Severe Weather/Flash Flood Coordination Message #1 – Saturday 7/28/12 Severe Weather/Flash Flood Potential

Hello to all..

..Slow moving thundestorms across Western New England may bring the threat of flash flooding to portions of that region. An isolated strong to severe thunderstorm may also be possible with strong to damaging winds as the main threat..
..A Flash Flood Watch is in effect for Cheshire County New Hampshire, Franklin, Hampden, Hampshire Counties of Massachusetts and Hartford County Connecticut from Noon today through late tonight..
..SKYWARN Activation with Ops at NWS Taunton are possible this afternoon and tonight for flash flood and isolated strong to severe thunderstorm potential..

Satellite imagery shows clouds with some breaks in the clouds over portions of Western New England and Eastern New York with showers and embedded thunderstorms in West-Central New York per Doppler Radar. With enough sunny breaks, the atmosphere should destabilize and this should allow thunderstorms to develop. Due to weak low level winds, they will be slow moving meaning thunderstorms would have the potential to produce heavy rainfall in a short period of time as the main threat over localized areas. There are some stronger winds higher up in the atmosphere so if a thunderstorm could intensify sufficiently an isolated strong to severe thunderstorm could occur with strong to damaging winds as a secondary threat but the main threat from thunderstorms today is heavy rainfall and flash flooding. A Flash Flood Watch has been posted for Cheshire County New Hampshire, Franklin, Hampden and Hampshire counties of Western Massachusetts and Hartford County of North-Central Connecticut from Noon today through late tonight. The east slopes of the Berkshires could have the greatest risk of flash flooding but all of the Flash Flood Watch area has potential. At this time, eastern portions of the NWS Taunton coverage area should not see any significant thunderstorm activity causing any flash flood issues.

SKYWARN Activation with Ops at NWS Taunton are possible this afternoon and evening. This will be the only complete coordination message on today’s threat. A shortened coordination message will be issued if time allows and Ops at NWS Taunton are initiated. Below is the NWS Taunton Flash Flood Watch Statement, Hazardous Weather Outlook and SPC Day-1 Convective Outlook:

NWS Taunton Flash Flood Watch Statement:
http://kamala.cod.edu/ma/latest.wgus61.KBOX.html

NWS Taunton Hazardous Weather Outlook:
http://kamala.cod.edu/ma/latest.flus41.KBOX.html

SPC Day-1 Convective Outlook:
http://www.spc.noaa.gov/products/outlook/day1otlk.html

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Section Emergency Coordinator
Home Phone #: (508) 994-1875 (After 6 PM)
Home/Data #: (508) 997-4503 (After 6 PM)
Work Phone #: 508-346-2929 (8 AM-5 PM)
Email Address: rmacedo@rcn.com
http://ares.ema.arrl.org
http://beta.wx1box.org

Hello to all..

..Slow moving thundestorms across Western New England may bring the threat of flash flooding to portions of that region. An isolated strong to severe thunderstorm may also be possible with strong to damaging winds as the main threat..
..A Flash Flood Watch is in effect for Cheshire County New Hampshire, Franklin, Hampden, Hampshire Counties of Massachusetts and Hartford County Connecticut from Noon today through late tonight..
..SKYWARN Activation with Ops at NWS Taunton are possible this afternoon and tonight for flash flood and isolated strong to severe thunderstorm potential..

Satellite imagery shows clouds with some breaks in the clouds over portions of Western New England and Eastern New York with showers and embedded thunderstorms in West-Central New York per Doppler Radar. With enough sunny breaks, the atmosphere should destabilize and this should allow thunderstorms to develop. Due to weak low level winds, they will be slow moving meaning thunderstorms would have the potential to produce heavy rainfall in a short period of time as the main threat over localized areas. There are some stronger winds higher up in the atmosphere so if a thunderstorm could intensify sufficiently an isolated strong to severe thunderstorm could occur with strong to damaging winds as a secondary threat but the main threat from thunderstorms today is heavy rainfall and flash flooding. A Flash Flood Watch has been posted for Cheshire County New Hampshire, Franklin, Hampden and Hampshire counties of Western Massachusetts and Hartford County of North-Central Connecticut from Noon today through late tonight. The east slopes of the Berkshires could have the greatest risk of flash flooding but all of the Flash Flood Watch area has potential. At this time, eastern portions of the NWS Taunton coverage area should not see any significant thunderstorm activity causing any flash flood issues.

SKYWARN Activation with Ops at NWS Taunton are possible this afternoon and evening. This will be the only complete coordination message on today’s threat. A shortened coordination message will be issued if time allows and Ops at NWS Taunton are initiated. Below is the NWS Taunton Flash Flood Watch Statement, Hazardous Weather Outlook and SPC Day-1 Convective Outlook:

NWS Taunton Flash Flood Watch Statement:
http://kamala.cod.edu/ma/latest.wgus61.KBOX.html

NWS Taunton Hazardous Weather Outlook:
http://kamala.cod.edu/ma/latest.flus41.KBOX.html

SPC Day-1 Convective Outlook:
http://www.spc.noaa.gov/products/outlook/day1otlk.html

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Section Emergency Coordinator
Home Phone #: (508) 994-1875 (After 6 PM)
Home/Data #: (508) 997-4503 (After 6 PM)
Work Phone #: 508-346-2929 (8 AM-5 PM)
Email Address: rmacedo@rcn.com
http://ares.ema.arrl.org
http://beta.wx1box.org

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