NOUS41 KWBC 271218
Public Information Statement 17-18
National Weather Service Headquarters Washington DC
1218 PM EDT Thu Apr 27 2017
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
Other NWS Partners and NWS Employees
From: Michelle Hawkins, Chief
Severe, Fire, Public, and Winter Weather
SUBJECT: Change of Heat Advisory thresholds for New England
Effective immediately, five NWS offices (Caribou, ME; Gray, ME;
Burlington, VT; Taunton, MA and Upton, NY), in collaboration
with the Northeast Regional Heat Collaborative, have lowered
Heat Advisory criteria for all of New England for the coming
Studies and research conducted by the collaborative show that
emergency department visits and deaths from heat increase
significantly on days when the heat index reaches 95 degrees
Fahrenheit or higher.
Thus, the old threshold of 100-104 degrees Fahrenheit for two or
more consecutive hours has been lowered to 95-99 degrees
Fahrenheit occurring for two or more consecutive days, or any
duration of heat index 100-104 degrees Fahrenheit.
Excessive Heat Warning criteria (heat index 105 degrees
Fahrenheit or higher for two or more hours) remains unchanged.
It is expected that this change will alert people sooner to
impending heat threats and if acted upon, reduce the number of
emergency department visits.
No communication changes are required to continue to receive
heat advisory/warning products. Only the triggering threshold
for heat advisories has been changed.
If you have questions, please contact:
NWS Eastern Region Headquarters
Bohemia, NY 11716-2618
National NWS Public Information Statements are online at: