[Weather] [2024.07.13 PM] NWS Boston EM Briefing Dangerous Heat & Humidity Monday through Wednesday

[BOX Operations - NOAA Service Account]

Good afternoon all,

With the threat for localized flooding over and rain moving off the coast,
our attention turns to the dangerous heat and humidity that will build into
the region Monday. This heat is expected to peak on Tuesday, and may
persist through Wednesday; though, we expect a cold front to swing through
the region late Wednesday/Thursday which, depending on timing, could impact
heat index values on Wednesday afternoon.

On Monday, heat index values are expected to climb to between 95-100F
across the region; excluding the immediate coastline and the high terrain
of western and central Massachusetts. We have issued a Heat Advisory for
much of the interior from 8 AM to 8 PM Monday.

On Tuesday, heat index values have the potential to exceed 105F,
particularly across the CT and Merrimack River Valleys and across
MetroWest. Given this potential, we have issued an Excessive Heat Watch
from 8AM to 8PM Tuesday, which does NOT include the Cape and Islands. This
watch will be converted to either a heat advisory or excessive heat warning
in future updates depending on forecast trends.

On Wednesday, there is a high likelihood that heat index values will again
exceed 95-100F if the cold front is delayed until the evening hours, thus,
there will likely be heat headlines issued by later shifts to encompass
Wednesday. Confidence in heat index values of 105F or greater on Wednesday
was not high enough at this time to extend the Excessive Heat Watch.

Kind regards,

Matt Belk and Kristie Smith

If you have any questions or would like more information, please don't
hesitate to contact us. You can reach us via:
email: box.operations at noaa.gov
phone: 508.622.3280
Slack/NWSChat 2.0 <https://nwschatws.slack.com/> (for approved partners)
social media: Website <http://www.weather.gov/boston> | Facebook
<http://www.facebook.com/NWSBoston> | Twitter
<http://www.twitter.com/NWSBoston>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.massupt.org/pipermail/weather/attachments/20240713/2df7c70f/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: heat_index_tuesday.png
Type: image/png
Size: 767515 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20240713/2df7c70f/attachment-0004.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: excessive_heat_watch.png
Type: image/png
Size: 881990 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20240713/2df7c70f/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: heat_index_monday.png
Type: image/png
Size: 769976 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20240713/2df7c70f/attachment-0006.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: heat_advisory.png
Type: image/png
Size: 758813 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20240713/2df7c70f/attachment-0007.png>