** Heads Up ** Major Pacific storm impacts the West starting Thursday and continues into Saturday. This storm is considerably warmer than the previous systems. Widespread, significant flooding possible across much of California. Feet of snow and hurricane force wind gusts for the higher elevations. Widespread high winds across the West on Friday.
- Threat of large hail tonight through Thursday over portions of the Southern Plains into the lower Mississippi Valley.
- A couple of rounds of snow for the Northern Plains and Upper Midwest.
- Big West Coast storm with flooding, snow, and high winds starts Thursday.
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Pacific:
— Southwest Coastal OR, south-central OR; much of the higher terrain of north-central and northwest CA: Winter Storm Warnings, Watches (above 1500 feet) and Advisories through Friday. The current Warnings end this morning. The Watches for the next storm start Thursday morning. Expect a few more inches of snow this morning. For the storm Thursday and Friday, 8-24 inches of snow and wind gusts to 70 mph are possible. The Winter storm Watch is effective above 4000 feet. I-5, US-97, US-101 impacted.
— South-central OR; northeast CA and northwest NV: High Wind Watch Thursday evening through Friday evening. Gusts to 75 mph. Wind gusts could reach 90 mph over exposed terrain. US-395 impacted.
— Northeast CA: Winter Weather Advisories today and Winter Storm Watches above 6500 feet Thursday afternoon through Sunday morning. 2-6 inches snow today and 8-18 inches for the next storm. Wind gusts to 55 mph starting late Thursday US-395 impacted.
— Northern CA I-5 corridor Shasta Valley, between Weed and Yreka: High Wind Watch Thursday afternoon through Friday afternoon. Gusts to 70 mph. I-5 highly impacted.
— Northern coastal CA: Wind Advisories Thursday and Thursday evening. Gusts to 65 mph. US-101, CA-1 impacted.
— Much of interior northern and central CA west of the Sierra; central CA coast: Wind Advisories Thursday afternoon through Friday afternoon. Gusts generally to 50 mph Major highways impacted include I-5, I-80, US-101, CA-1, CA-99.
— Most of north-central, central and south-central CA from south of Bakersfield to north of Redding; Sierra Nevada range; adjacent west-central NV: Flood Watches below 4000 feet: Heavy rains, snowmelt, saturated soils and already full streams will likely create significant flooding issues. Many of the valleys will see 1-3 inches rain, while the mountains may see 3-7 inches rain. Virtually all highways north of I-40 are potentially impacted.
— Southern NV: Strong winds this afternoon. Gusts 30-45 mph. I-15, US-6, US-93, US-95 impacted.
Mountain:
— Southeast and south-central ID: Winter Weather Advisory through early Thursday morning. 2-5 inches snow except 5-10 inches above 6500 feet. I-15, I-84 impacted.
— Portions of south-central MT, especially along the I-90 corridor; adjacent north-central WY: Dense Fog Advisories through midday. I-90 impacted.
— Central, east-central and southeast MT; northeast MT; western SD: Winter Weather Advisories this evening through Thursday evening. 3-6 inches snow and wind gusts to 35 mph. I-90, I-94 impacted.
— Southeast WY South Laramie Range and adjacent north-central CO: Winter Weather Advisory this morning for freezing drizzle. A light glaze of ice may form. Freezing drizzle may extend southward down the I-25 corridor to central CO. I-25, I-80 impacted over untreated areas.
— Southeast WY northern Snowy Range Foothills: High Wind Watch Friday and Friday night. Gusts to 60 mph. I-80 impacted.
— Northeast and east-central NM: Dense Fog Advisory through midday today. I-40 impacted.
— Southern and central UT; western and central CO; northwest and north-central NM; northern and central AZ: Strong winds this afternoon. Gusts 35-45 mph. I-15, I-17, I-25, I-40, I-70 impacted.
— Southeast WY; central CO along and west of the Front Range; north-central NM: Strong winds Thursday starting midmorning through mid-afternoon. Wind gusts 40-55 mph. I-25, I-40, I-70, I-80 impacted.
Central:
— Northwest MN and adjacent east-central ND: Winter Weather Advisories through this afternoon. 2-4 inches snow. I-29, I-94 impacted.
— SD; central and northeast NE; southwest MN; northwest IA: Winter Weather Advisories late tonight through Thursday night. 3-5 inches snow. I-29, I-80, I-90 impacted.
— Southern MN; northern and northeast IA; west-central and southern WI and adjacent northern IL: Winter Storm Watches Thursday afternoon through late Thursday night. 5-8 inches snow possible. I-35, I-39, I-43, I-80, I-90, I-94 impacted.
— Northeast TX; southeast OK; much of AR: Slight risk of flash flooding today and tonight. An additional 1-2 inches rain likely. I-30, I-40, potentially impacted.
— West-central and north-central TX; much of southern OK: Isolated severe thunderstorms with large hail possible today and this evening. I-20, I-35, I-44 impacted.
— Southeast OK and adjacent northeast TX; southern and central AR and adjacent northwest MS: Slight risk of flash flooding continues Thursday and Thursday night. An additional 1-3 inches of rain possible. I-30, I-40, I-55 potentially impacted.
— Northeast TX; southeast OK; much of AR; northern LA; southwest TN; northern MS: A few severe thunderstorms may produce large hail and damaging winds Thursday and Thursday night. I-20, I-22, I-30, I-35, I-40, I-49, I-55 potentially impacted.
— Central TX Gulf Coast: Dense Fog Advisories this morning. I-45 impacted.
— Southeast LA; MS Gulf Coast: Dense Fog Advisories this morning. I-10, I-12, I-55, I-59 impacted.
Eastern:
— No significant weather-related issues impact RV travel today or Thursday.
Tornado safety information for RVers (what to do!):
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National Weather Service Warnings, Watches and Advisories Wednesday morning 8 March 2023.
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Severe thunderstorm risk today and tonight 8 March 
Flash flood risk today 8 March 
Wind gusts this afternoon 8 March 
Likelihood of winter weather impacting RV travel today 8 March 
Flash Flood Risk Thursday 9 March 
Severe thunderstorm risk Thursday 9 March 
Wind gusts Thursday afternoon 9 March 
Likelihood of winter weather impacting RV travel Thursday 9 March 
Flash Flood Risk Friday 10 March 
24-hour precipitation amounts over California Thursday night – Friday night 9-10 March 
Wind gusts Friday afternoon 10 March 
Likelihood of winter weather impacting RV travel Friday 10 March (west) 
Likelihood of winter weather impacting RV travel Friday 10 March (east) 
Total snowfall accumulation through Friday night 10 March 
Total precipitation amounts through Friday night 10 March
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