Alert archive / Massachusetts / Red Flag Warnings in 2021

Red Flag Warning 2, NWS Boston/Norton, MA

March 14, 20215 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 13 counties in Massachusetts

NWS Boston/Norton, MA issued this red flag warning at Mar 14, 2021, 3:10 AM EDT for 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 13 counties in Massachusetts. It took effect at Mar 14, 2021, 8:00 AM EDT. It was in force for 12 hr. 11 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 14, 2021, 3:10 AM EDT (07:10 UTC)
In effect from
Mar 14, 2021, 8:00 AM EDT
Expired
Mar 14, 2021, 8:00 PM EDT
In force
12 hr
Issued by
NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Barnstable County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Nantucket 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), 26 km from the middle of the area, began a volume at 07:10 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.

What was reported inside it

TimeReportWhereRemark
Mar 14, 1:00 PM EDTNON-TSTM WND DMGWebster, MALARGE TREE DOWN ON LAKE PARKWAY
Mar 14, 2:52 PM EDTNON-TSTM WND DMGMonson, MATREE DOWN ON SILVER ST
Mar 14, 2:56 PM EDTNON-TSTM WND DMGWayland, MALARGE TREE DOWN ON WIRES ON LAKE SHORE DRIVE
Mar 14, 3:02 PM EDTNON-TSTM WND DMGHopkinton, MATREE AND POWER LINES DOWN ON HILL ST
Mar 14, 3:20 PM EDTNON-TSTM WND DMGNewton, MALARGE TREE DOWN ACROSS I-90 EASTBOUND
Mar 14, 3:28 PM EDTNON-TSTM WND DMGAshland, MATREE DOWN BLOCKING MYRTLE ST
Mar 14, 4:47 PM EDTNON-TSTM WND DMGShelburne, MATREE DOWN ON WIRES ON NORTH STREET
Mar 14, 5:11 PM EDTNON-TSTM WND DMGCanton, MATREE AND WIRES DOWN ON HIGHLAND ST
Mar 14, 5:28 PM EDTNON-TSTM WND DMGNew Salem, MATREE DOWN ON WIRES ON OSBOURNE RD
Mar 14, 5:35 PM EDTNON-TSTM WND DMGSalem, MATREE DOWN ON CAR ON WINTHROP ST
Mar 14, 6:00 PM EDTNON-TSTM WND DMGWellesley, MATREE DOWN BLOCKING STATE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 7.2 hours before the alert went out and 127 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 00:00Z on 2021-03-14Temperature 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 00:00Z on 2021-03-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.1939587897117Sfc1 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
2108 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

815 
WWUS81 KBOX 140710
RFWBOX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Boston/Norton MA
310 AM EDT Sun Mar 14 2021

CTZ002>004-MAZ002>024-026-RIZ001>008-142015-
/O.NEW.KBOX.FW.W.0002.210314T1200Z-210315T0000Z/
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-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-
Bristol RI-Washington RI-Newport RI-Block Island RI-
310 AM EDT Sun Mar 14 2021

...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT
THIS EVENING FOR STRONG NORTHWEST WINDS AND VERY LOW RELATIVE
HUMIDITY ACROSS SOUTHERN NEW ENGLAND...

* AFFECTED AREA...All of Southern New England except for areas
  that still are snow covered.

* TIMING...8 AM this morning to 8 PM this evening.

* WINDS...Northwest 15 to 25 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...Dropping to between 30 and 40 percent.

* TEMPERATURES...In the upper 30s and 40s.

* IMPACTS...Dry weather and strong winds will result in critical
  fire weather conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, .or will shortly. Any fires that start
may spread rapidly and become difficult to extinguish.

&&

$$

Frank

For more information from the National Weather Service visit
http://weather.gov/box
For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston
2 follow-up statements
597 
WWUS81 KBOX 142015
RFWBOX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Boston/Norton MA
415 PM EDT Sun Mar 14 2021

CTZ002>004-MAZ002>024-026-RIZ001>008-150000-
/O.CON.KBOX.FW.W.0002.000000T0000Z-210315T0000Z/
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-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-
Bristol RI-Washington RI-Newport RI-Block Island RI-
415 PM EDT Sun Mar 14 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR STRONG NORTHWEST WINDS AND VERY LOW RELATIVE HUMIDITY ACROSS
SOUTHERN NEW ENGLAND...

* AFFECTED AREA...All of Southern New England, except for areas
  that still are snow covered.

* TIMING...Until 8 PM this evening.

* WINDS...Northwest 15 to 25 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...As low as 29 percent.

* TEMPERATURES...In the mid 30s.

* IMPACTS...Dry weather and strong winds will result in critical 
  fire weather conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, .or will shortly. Any fires that start
may spread rapidly and become difficult to extinguish.

&&

$$


For more information from the National Weather Service visit
http://weather.gov/box
For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston
710 
WWUS81 KBOX 142352
RFWBOX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Boston/Norton MA
752 PM EDT Sun Mar 14 2021

CTZ002>004-MAZ002>024-026-RIZ001>008-150100-
/O.EXP.KBOX.FW.W.0002.000000T0000Z-210315T0000Z/
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-Northern Bristol MA-
Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-
Bristol RI-Washington RI-Newport RI-Block Island RI-
752 PM EDT Sun Mar 14 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT ACROSS SOUTHERN NEW
ENGLAND...

The Red Flag Warning will be allowed to expire as relative
humidities recover overnight, but gusty winds will persist.
However, elevated fire weather conditions are likely to exist
tomorrow. Stay tuned to later forecasts and discussions.

$$

BL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 14, 2:46 PM EDTSpecial Weather StatementBOXProvidence59 min
Mar 14, 3:53 PM EDTSpecial Weather StatementBOXKent, Providence67 min
Mar 14, 3:14 AM EDTHeavy Freezing Spray AdvisoryBOX31 hr
Mar 14, 2:56 PM EDTSpecial Weather StatementBOXEssex, Middlesex49 min
Mar 14, 3:30 PM EDTSpecial Weather StatementBOXWorcester60 min
Mar 14, 4:19 PM EDTSpecial Weather StatementBOXMiddlesex, Norfolk, Worcester56 min
Mar 14, 5:22 PM EDTSpecial Weather StatementBOXNorfolk, Plymouth53 min

Nearby

Red Flag Warnings in Massachusetts, 2021Red Flag Warnings in Rhode Island, 2021Red Flag Warnings in Connecticut, 2021Every red flag warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.