McHenry, MD Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Mchenry.

Use the Radar Maps link provided to understand the trajectory of a storm.

Monitoring message only. Please disregard.

Winter Weather Advisory issued November 21 at 2:50PM EST until November 21 at 10:00PM EST by NWS Baltimore MD/Washington DC

* WHAT...For the first Winter Weather Advisory, snow. Additional snow accumulations 1 to 2 inches. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations 3 to 6 inches. Winds gusting as high as 40 mph. * WHERE...In Maryland, Extreme Western Allegany County. In West Virginia, Western Mineral County. * WHEN...For the first Winter Weather Advisory, until 10 PM EST this evening. For the second Winter Weather Advisory, from 6 AM to 6 PM EST Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the commutes through Friday evening.

Winter Weather Advisory issued November 21 at 2:50PM EST until November 22 at 6:00PM EST by NWS Baltimore MD/Washington DC

* WHAT...For the first Winter Weather Advisory, snow. Additional snow accumulations 1 to 2 inches. For the second Winter Weather Advisory, mixed precipitation expected. Total snow accumulations 3 to 6 inches. Winds gusting as high as 40 mph. * WHERE...In Maryland, Extreme Western Allegany County. In West Virginia, Western Mineral County. * WHEN...For the first Winter Weather Advisory, until 10 PM EST this evening. For the second Winter Weather Advisory, from 6 AM to 6 PM EST Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the commutes through Friday evening.

Winter Storm Warning issued November 21 at 2:50PM EST until November 23 at 12:00AM EST by NWS Baltimore MD/Washington DC

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches, with locally 1 to 2 feet along the ridgetops. Winds gusting as high as 45 mph Friday afternoon into Friday night. * WHERE...Garrett County. * WHEN...Until midnight EST Friday Night. Bursts of moderate to heavy snow will impact this evening's commute while temperatures fall well below freezing. The most widespread and heaviest snow will be late Friday morning through Friday evening with peak snowfall rates around 1 to 2 inches per hour. The strong winds will coincide with the heavy snow, making the Friday evening commute very dangerous due to snow covered surfaces and visibility below 1/4 mile at times. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact the commutes through Friday evening. * ADDITIONAL DETAILS...Near blizzard conditions are possible Friday. Snow may transition to a period of freezing rain or drizzle Friday night into Saturday morning.