Three things to know about weather for RVers and travelers Friday 11 August

  • Severe thunderstorms and heavy rainfall possible today and into the weekend for the Plains, Great Lakes and Northeast.
  • Dangerous heat wave continues across the South and Southeast.
  • Heat will expand into the West and Northwest later this weekend, then continue into most of next week.

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Starting Monday morning, 27 November, this site will be down for a major upgrade. 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.


— Southwest WA; western OR; north-central CA: Excessive Heat Watch Sunday through Thursday. High temperatures 97-108 deg F. I-84, I-90 potentially impacted.


— South-central NM McBride burn scar: Flood Watch this afternoon and evening. Rainfall rates in thunderstorms may exceed 1 inch per hour.


— Central and eastern SD; north-central KS: Severe thunderstorms possible Saturday. Damaging wind gusts and hail are the primary threats. I-29, I-90 potentially impacted.

— Southwest KS and adjacent southeast CO; OK and TX Panhandles: Severe thunderstorms possible Saturday. Damaging wind gusts are the primary threat. I-27, I-40 potentially impacted.

— Central and southeast MN; much of WI; IL; eastern and southern IA; MO; southeast NE; eastern KS: Severe thunderstorms capable of large hail, damaging gusts, and perhaps a tornado or two are possible today. I-24, I-29, I-35, I-39, I-43, I-44, I-55, I-57, I-64, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Southeast NE; eastern KS; MO; southern IL: Severe thunderstorms possible Sunday afternoon and Sunday night. I-24, I-29, I-35, I-44, I-55, I-57, I-70, I-72 potentially impacted.

— Southern MO; southern IL; western KY; western and north-central TN; northern MS; northeast AR: Dense Fog Advisories through early to mid-morning. I-22, I-24, I-40, I-55, I-57, I-65, I-69 impacted.

— Central and southeast MS; central and southern AL; FL Panhandle: Isolated strong to severe thunderstorms possible today. Strong wind gusts and some hail are the primary hazards. I-10, I-20, I-55, I-59, I-65, I-85 potentially impacted.

— Much of TX and southeast NM; central and eastern OK and KS; southwest and southern MO; AR; LA; most of MS; parts of southern and central AL; FL Panhandle: A combination of Excessive Heat Warnings, Watches and Advisories through Saturday. Heat index values 105-116 deg F. I-10, I-12, I-20, I-30, I-35, I-40, I-44, I-45, I-49, I-55, I-59, I-65, I-70 impacted.


— Southeast IN; much of OH, PA, and NY; northern NJ; western MA and CT: Severe thunderstorms possible Saturday. Damaging winds, hail, and a tornado or two all possible. I-64, I-70, I-71, I-74, I-75, I-76, I-77, I-78, I-79, I-80, I-81, I-83, I-84, I-86, I-87, I-88, I-90, I-95, I-99, OH, PA, NJ, Mass Turnpikes, NY Thruway potentially impacted.

— SC and adjacent southern NC; much of GA and adjacent northern FL; FL Panhandle; Isolated strong to severe thunderstorms possible today. Strong wind gusts and some hail are the primary hazards. I-10, I-16, I-20, I-26, I-74, I-75, I-77, I-85, I-95 potentially impacted.

— Southern GA; FL: A combination of Excessive Heat Warnings, Watches and Advisories through Saturday. Heat index values 110-120 deg F. I-4, I-10, I-75, I-95 impacted.

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

Severe thunderstorm risk today and tonight.
Wildfire smoke concentrations late this afternoon and evening Friday 11 August
Severe thunderstorm risk tomorrow and tomorrow night.
Total rainfall amounts for the next three days

Current Severe Thunderstorm and Tornado Watches from the National Weather Service Storm Prediction Center

Tropical weather outlook from the National Hurricane Center

Tornado safety information for RVers (what to do!):

Access to real-time road information:

Phone numbers and websites for road conditions in all 50 states. Courtesy of the Cheyenne WY Weather Forecast Office

Some useful links:

High-resolution radar

Your local forecast

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