Three things to know about weather for travelers Tuesday 25 July

Slight risk of flash flooding along the I-95 corridor from New York to Washington this afternoon.
Enhanced risk for severe thunderstorms and tornadoes over the southern Great Lakes region Wednesday.
Above average heat continues across the Southwest, through portions of the Plains and over South Florida.

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Starting Monday morning, 27 November, this site will be down for a major upgrade. RVWeather.com will return no later than Wednesday 29 November — sooner if possible. When the site returns, WILMA, our NEW(!) integrated weather impacts product, will be available. The Paywall will also be implemented. RV Weather will continue to provide free access to essential, RV-relevant National Weather Service Warnings and Advisories, current weather, and weather safety information. While the main site is off-line, I will post a simple forecast to my email list and to RVWeather on Facebook.

From the RV Weather Summer Office in Colter Bay Wyoming:

These are the most significant weather impacts to RV travel over the next two to three days. I do not list every area of rain, showers, or breezy winds. (It would be exhausting for both of us!). Please check out the animations and graphics for a good depiction of the weather along your route.

Pacific:

— Southwest CA valleys and mountains, just inland from the coast: Heat Advisories today and Wednesday. High temperatures up to 105 deg F.

— Southeast CA Deserts; Colorado River Valley north into southern NV: Excessive Heat Warning through Thursday. High temperatures 109-119 deg F. I-8, I-10, I-40 impacted.

— West-central NV: Strong winds Wednesday afternoon. Gusts 30-35 mph. I-80 impacted.

Mountain:

— Southwest ID: Red Flag (fire danger) Warnings this afternoon. Wind gusts to 30 mph.

— South-central and southeast ID: Wind Advisories and Red Flag (fire danger) Warnings this afternoon and evening. Gusts 40-50 mph. I-15, I-84 impacted.

— Northwest and north-central MT including Glacier National Park and the Rocky Mountain Front: Red Flag (fire danger) Warnings this afternoon and evening. Wind gusts this afternoon to 45 mph. I-15 impacted.

— Eastern MT: Heat Advisories today. High temperatures 96-102 deg F. I-90, I-94 impacted.

— Much of eastern MT; north-central, central and southwest WY; north-central and northwest UT: Isolated severe thunderstorms possible today. Strong winds are the primary hazard. I-15, I-80, I-90, I-94 potentially impacted.

— Southeast WY; northeast and east-central CO: Isolated severe thunderstorms possible Wednesday. Winds and hail are the primary hazards. I-25, I-70, I-76, I-80 potentially impacted.

— Northeast and east-central CO: Isolated severe thunderstorms possible Thursday. I-70, I-76 potentially impacted.

— Northwest WY: Strong winds this afternoon. Gusts 30-35 mph. US-89 impacted.

— Northeast, north-central, central and southwest MT; southeast ID; northwest and north-central WY: Strong winds Wednesday afternoon. Gusts 30-40 mph. Strongest winds over northwest WY. I-15, I-90 impacted.

— Southeast and south-central CO; parts of NM: Heat Advisories through Thursday. High temperatures will reach 100-108 deg F. I-10, I-25, I-40 impacted.

— Much of southern AZ: Excessive Heat Warnings through Thursday. High temperatures 111-118 deg F. I-8, I-10, I-17, I-19 impacted.

— AZ Grand Canyon below 4000 feet: Excessive Heat Warning through Sunday. Temperatures may reach 114 deg F at Phantom Ranch.

Central:

— Southeast ND; central and eastern SD and adjacent western MN; north-central and northeast NE; northwest IA: Scattered severe thunderstorms possible today. Damaging wind gusts and hail are the primary hazards. I-29, I-80, I-90, I-94 potentially impacted.

— Eastern and central ND; central SD; western and central NE; northwest KS: Isolated severe thunderstorms possible Wednesday. Wind and hail are the primary hazards. I-29, I-70, I-80, I-90, I-94 potentially impacted.

— Southern WI; east-central and southeast IA; most of IL. Scattered severe thunderstorms Wednesday. Damaging wind gusts, hail, and a tornado or two are the main hazards. I-39, I-43, I-55, I-57, I-64, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— WI; central and southern MN; most of IA; central and eastern SD; most of NE; northwest KS: Isolated severe thunderstorms possible Thursday. I-29, I-35, I-39, I-43, I-70, I-80, I-90, I-94 potentially impacted.

— Central SD; large portions of NE, KS, OK, TX: Heat Advisories through Friday. Temperatures as high as 105 deg F and heat index values as high as 114 deg F. I-20, I-35, I-40, I-44, I-70, I-80, I-90 impacted.

Eastern:

— Southeast PA; southern NJ; central and eastern MD; DC; DE; northern and northeast VA: Scattered severe thunderstorms this afternoon. Damaging winds and hail are the primary hazards. Strong winds from isolated thunderstorms may extend northward along the I-95 corridor into Maine. I-66, I-70, I-76, I-83, I-95, PA and NJ Turnpikes, Garden State Parkway potentially impacted.

— Central and southern MI; most of IN; western, central and northeast OH: Scattered severe thunderstorms Wednesday afternoon. Damaging winds and tornadoes are possible. I-64, I-65, I-69, I-70, I-71, I-75, I-76, I-77, I-80, I-90, I-94, I-96 potentially impacted.

— Southeast ME; central and southern NH and VT; eastern and southeast NY; MA; CT; RI; eastern PA; NJ; much of MD; northern DE; DC; northern VA: Widely scattered severe thunderstorms possible Thursday. I-66, I-70, I-76, I-78, I-80, I-81, I-83, I-84, I-87, I-88, I-89, I-91, I-93, I-95, MA, PA and NJ Turnpikes, NY Thruway, Garden State Parkway potentially impacted.

— Southern FL: Heat Advisories through this evening Heat index values may reach 108 deg F.

Click here for the extended outlook (updates every Thursday and Sunday evening).

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All the Graphics!