Alert archive / Massachusetts / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this red flag warning at Mar 15, 2021, 10:48 AM EDT for 13 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Mar 15, 2021, 11:00 AM EDT. It was in force for 10 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
- Mar 15, 2021, 10:48 AM EDT (14:48 UTC)
- In effect from
- Mar 15, 2021, 11:00 AM EDT
- Expired
- Mar 15, 2021, 9:00 PM EDT
- In force
- 10 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 14:50 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, 2.8 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1188 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
179 WWUS81 KBOX 151448 RFWBOX URGENT - FIRE WEATHER MESSAGE National Weather Service Boston/Norton MA 1048 AM EDT Mon Mar 15 2021 MAZ002>024-026-RIZ001>008-160100- /O.NEW.KBOX.FW.W.0003.210315T1500Z-210316T0100Z/ 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- 1048 AM EDT Mon Mar 15 2021 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR MASSACHUSETTS AND RHODE ISLAND... The National Weather Service in Boston/Norton has issued a Red Flag Warning which is in effect until 9 PM EDT this evening. * AFFECTED AREA...All of Massachusetts and Rhode Island, except for those locations that still have snow on the ground. * TIMING...Until 9 PM this evening. * WINDS...Northwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...15 to 25 percent. * TEMPERATURES...in the 20s to around 30. * 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 occurring. Any fires that start may spread rapidly and become difficult to extinguish. && $$ For more information from the National Weather Service visit http://weather.gov/box For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston
2 follow-up statements
502 WWUS81 KBOX 151745 RFWBOX URGENT - FIRE WEATHER MESSAGE National Weather Service Boston/Norton MA 145 PM EDT Mon Mar 15 2021 CTZ002>004-160000- /O.EXB.KBOX.FW.W.0003.000000T0000Z-210316T0000Z/ Hartford CT-Tolland CT-Windham CT- 145 PM EDT Mon Mar 15 2021 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR NORTHERN CONNECTICUT... The National Weather Service in Boston/Norton has issued a Red Flag Warning for northern Connecticut which is in effect until 8 PM EDT this evening. * AFFECTED AREA...Hartford, Tolland, and Windham Counties for locations that do not have snow on the ground. * TIMING...Until 9 PM this evening. * WINDS...Northwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...15 to 20 percent. * TEMPERATURES...In the 20s to near 30. * IMPACTS...Dry weather and strong winds will result in critical fire weather conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are occurring. Any fires that start may spread rapidly and become difficult to extinguish. && $$ MAZ002>024-026-RIZ001>008-160100- /O.CON.KBOX.FW.W.0003.000000T0000Z-210316T0100Z/ 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- 145 PM EDT Mon Mar 15 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR MASSACHUSETTS AND RHODE ISLAND... * AFFECTED AREA...All of Massachusetts and Rhode Island, except for those locations that still have snow on the ground. * TIMING...Until 9 PM this evening. * WINDS...Northwest 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...15 to 25 percent. * TEMPERATURES...in the 20s to around 30. * 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 occurring. Any fires that start may spread rapidly and become difficult to extinguish. && && $$ For more information from the National Weather Service visit http://weather.gov/box For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston
078 WWUS81 KBOX 152352 RFWBOX URGENT - FIRE WEATHER MESSAGE National Weather Service Boston/Norton MA 752 PM EDT Mon Mar 15 2021 CTZ002>004-160100- /O.EXP.KBOX.FW.W.0003.000000T0000Z-210316T0000Z/ Hartford CT-Tolland CT-Windham CT- 752 PM EDT Mon Mar 15 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR NORTHERN CONNECTICUT... $$ MAZ002>024-026-RIZ001>008-160100- /O.CON.KBOX.FW.W.0003.000000T0000Z-210316T0100Z/ 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 Mon Mar 15 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR MASSACHUSETTS AND RHODE ISLAND... * AFFECTED AREA...All of Massachusetts and Rhode Island, except for those locations that still have snow on the ground. * TIMING...Until 9 PM this evening. * WINDS...Northwest 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 21 percent. * TEMPERATURES...Around 20. * 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 occurring. 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
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 9:51 AM EDT | Small Craft Advisory | BOX | 26 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.