Three things to know about weather for travelers Sunday 2 July

Excessive heat continues across interior California and the Desert Southwest
Severe thunderstorms and heavy rainfall will affect portions of the Ohio Valley, Mid-Atlantic Region and into areas of the Northeast.
Chance for Independence Day severe thunderstorms across the southern and central High Plains into the upper Mississippi Valley.

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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.

Happy Summer Solstice! Enjoy the longest day(light) of the year!

From the RV Weather Summer Office in Moose 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:

— East-central CA including Mono County and eastern slopes of the southern Sierra Nevada: Flood Watches continue through Wednesday for snow melt. Flooding impacting rural roads and campgrounds is likely. US-395 potentially impacted.

— CA Sacramento and San Joaquin Valleys: Excessive Heat Warnings continue through late this evening. High temperatures 105-112 deg F. I-5, I-80, CA-99 impacted.

— Much of southeast CA; southern NV: Excessive Heat Warnings Saturday continue through Monday. High temperatures will range from 105 deg F in Owens Valley to 120-125 deg F in Death Valley. Hottest temperatures below 5000 feet. I-8, I-10, I-15, I-40, US-395, CA-58 potentially impacted.

Mountain:

— South-central and southeast MT; north-central WY: Isolated strong to severe thunderstorms this afternoon. Damaging wind and hail possible. I-90 potentially impacted.

— South-central and southeast MT; much of northern WY: Scattered severe thunderstorms Monday. Winds and hail are the primary threats, but a tornado or two also possible over southeast MT and northeast WY. I-25, I-90 potentially impacted.

— Central and southeast ID; western WY: Strong winds Monday afternoon. Gusts 30-40 mph. I-15, I-80 impacted.

— Eastern CO; northeast and east-central NM: Isolated strong to severe thunderstorms this afternoon. Damaging wind and hail possible. I-40, I-70, I-76 potentially impacted.

— Northeast and east-central CO and adjacent southeast WY: Locally severe thunderstorms expected Tuesday. I-25, I-70, I-76, I-80 potentially impacted.

— Western, southwest and portions of southern AZ: Excessive Heat Warning Saturday through Tuesday. Afternoon temperatures 107 – 115 deg F. I-8, I-10, I-40 impacted.

— AZ Grand Canyon below 4000 feet: Excessive Heat Warning through Wednesday. Temperatures may reach 115 deg F at Phantom Ranch.

— Portions of central and north-central NM: Flood Watches late this morning through late this evening. Thunderstorms with rain rates over 1 inch per hour may create localized flash flooding. Hermit’s Peak Half Canyon and McBride burn scars are particularly vulnerable. The region in north-central NM is just west of I-25.

Central:

— Northern, northeast and east-central ND; northwest MN: Isolated strong to severe thunderstorms this afternoon. Damaging wind and hail possible. I-29 potentially impacted.

— Central and southern SD; west-central MN: Scattered severe thunderstorms possible on Monday. Damaging winds, hail and a tornado or two all possible. I-29, I-90, I-94 potentially impacted.

— Northern KS; southern, central and eastern NE; southeast SD; the northwestern half of IA; much of MN except the northwestern portion of the state; northwest WI: Strong and locally severe thunderstorms expected on Tuesday. I-29, I-35, I-70, I-80, I-90, I-94 potentially impacted.

— Southwest NE; western KS; western OK and TX Panhandles: Isolated strong to severe thunderstorms this afternoon. Damaging wind and hail possible. I-27, I-40, I-70, I-80 potentially impacted.

— Northeast and east-central AR; southeast MO; far-southern IL; KY; TN; northern MS; northern AL: Scattered strong to severe thunderstorms, accompanied by locally damaging wind and hail, are possible today. Chance for a tornado or two over KY and TN. I-22, I-24, I-40, I-55, I-57, I-64, I-65, I-69, I-70, I-72, I-74, I-75 potentially impacted.

Eastern:

— Coastal ME: Dense Fog Advisories this morning. I-95, US-1 impacted.

— Central and northern OH; central and northern PA; much of NY except far northern and western portions of the state; northwest CT; central and western MA; most of VT and NH; southern ME: Slight risk of flash flooding today and tonight. I-70, I-71, I-75, I-76, I-77, I-79, I-80, I-81, I-84, I-86, I-88, I-89, I-90, I-91, I-93, I-95, I-99, OH Turnpike, NY Thruway potentially impacted.

— Southern IN; KY; TN; central and southern OH; western WV; southeast PA; central and eastern MD; DC; northern and central VA; DE; central and southern NJ: Scattered strong to severe thunderstorms, accompanied by locally damaging wind and hail, are possible today. Chance for a tornado or two over KY and TN. I-24, I-64, I-65, I-66, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-79, I-81, I-83, I-85, I-95, PA and NJ Turnpikes, Garden State Parkway potentially impacted.

— Southern NJ; DELMARVA Peninsula; central and eastern MD; DC; central and eastern VA; much of central and eastern NC; northwest and north-central SC: Scattered severe thunderstorms on Monday may produce damaging winds and hail. A tornado or two also possible over southern and eastern VA and much of NC. I-26, I-40, I-64, I-66, I-70, I-74, I-77, I-83, I-85, I-95, NJ Turnpike, Garden State Parkway potentially impacted.

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

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