:55 PM EDTFlash Flood WarningBOXBristol6 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.