❰ Current Conditions

Tropical Storm Warning + 1 More Alert
Tropical Storm Warning
TROPICAL STORM WARNING REMAINS IN EFFECT

Tropical Storm Warning issued August 4 at 5:01AM EDT by NWS Boston/Norton MA

* LOCATIONS AFFECTED - Cambridge

* WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 20-30 mph with gusts to 50 mph

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for hazardous wind of equivalent tropical storm force. - PREPARE: Remaining efforts to protect property should be completed as soon as possible. Prepare for limited wind damage. - ACT: Move to safe shelter before the wind becomes hazardous.

- POTENTIAL IMPACTS: Limited - Damage to porches, awnings, carports, sheds, and unanchored mobile homes. Unsecured lightweight objects blown about. - Many large tree limbs broken off. A few trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Some fences and roadway signs blown over. - A few roads impassable from debris, particularly within urban or heavily wooded places. Hazardous driving conditions on bridges and other elevated roadways. - Scattered power and communications outages.

* FLOODING RAIN - LATEST LOCAL FORECAST: - Peak Rainfall Amounts: No significant rainfall forecast

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Little or no potential for flooding rain - The flooding rain threat has decreased from the previous assessment. - PLAN: There is little or no potential for flooding rain. - PREPARE: Little to no preparations are needed to protect against flooding rain at this time. - ACT: Monitor for changes to the forecast.

- POTENTIAL IMPACTS: Little to None - Little to no potential impacts from flooding rain.

* TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has decreased from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast.

- POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes.

* FOR MORE INFORMATION: - https://www.weather.gov/box
Tropical Cyclone Statement
Tropical Cyclone Statement issued August 4 at 5:12AM EDT by NWS Boston/Norton MA

This product covers Southern New England

** Tropical Storm Isaias To Impact Southern New England Later Today and Early Tonight **

Tuesday...

NEW INFORMATION ---------------

* CHANGES TO WATCHES AND WARNINGS: - None

* CURRENT WATCHES AND WARNINGS: - A Tropical Storm Warning is in effect for northern Connecticut, Massachusetts, and Rhode island.

* STORM INFORMATION: - About 530 miles southwest of Nantucket MA - 36.3N 77.5W - Storm Intensity 70 mph - Movement North-northeast or 20 degrees at 28 mph

SITUATION OVERVIEW ------------------

Tropical Storm Isaias is expected to quickly track through southeast New York and western New England this evening, before heading into northern New England. Most of the storm's impacts will occur during about a 6 hour period from late this afternoon through early tonight.

Strong southerly winds gusting to 40 to 60 mph may be capable of downing some trees and power lines. There is also the possibility of an isolated tornado, especially near the Connecticut River Valley. Rainfall totals of 1 to 3 inches are expected, with the higher totals closer to the Berkshires, where urban or small stream flooding may occur. Rainfall totals will decrease farther east. Much of Rhode Island and eastern Massachusetts should receive less than one inch of rain.

Minor coastal flooding will affect south coastal Rhode Island and Massachusetts during high tide early tonight, resulting in inundation of 1 to 2 feet ground level, primarily affecting more vulnerable shore roads and low lying areas.

Rough surf and an increased risk of dangerous rip currents will affect south coastal beaches today and Wednesday.

POTENTIAL IMPACTS -----------------

* WIND: Protect against dangerous wind having possible significant impacts across southern New England. Potential impacts in this area include: - Several large trees snapped or uprooted. - Scattered power and communications outages.

* FLOODING RAIN: Protect against rainfall flooding having possible significant impacts across parts of western Massachusetts and northern Connecticut. Potential impacts include:

- Small streams, creeks, and ditches may overflow. - Rapid inundation of underpasses, low-lying spots, and poor drainage areas. Some streets and parking lots take on moving water as storm drains and retention ponds overflow. Driving conditions become hazardous.

Elsewhere across Southern New England, little to no impact is anticipated.

* TORNADOES: Protect against a tornado event having possible limited impacts across Southern New England, especially near the Connecticut River Valley. Potential impacts include: - A few places may experience tornado damage, along with power and communications disruptions. - Large tree tops and branches snapped off, shallow-rooted trees knocked over, and minor damage to roofs.

* SURGE: Minor impacts are anticipated across south coastal Rhode Island and Massachusetts, including the Narragansett Bay shoreline, around the time of high tide tonight which occurs between 930 PM and 10 PM. Inundation of 1 to 2 feet above ground level is possible.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...* EVACUATIONS: Listen to local official for recommended preparedness actions, including possible evacuation. If ordered to evacuate, do so immediately.

* OTHER PREPAREDNESS INFORMATION: Now is the time to complete all preparations to protect life and property in accordance with your emergency plan. Ensure you are in a safe location before the onset of strong winds or possible flooding.

Keep cell phones well charged. Cell phone chargers for automobiles can be helpful, but be aware of your risk for deadly carbon monoxide poisoning if your car is left idling in a garage or other poorly ventilated area.

Rapidly rising flood waters are deadly. If you are in a flood-prone area, consider moving to higher ground. Never drive through a flooded roadway. Remember, turn around don't drown!

If a Tornado Warning is issued for your area, be ready to shelter quickly, preferably away from windows and in an interior room not prone to flooding. If driving, scan the roadside for quick shelter options.

Closely monitor weather.gov, NOAA Weather radio or local news outlets for official storm information. Be ready to adapt to possible changes to the forecast. Ensure you have multiple ways to receive weather warnings.

* ADDITIONAL SOURCES OF INFORMATION: - For information on appropriate preparations see ready.gov - For information on creating an emergency plan see getagameplan.org - For additional disaster preparedness information see redcross.org
Fire Weather Discussion

Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
457 PM EDT Mon Aug 3 2020

.DISCUSSION...
Mainly dry through Tuesday morning, Southern New England will have 
potential for 1 to over 4 inches of rain Tuesday afternoon into 
early Wednesday.

OUTLOOK...Wednesday through Friday...

High pressure builds into the region later Wed into Thu bringing 
mainly dry weather.

Southeast Middlesex MA-
Including the cities of Cambridge, Lexington, Newton, Waltham, 
and Woburn
457 PM EDT Mon Aug 3 2020

                      Tonight      Tue          Tue Night    Wed          

Cloud cover           Pcldy        Mcldy        Mcldy        Pcldy        
Precip type           Showers      Tstms        Showers      Showers      
Chance precip (%)     20           50           80           40           
Temp (24h trend)      72 (-3)      84 (-8)      70           88           
RH % (24h trend)      87 (-10)     63 (+27)     93           45           
20ft Wnd AM(mph)                   Lgt/Var                   SW  9 G18    
20ft Wnd PM(mph)      Lgt/Var      SE  7        S 18 G34     SW  9        
Precip amount         0.02         0.32         0.91         0.22         
Precip duration       1            2            8            2            
Precip begin          1 AM         Continuing   Continuing   Continuing   
Precip end            Continuing   Continuing   Continuing   Continuing   
Mixing hgt (ft-AGL)   340          4100         720          6460         
Transport wnd (kts)   S  3         S 10         S 14         SW 19        
Vent rate (kt-ft)     1020         41000        10080        122740       
ADI early             105 Very Good41 Gen Good  40 Fair      105 Very Good
ADI late              2 Very Poor  49 Gen Good  41 Gen Good  91 Good      
Max LVORI early       3            5            4            4            
Max LVORI late        5            3            4            1            
CWR                   10           100          100          100          
LAL                   No Tstms     9-15 Strikes No Tstms     No Tstms     
Haines Index          3            4            3            4            

REMARKS...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. West winds
5 to 10 mph. 
.THURSDAY...Mostly sunny. Highs in the lower 80s. West winds
around 5 mph. 
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 60s. Northwest
winds around 5 mph. 
.FRIDAY...Mostly sunny. Highs in the lower 80s. North winds
around 5 mph, becoming east around 5 mph in the afternoon. 
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. Southeast
winds around 5 mph, becoming west after midnight. 
.SATURDAY...Mostly sunny. Highs in the mid 80s. North winds
around 5 mph, becoming east around 5 mph in the afternoon. 
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 60s. Highs in the upper 80s. Southwest winds around 5 mph. 
.MONDAY...Mostly sunny. Highs in the upper 80s. South winds
around 5 mph.