RV Weather Enterprises

• High pressure builds over Arizona, bringing record-high heat to much of the West and South.
• A small low pressure trough allows weak cold fronts and moisture to concentrate over the Midwest, the East and especially New England.
• Severe thunderstorms possible each day somewhere across the Plains to the Midwest and Northeast.

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Extended outlooks are more general in nature and higher level than the daily short term forecasts. Beyond a week, there is often significant uncertainty in the location and intensity of specific weather events. I will note where there is less, or greater, confidence than normal in these extended outlooks.

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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.

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Click here for animations of the coming week’s weather.

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From the RV Weather Summer Office in Colter Bay Wyoming

Big Picture for the coming weekend and next week:

• High pressure builds over Arizona, bringing record-high heat to much of the West and South.
• A small low pressure trough allows weak cold fronts and moisture to concentrate over the Midwest, the East and especially New England.
• Severe thunderstorms possible each day somewhere across the Plains to the Midwest and Northeast.

Temperature and Precipitation Outlook:

• Hotter than normal over the West, the South, and northern New England.
• Cooler than normal over the northern Plains, Upper Midwest and the Great Lakes region.
• Wetter than normal for the southern Plains, the Midwest, Mid-Atlantic region, and the Northeast.
• Drier than normal for the West (west of I-25), Texas, Louisiana and Florida.

Highlights by day (15 – 20 July):

1. Saturday:
   • Marginally severe weather possible across the eastern Great Lakes, Ohio Valley and the southern Appalachians.
   • Heavy rains over northeast New Mexico and the Texas Panhandle.
   • Record high temperatures possible for much of California, southern Nevada, the desert Southwest, central Texas and the south Florida Peninsula.
2. Sunday:
   • Chance of severe weather for South Dakota and Nebraska.
   • Heavy rains for New England.
   • Record high temperatures possible for the West, west of the Rockies, Arizona, central and southern Texas, and south Florida.
3. Monday:
   • Chance of severe weather for South Dakota and Nebraska.
   • Strong winds for the Rocky Mountain Front (Montana), southeast Idaho, and western and south-central Wyoming.
   • Record high temperatures possible for the southern California deserts, southern Nevada, the Four-Corners States, south Florida.
4. Tuesday:
   • Severe thunderstorms possible for the Dakotas.
   • Strong winds for northern Montana, western and southern Wyoming.
   • Record high temperatures for parts of Colorado and New Mexico, Texas and south Louisiana.
5. Wednesday:
   • Severe thunderstorms possible for the Upper Midwest, Mid-Atlantic States, and the coastal Northeast.
   • Record high temperatures possible for New Mexico, central and southern Texas, Louisiana.
6. Thursday:
   • Severe thunderstorms possible for the Great Lakes region.
7. Click here for the latest National Weather Service 3-7 Day outlook

Tropical Outlook:

• Tropical storm formation is possible over the central Atlantic northeast of Bermuda. No impacts to the U.S. are expected.

Outlook through the latter part of July and into early August (a 2-4 week outlook is by definition low confidence!):

• Warmer than normal temperature west of the Mississippi River and Florida.
• By early August, core of excessive heat moves into the Plains.
• Dry for the northern Plains, the Upper Midwest, and the Midwest.
• Wetter than normal for New England and maybe also New York, Pennsylvania, and the Middle Atlantic region.