- Heavy rains and some flash flooding likely this afternoon through Thursday across the Four Corners Region.
- Isolated severe thunderstorms late this afternoon and evening across the Upper Great Lakes.
- Flash Flood potential today for the central Sierra Nevada mountains of California.
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Pacific:
— CA central Sierra Nevada Mountains: Flood Watch through this evening. Be especially alert if you are near or downstream of any burn scars. I-80, US-395 potentially impacted.
— Eastern NV: Strong winds this afternoon. Gusts 30-40 mph. I-15, I-80, US-50 impacted.
— Eastern NV: Strong winds Wednesday afternoon. Gusts 30-40 mph. I-15, I-80, US-50 impacted.
Mountain:
— Southeast and east-central UT; west-central and southwest CO; northwest and west-central NM; north-central; northeast and east-central AZ: Flood Watches from midday today through Thursday evening. 1-3 inches of rain likely in some locations. I-17, I-40, I-70 potentially impacted.
— South-central NM: Flood Watch this afternoon and evening.
Central:
— Northern WI and western MI Upper Peninsula: Isolated strong to severe thunderstorms late this afternoon and evening may produce large hail. I-94, US-2 potentially impacted.
Eastern:
— Southern IN and southwest OH: Dense Fog Advisories this morning. I-65, I-71, I-74, I-75 impacted.
— Central and northeast OH; northwest PA; western NY: Severe thunderstorms with damaging winds and large hail are possible on Wednesday. I-70, I-71, I-76, I-77, I-79, I-80, I-81, I-88, I-90, I-99, OH and PA Turnpikes potentially impacted.
Severe Weather and Tropical Watches and Warnings
— See https://rvweather.com/warnings-watches-and-advisories/#NHC_Hurricane_Advisory for the latest WARNINGS and information on Tropical Storm FIONA.
— 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.
Flash Flood threat Wednesday and Wednesday night 21 September Total expected rainfall through Friday evening 23 September
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Some useful links:
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(For serious weather geeks!) National Weather Service Mesoscale Outlooks
General National Weather Service info
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