Station Name: DEAD RUN AT WHANN AVENUE NEAR MCLEAN, VA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 226 feet

Nearest Address:
800 Whann Ave
McLean, VA 22101
Fairfax County

GPS Coordinates: 38.95977716, -77.1756743

Nearby Water Temperatures

Winter Weather Advisory issued February 22 at 8:38AM EST until February 23 at 10:00AM EST by NWS Baltimore MD/Washington DC

Effective: Sun February 22, 2026, 8:38 AM
Expires: Sun February 22, 2026, 4:45 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches with localized amounts around 5 inches. Northwest winds gusting between 30 and 40 mph overnight through Monday. * WHERE...District of Columbia, central and southern Maryland, and northern Virginia. * WHEN...From 5 PM this afternoon to 10 AM EST Monday. Rain will change to snow between 4 PM and 7 PM this afternoon and evening. The steadiest snow is expected tonight before tapering off Monday morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Winter Weather Advisory issued February 22 at 2:06PM EST until February 23 at 10:00AM EST by NWS Baltimore MD/Washington DC

Effective: Sun February 22, 2026, 2:06 PM
Expires: Sun February 22, 2026, 10:15 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches with localized amounts around 5 inches. Northwest winds gusting between 30 and 40 mph overnight through Monday. * WHERE...District of Columbia, central and southern Maryland, and northern Virginia. * WHEN...From 5 PM this afternoon to 10 AM EST Monday. Rain or a rain and snow mix will change to all snow between 4 PM and 6 PM late this afternoon and early evening. The steadiest snow will be tonight. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Winter Storm Warning issued February 22 at 8:38AM EST until February 23 at 10:00AM EST by NWS Baltimore MD/Washington DC

Effective: Sun February 22, 2026, 8:38 AM
Expires: Sun February 22, 2026, 4:45 PM

* WHAT...Heavy snow expected. Total snow accumulations between 3 and 6 inches. For elevations above 1000 feet, snow accumulations of 6 to 12 inches are expected. Northwest winds gusting around 30 to 40 mph overnight through Monday. * WHERE...Portions of central and north central Maryland, northern and northwest Virginia, and panhandle West Virginia. * WHEN...From 3 PM this afternoon to 10 AM EST Monday. Rain or a rain and snow mix will change to all snow between 3 and 6 PM this afternoon and evening. Snow will continue through tonight before tapering off Monday morning. Most of the snow accumulation will occur tonight into early Monday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Visibility will be reduced to below one-half mile at times in falling and blowing snow overnight into Monday morning.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

This is only a test for monitoring of vital dissemination systems.

Effective: Sun February 22, 2026, 7:27 PM
Expires: Sun February 22, 2026, 7:37 PM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.

Winter Storm Warning issued February 22 at 2:06PM EST until February 23 at 10:00AM EST by NWS Baltimore MD/Washington DC

Effective: Sun February 22, 2026, 2:06 PM
Expires: Sun February 22, 2026, 10:15 PM

* WHAT...Heavy snow expected. Total snow accumulations between 3 and 6 inches for the lower elevations. For elevations elevations above 1000 feet, snow accumulations of 6 to 8 inches are expected with localized amounts around a foot on the ridge tops of the Catoctin Mountains. Northwest winds gusting around 30 to 45 mph overnight through Monday. * WHERE...Portions of central and north central Maryland, northern and northwest Virginia, and panhandle West Virginia. * WHEN...Until 10 AM EST Monday. Rain or a rain and snow mix will change to snow between 4 PM and 6 PM late this afternoon and evening. The steadiest snow will be this evening before tapering off overnight into early Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Visibility will be reduced to below one-half mile at times in falling and blowing snow overnight into Monday morning.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.