Alert archive / Massachusetts / Red Flag Warnings in 2006

Red Flag Warning 8, NWS Boston/Norton, MA

April 20, 20069 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Kent County, Providence County, Washington County, Rhode Island

NWS Boston/Norton, MA issued this red flag warning at Apr 20, 2006, 11:00 AM EDT for 9 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Kent County, Providence County, Washington County, Rhode Island. It was in force for 9 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
Apr 20, 2006, 11:00 AM EDT (15:00 UTC)
Expired
Apr 20, 2006, 8:00 PM EDT
In force
9 hr
Issued by
NWS Boston/Norton, MA

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

The radar

The Boston radar (KBOX), 52 km from the middle of the area, began a volume at 15:00 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

Chatham, MA (KCHH), launched 12:00Z, 3.0 hours before the alert went out and 153 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 2006-04-20Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2006-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.19395878Sfc1 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
1373 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
97 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 
WWUS81 KBOX 201500
RFWBOX

RED FLAG WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1100 AM EDT THU APR 20 2006


CTZ002>004-MAZ002>006-008>014-017-018-026-NHZ011-012-015-
RIZ001>004-006-202300-
/O.NEW.KBOX.FW.W.0008.060420T1500Z-060421T0000Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-WESTERN FRANKLIN MA-
EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-CENTRAL MIDDLESEX MA-
WESTERN ESSEX MA-WESTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-
EASTERN HAMPSHIRE MA-EASTERN HAMPDEN MA-SOUTHERN WORCESTER MA-
WESTERN NORFOLK MA-SOUTHEAST MIDDLESEX MA-NORTHERN BRISTOL MA-
WESTERN PLYMOUTH MA-NORTHERN MIDDLESEX MA-CHESHIRE NH-
EASTERN HILLSBOROUGH NH-WESTERN AND CENTRAL HILLSBOROUGH NH-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-
EASTERN KENT RI-WASHINGTON RI-
1100 AM EDT THU APR 20 2006

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 8 PM EDT THIS EVENING. 

THE RED FLAG WARNING INCLUDES NORTHERN CONNECTICUT...MOST OF RHODE
ISLAND...AND SOUTHWEST NEW HAMPSHIRE. IT ALSO INCLUDES
WESTERN...CENTRAL...AND INTERIOR EASTERN MASSACHUSETTS.

RED FLAG CONDITIONS ARE DEVELOPING IN SOUTHERN NEW ENGLAND. THE
RELATIVE HUMIDITY AWAY FROM THE COAST IS 15 TO 25 PERCENT AND WINDS
ARE STARTING TO GUST OVER 20 MPH. IN ADDITION THE REGION HAS HAD
LITTLE RAIN IN THE PAST TWO WEEKS. SHOULD A FIRE START...CONDITIONS
ARE FAVORABLE FOR RAPID FIRE SPREAD.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

$$

WTB

Nearby

Red Flag Warnings in Massachusetts, 2006Red Flag Warnings in Rhode Island, 2006Red Flag Warnings in Connecticut, 2006Every red flag warning 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.