National Weather Service

Spring Break is right around the corner! Are you planning a beach trip? Tides, winds, and waves can lead to dangerous conditions and impact your plans at the beach. Find your surf forecast: weather.gov/safety/ripcurr…

What does a #HeatDome look like on satellite? This water vapor imagery from @NOAA's #GOESWest (#GOES18) 🛰️ shows you! Learn more about the historic March heatwave baking the western U.S. in our #SatelliteSnapshot: bit.ly/4rCpraF

Gusty winds and low humidity values once again Friday and Saturday afternoons that will lead to critical fire weather concerns and red flag conditions. Burning of any kind is highly discouraged! #WyWx

The early season western #heatwave is well under way. Here are monthly high temperature records for March set over the past two days. Future daily temperature records can be found here: wpc.ncep.noaa.gov/exper/ndfd/ndf…

SWPC update 16 Mar 1022am EDT. Where is the first of the CMEs? This video update explains more about CMEs, hints of CME movement through space, uncertainty, & about the expected CH HSS as well. All this as part of our 19-21 Mar G2 forecast. Stay aware at spaceweather.gov

#SafePlaceSelfie Day this year will be Wednesday, April 8. Do you know your safe place to ride out extreme weather? On April 8, show us your safe place! Take a picture from your safe place and share it it with #SafePlaceSelfie to inspire others. To learn more visit noaa.gov/safeplaceselfie.

As of 2:57 pm MST Phoenix Sky Harbor Airport has reached 100°. This is not only the first 100° day of 2026, but it is also the earliest occurrence of 100° in Phoenix (which last occurred on March 26, 1988). #azwx

3/18/26 🛰️🔁 @NOAASatellites Not for nothing, but man, that is one impressively strong ridge over the Desert SW & Southern Rockies. If that thing was over us, we'd bake! 😮‍💨 Y'all ok? @NWSSanDiego @NWSVegas @NWSPhoenix @NWSTucson @NWSBayArea @NWSLosAngeles @NWSFlagstaff

G2 Watch is out 19-21 March due to a mix of potential CME arrivals and CH HSS effects. While there is a high level of uncertainty related to the CME arrivals, there is more certainty regarding the likely CH HSS effects to begin 21 March. Stay informed at spaceweather.gov

An extreme early-season heat wave could see temperatures 20-30 degrees above average and record temperatures broken by 10 or more degrees today and tomorrow across the Desert Southwest. Jumping right into summer-like heat puts vulnerable populations at risk. Stay cool and check out weather.gov/safety/heat

Reminder ahead of your spring break: Swimming in a pool is NOT the same as swimming at a surf beach with crashing waves, winds and currents. You should be a strong swimmer before you go into the ocean. Learning how to swim is the best defense against drowning. weather.gov/safety/beach

Be ready for today's heat continuing through the rest of the work week - with little day-to-day changes especially inland of the beaches. Some relief is expected into early next week. #cawx

Ohio Severe Weather Week Continues: Debunking the myths about tornadoes.

This week’s heat from the West Coast to the Plains will set hundreds of daily records—many by several degrees. Some areas may even set March records, with temperatures more typical of June. Learn how to stay safe: weather.gov/heat

Never, never, never leave children, disabled or elderly adults, or pets in parked, unattended vehicles! Studies have shown that the temperature inside a parked vehicle can rapidly rise to dangerous levels for people and pets. Leaving the windows slightly open does not significantly decrease the heating rate. The effects can be more severe on children because their bodies have not developed the ability to efficiently regulate internal temperature. weather.gov/safety/heat-ch…

With a BIG warmup for much of the U.S. this week, it's important to remember that warm days don’t always mean warm water, especially in the spring. Take precautions when going out on the water. weather.gov/safety/coldwat…

This week will be exceptionally hot for March, meaning we will likely break daily records, and even some all time records for March. Here's a list of the current records for reference. Preliminary New records for Today: Burbank: 91, Woodland Hills: 97

Extreme heat is in the forecast this week. Don’t wait until heat arrives to begin protecting yourself. Begin preparing NOW. weather.gov/safety/heat

To quote the @NWSPhoenix forecast discussion: "If this watch were to be upgraded to a Extreme Heat Warning, which almost certain at this point, it would become the earliest heat warning to go into effect, with the current earliest instance occurring between April 26th and 30th of 2020." Spoiler: This watch is now a warning.

It is going to get hot this week. 🥵 ☀️ Temperatures will soar 20 to 30°F above normal making it feel more like early June than mid-March for many. Dozens of daily high temperatures records are forecast to be broken or tied this week. 🔥Extreme heat warnings and heat advisories are already in place for many across California, Nevada and Arizona. The heat will spread east and south as the week progresses. For heat safety tips visit: weather.gov/safety/heat