Alert archive / Massachusetts / Red Flag Warnings in 2020
Red Flag Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this red flag warning at Oct 10, 2020, 3:49 AM EDT for 10 counties in Massachusetts; Bristol County, Newport County, Providence County, Rhode Island. It took effect at Oct 10, 2020, 10:00 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
- Oct 10, 2020, 3:49 AM EDT (07:49 UTC)
- In effect from
- Oct 10, 2020, 10:00 AM EDT
- Expired
- Oct 10, 2020, 8:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Boston/Norton, MA
Counties Barnstable County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Middlesex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Newport County, RI, Providence County, RI
The radar
The Boston radar (KBOX), 9 km from the middle of the area, began a volume at 07:48 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 00:00Z, 7.8 hours before the alert went out and 93 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
- 1443 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
256 WWUS81 KBOX 100749 RFWBOX URGENT - FIRE WEATHER MESSAGE National Weather Service Boston/Norton MA 349 AM EDT Sat Oct 10 2020 MAZ004>007-012>024-026-RIZ001-002-005-007-101600- /O.UPG.KBOX.FW.A.0002.201010T1400Z-201011T0000Z/ /O.NEW.KBOX.FW.W.0002.201010T1400Z-201011T0000Z/ Northern Worcester MA-Central Middlesex MA-Western Essex MA- Eastern Essex 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-Bristol RI-Newport RI- 349 AM EDT Sat Oct 10 2020 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT THIS EVENING FOR CENTRAL AND EASTERN MASSACHUSETTS AS WELL AS NORTHERN AND EASTERN RHODE ISLAND... The National Weather Service in Boston/Norton has issued a Red Flag Warning, which is in effect from 10 AM this morning to 8 PM EDT this evening. The Fire Weather Watch is no longer in effect. * TIMING...Late this morning through early evening. * WINDS...Southwest 15 to 20 mph with gusts between 35 and 45 mph. Strongest of those wind gusts will be towards the Cape and Islands. * RELATIVE HUMIDITY...Minimum values will range from 40 to 60 percent during the afternoon. * TEMPERATURES...Generally in 70s during the afternoon. * IMPACTS...Dry weather and gusty 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. && $$
1 follow-up statement
460 WWUS81 KBOX 101411 RFWBOX URGENT - FIRE WEATHER MESSAGE National Weather Service Boston/Norton MA 1011 AM EDT Sat Oct 10 2020 MAZ004>007-012>024-026-RIZ001-002-005-007-102215- /O.CON.KBOX.FW.W.0002.000000T0000Z-201011T0000Z/ Northern Worcester MA-Central Middlesex MA-Western Essex MA- Eastern Essex MA-Southern Worcester MA-Western Norfolk MA- Southeast Middlesex MA-Suffolk MA-Eastern Norfolk MA- Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Northern Middlesex MA-Northwest Providence RI- Southeast Providence RI-Bristol RI-Newport RI- 1011 AM EDT Sat Oct 10 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR CENTRAL AND EASTERN MASSACHUSETTS AS WELL AS NORTHERN AND EASTERN RHODE ISLAND... * TIMING...Late this morning through early evening. * WINDS...Southwest 15 to 25 mph with gusts 35 to 45 mph. Strongest gusts will be across southeast Massachusetts and Cape Cod. * RELATIVE HUMIDITY...As low as 40 to 45 percent in northeast Massachusetts. 50 to 60 percent near the south coast. * TEMPERATURES...Generally in 70s during the afternoon. * IMPACTS...Dry weather and gusty winds will result in critical fire weather conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Any fires that start may spread rapidly and become difficult to extinguish. && $$ 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
Nearby
Red Flag Warnings in Massachusetts, 2020Red Flag Warnings in Rhode Island, 2020Every red flag warning in 2020
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.