- Dangerous heat expected this week from the Upper Midwest and Great Lakes to the Southern U.S.
- Monsoonal showers and thunderstorms may produce flash flooding in New Mexico through Tuesday.
- Slight risk of severe thunderstorms over parts of the the Northern Plains and Upper Midwest today.
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Pacific:
— No significant impacts to RV travel today or Tuesday.
Mountain:
— Eastern MT, northeast WY: Slight risk today of severe thunderstorms capable of producing large hail and damaging wind gusts. I-90, I-94 impacted.
— Southeast WY: High Wind Warning this afternoon and tonight. Gusts to 60 mph. I-25, I-80 impacted.
— Most of NM except eastern and northwest portions of state; far-west TX: Flood Watch through Tuesday evening for excessive monsoon rainfall. I-10, I-25, I-40 potentially impacted.
Central:
— ND; SD; northern KS; northwest half of MN: Slight risk today of severe thunderstorms capable of producing large hail and damaging wind gusts. I-29, I-90, I-94 potentially impacted.
— Eastern ND and adjacent northwest and west-central, central and south-central MN: Excessive Heat Warning through early tonight: Heat index values as high as 105 deg F. I-29, I-25, I-90, I-94 impacted.
Eastern:
— No significant impacts to RV travel today or Tuesday.
Severe Weather and Tropical Watches and Warnings
— See https://rvweather.com/warnings-watches-and-advisories/#SPC_Tornado_Watch for the latest Tornado and Severe Thunderstorm WATCHES
— See https://rvweather.com/warnings-watches-and-advisories/#NWS_Tornado_Warning for the latest Tornado, Severe Thunderstorm, and Flash Flood WARNINGS.
— See https://rvweather.com/warnings-watches-and-advisories/#NHC_Hurricane_Advisory for the latest Tropical system WARNINGS and information.
Heat Index Monday afternoon 20 June 
Rainfall amounts Monday night through Tuesday night 20-21 June
ALL entrances to Yellowstone National Park remain CLOSED. The South Loop will reopen at 8 a.m. Wednesday 22 June, but access will depend on your vehicle’s license plate. Please see Yellowstone’s flood recovery website for important information.
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Some useful links:
All the Latest RV Weather forecasts
Latest severe weather watches and warnings
Current near-term weather graphics
(For serious weather geeks!) National Weather Service Mesoscale Outlooks
General National Weather Service info
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