Blistering Heat Wave Across Southern Plains and Lower Mississippi Valley This Weekend; Wet Weather In The East

A scorching Heat Wave will continue across the southern tier of the country. Temperatures and Heat Indices will reach or easily surpass triple digits, as a ridge of high pressure dominates. Widespread Excessive Heat Warnings and Advisories are in effect, will persist and spread into the Southwest/CA next week. Meanwhile, locally heavy rain will be possible for the OH Valley/Mid-Atl/Northeast.
Read More...

Last Update: 627 AM EDT Sat Jul 21 2018

View Nearby Observations

For More Weather Information:

Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Zone Forecast


Synopsis: ANZ100-220030- 627 AM EDT Sat Jul 21 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure over the waters will drift east today. An area of low pressure with an associated warm front will approach from the south tonight and will lift north into the region on Sunday. A southerly warm and humid air mass will prevail behind the front early next week. $$

Today
E winds 5 to 10 kt. Seas around 2 ft. Areas of dense fog this morning, then areas of fog this afternoon. Vsby variable to less than one quarter nm.
Tonight
E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Areas of fog. Showers likely after midnight. Vsby variable to less than one quarter nm.
Sun
SE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft. Areas of fog in the morning. Showers with a chance of tstms in the morning, then showers likely in the afternoon. Vsby variable to less than one quarter nm, increasing to 1 to 3 nm in the afternoon.
Sun Night
S winds 10 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Showers likely with a chance of tstms. Vsby 1 to 3 nm in the evening.
Mon
S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers.
Mon Night
S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Tue
S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers and tstms.
Tue Night
S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Wed
S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Wed Night
SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.
  Click Map For Detailed Forecast

ABOUT THIS FORECAST

Last Update: 627 AM EDT Sat Jul 21 2018
  Forecast Discussion
   

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data