A Dense Fog Advisory is in effect this morning until 10am for most the of the DC Metro area, including all of Montgomery County.
Clouds will stick around after the fog this morning , but the sun should start peek through and temperatures will likely reach the mid 70s in the afternoon.
More on the Dense Fog Advisory, per the National Weather Service:
* WHAT: Visibility one quarter mile or less in areas of
dense fog.
* WHERE: The District of Columbia, portions of central,
north central, northeast, northern and southern Maryland,
central, northern, northwest and western Virginia and
eastern West Virginia.
* WHEN: Until 10 AM EDT this morning
* IMPACTS: Hazardous driving conditions due to low
visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS.
If driving, slow down, use your headlights, and leave plenty of distance.
Snow totals are in from across the county after today’s snow storm that made things messy from the morning until the early afternoon across the area.
The forecast for this storm was fairly accurate, as expected snowfall for the area were between 2-5” depending on your location in the county
The totals below come from the National Weather Service from various times throughout the morning and afternoon.
Note: Not all Montgomery County areas are included in the report below.
Washington Grove 1 N 4.5 305 PM 3/12 Trained Spotter
Damascus 3 SSW 4.4 445 PM 3/12 Co-Op Observer
Damascus 1 SE 4.4 520 PM 3/12 Trained Spotter
Damascus 1 S 4.4 1205 PM 3/12 Trained Spotter
Clarksburg 1 SSE 3.7 1200 PM 3/12 Trained Spotter
Poolesville NE 3.5 145 PM 3/12 Trained Spotter
Olney 2.8 400 PM 3/12 NWS Employee
Laytonsville 2 WNW 2.5 615 PM 3/12 Trained Spotter
Gaithersburg 1 WNW 2.5 245 PM 3/12 CoCoRaHS
Norbeck 1 ESE 2.5 330 PM 3/12 Trained Spotter
Somerset 1 ENE 2.0 1130 AM 3/12 Trained Spotter
Montgomery Village 1 2.0 100 PM 3/12 Trained Spotter
Four Corners 1 ESE 1.7 1200 PM 3/12 Trained Spotter
Aspen Hill 1 SW 1.5 315 PM 3/12 Trained Spotter
Colesville 1.3 120 PM 3/12 Trained Spotter
The National Weather Service has upgraded NW MoCo to a Winter Storm Warning from 6am until 3pm. C/SE MoCo remains under an advisory from 7am until 3pm.
Winter Storm Warning (NW MoCo)
* WHAT…Heavy snow expected. Total snow accumulations of 3 to 6 inches. Northwest winds will gust around 45 to 55 mph.
* WHERE…Portions of north-central Maryland as well as western Loudoun County in Virginia and northern Fauquier County in Virginia.
* WHEN…From 6 AM this morning to 3 PM EST this afternoon. Rain
will change to snow between 7 AM and 9 AM this morning. A band of moderate to heavy snow is most likely through late this morning before tapering off to a lighter snow early this
afternoon.
* IMPACTS…Plan on slippery road conditions. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS…Visibility may be reduced to below one- quarter mile at times. Brief near blizzard conditions are
possible. Snowfall rates around one to two inches per hour are expected this morning.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
When venturing outside, watch your first few steps taken on
steps, sidewalks, and driveways, which could be icy and slippery,increasing your risk of a fall and injury.
Winter Weather Advisory (C/SE MoCo)
* WHAT…Snow expected. Total snow accumulations of 2 to 4 inches.
Northwest winds will gust around 45 to 55 mph.
* WHERE…Portions of central and northeastern Maryland, northern and central Virginia, and the District of Columbia, including most of the DC and Baltimore metro areas.
* WHEN…From 7 AM this morning to 3 PM EST this afternoon. Rain will change to snow between 7 AM and 9 AM this morning. Snow will be heaviest from mid to late morning before tapering off to a lighter snow early this afternoon.
* IMPACTS…Plan on slippery road conditions. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS…Visibility may be reduced to below one-quarter mile at times. Brief near blizzard conditions are
possible between 8 AM and noon. Snowfall rates around an inch per hour are expected this morning.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Slow down and use caution while traveling.
When venturing outside, watch your first few steps taken on
steps, sidewalks, and driveways, which could be icy and slippery, increasing your risk of a fall and injury.
There is about a 45-75% chance at more than 4 inches of snow, depending on where in MoCo you’re at according to the map below.
A Winter Weather Advisory is now in effect for all of MoCo from 7am until 3pm on Saturday.
Per the National Weather Service:
* WHAT…Snow expected. Total snow accumulations of 2 to 4 inches. Northwest winds will gust around 45 to 55 mph.
* WHERE…Portions of central and northeastern Maryland, northern and central Virginia, and the District of Columbia, including most of the DC and Baltimore metros.
* WHEN…From 7 AM to 3 PM EST Saturday. Rain will change to snow between 7 and 9 AM early Saturday. The steadiest snow will be through Saturday morning.
* IMPACTS…Plan on slippery road conditions. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS…Visibility may be reduced to below one- quarter mile at times. Brief near blizzard conditions are possible between 8 and 11 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS… Slow down and use caution while traveling. When venturing outside, watch your first few steps taken on steps, sidewalks, and driveways, which could be icy and slippery, increasing your risk of a fall and injury.
A Wind Advisory is also in effect from 6am Saturday until 1am Sunday
* WHAT…Northwest winds 25 to 35 mph with gusts up to 55 mph.
* WHERE…Portions of northern and central Maryland, northern Virginia, and the District of Columbia including the DC and Baltimore metro areas.
* WHEN…From 6 AM Saturday to 1 AM EST Sunday.
* IMPACTS…Gusty winds could blow around unsecured objects. Tree limbs could be blown down. Several power outages may result.
* ADDITIONAL DETAILS…A few gusts to around 60 mph are possible. Strong winds may persist into early Sunday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS… Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Prepare for power outages.
We’ll have an update for you with additional maps tonight.
A winter weather advisory has been issued for Northwest MoCo. This generally includes areas beginning at Germantown and points north/west (Clarksburg, Damascus, Poolesville, etc.).
Central/SE MoCo is not currently included in the advisory, as a little less precipitation is expected (see maps below). I fully expect all of MoCo and most of the DC Metro area to be included in the advisory later this morning.
A change from rain to snow is now expected sooner than previously anticipated.
A little more than half of MoCo is in the 2-3” range, with the rest in the 1-2” range. The “reasonable worst case scenario” map has most of MoCo at 4-5 inches. with the rest at 3-4 inches.
The advisory, per the National Weather Service:
WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 3 PM EST
SATURDAY…
* WHAT…Snow expected. Total snow accumulations of 2 to 4 inches. Northwest winds will gust around 45 to 55 mph.
* WHERE…Portions of central and northern Maryland as well as portions of northern Virginia.
* WHEN…From 6 AM to 3 PM EST Saturday. Rain will change to snow between 5 and 7 AM early Saturday morning. The steadiest snow will be through midday.
* IMPACTS…Plan on slippery road conditions. Gusty winds could bring down tree branches.
* ADDITIONAL DETAILS…Visibility may be reduced to below one- half mile at times.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Slow down and use caution while traveling.
When venturing outside, watch your first few steps taken on
steps, sidewalks, and driveways, which could be icy and slippery, increasing your risk of a fall and injury.
This morning we let you know that a period of snow is possible on Saturday following rainfall early in the day. Temps will drop into the 30s on Saturday afternoon and eventually the upper 20s, which would allow for snow in the afternoon.
The evening update from the National Weather Service had almost all of MoCo in the 1 inch range with Damascus in the 1-2″ range.
The latest update from 7:12pm has half of MoCo in the 1-2″ range and the other half in the 3-4″ range. Things can still change and we will keep you updated throughout the day tomorrow.
Below you’ll see the latest ‘Forecaster’s Discussion’ per the NWS, which hasn’t changed form earlier today:
Precipitation will rapidly transition over to snow behind the system`s cold front. When this will happen in any given spot will highly depend on the system`s ultimate track. Guidance today has trended further southeast with the track of the low, which lends itself to a cooler solution.
“As a result, the expected and high end totals have been upped across the area. That being said, considerable uncertainty still remains, and we would like to see multiple runs of the same trend before confidence increases.”
This morning we let you know that a period of snow is possible on Saturday following rainfall early in the day. Temps will drop into the 30s on Saturday afternoon and eventually the 20s. If they drop soon enough, we’ll likely see the rain change to snow before the system heads out.
The latest update from the National Weather Service has almost all of MoCo in the 1 inch range with Damascus in the 1-2″ range. Below you’ll see the latest ‘Forecaster’s Discussion’ per the NWS:
Precipitation will rapidly transition over to snow behind the system`s cold front. When this will happen in any given spot will highly depend on the system`s ultimate track. Guidance today has trended further southeast with the track of the low, which lends itself to a cooler solution.
“As a result, the expected and high end totals have been upped across the area. That being said, considerable uncertainty still remains, and we would like to see multiple runs of the same trend before confidence increases.”
We’ll keep an eye on it and have an update for you tomorrow morning.
Temperatures are expected to reach the low 50s today, but before we get there we’ll have to deal with some patchy fog and cold temperatures this morning that could cause a few slick spots. Below you”ll see an update from the National Weather Service:
Patches of dense fog has developed east of the Blue Ridge Mountains early this morning. With temperatures near or below freezing, there may be a few slippery spots during this time. Reduce speed and leave extra travel time and following distance. Be alert for slippery spots, and avoid braking or turning suddenly.
A period of snow is also possible on Saturday following rainfall early in the day. Temps will drop into the 30s on Saturday afternoon and eventually the 20s. If they drop soon enough, we’ll likely see the rain change to snow before the system heads out. As you’ll be able to read in the NWS ‘forecaster discussion’ below, it’s still unclear as to how much precipitation will be left by the time the cold air comes in.
Something to keep an eye on in case you have Saturday plans.
National Weather Service Forecaster’s Discussion:
Temperatures in the 40s and 50s ahead of the front will fall rapidly into the 20s and 30s behind the front Saturday afternoon (teens and single digits along the ridge tops). The potent upper-level trough will pass through the area behind the cold front Saturday afternoon/early evening. Given the strong dynamics with the upper-level trough, this does cause an anafrontal setup, where a period of precipitation is expected to occur on the cold side of the boundary.
Therefore, rain is likely to end as a period of snow for most areas. There is still some uncertainty as to how much precipitation will be left by the time the cold air arrives, but it does appear increasingly likely that there will be accumulating snow in the farther northern and western suburbs of Washington/Baltimore toward the Allegheny Highlands. The farther west you go, the higher the confidence is and that`s because the cold air will arrive sooner, and those areas are in a more favorable location given the synoptics (left exit of upper-level jet and just northwest of the 850mb lows track).
We are coming off of the warmest warmest couple days we’ve had in a while, but temperatures will be significantly cooler today with highs around 50 and even colder tomorrow with highs around 40.
You may have seen your weather app display a snowflake or let you know that some winter weather is possible tonight into tomorrow.
A period of rain and snow is likely early Wednesday morning. Temperatures have been warm and the ground will likely be too warm for anything to stick, but some snow is possible the further north/west you go. As you can see in the National Weather Service map below, the expected snowfall is less than an inch, with none expected in central and SE MoCo.
The high end amount shows half an inch to an inch and a half, depending on where you’re at in the county. Keep in mind that if this were to happen, it would likely only stick on grassy areas.
The probability of us getting more than in inch is about 2-20%, depending on your location in the county, per the map below.
This is less of a threat when it comes to closing anything down and more of a reminder that it’s still technically winter.A wintry mix is also possible for Friday into Saturday, but could also just be rain. We’ll monitor that one and have an update on this one later tonight.
There will be a high wind advisory in effect for MoCo from 11am Monday until 1am Tuesday.
Temperatures will likely reach the upper 70s, what a breezy start. Showers and possibly a thunderstorm are in the forecast, mainly after 4pm. Some storms could be severe, with damaging winds. Winds could gust as high as 46 mph. Chance of precipitation is ~80%. Rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Per the National Weather Service (Wind Advisory):
* WHAT…Southwest winds 15 to 25 mph with gusts up to 50 mph expected shifting to northwest this evening.
* WHERE…Portions of The District of Columbia, central, north central, northeast, northern and southern Maryland and central, northern and northwest Virginia.
* WHEN…From 11 AM this morning to 1 AM EST Tuesday.
* IMPACTS…Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
PRECAUTIONARY/PREPAREDNESS ACTIONS… Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.
A Winter Weather Advisory remains in effect for MoCo, until 7am in Central and Southeast MoCo and until 10am in Northwest MoCo.
The advisory is calling for about a tenth of an inch of ice for Northwest MoCo and up to a tenth of an inch for Central and Southeast MoCo.
Currently temperatures are hovering around the freezing mark with some freezing drizzle/rain falling, which could make for slick conditions, but as you see in the tweet below from the National Weather Service, temperatures should slowly rise above freezing overnight.
Temperatures are expected to remain steady or slowly rise tonight as low pressure approaches from the west and winds turn more southeasterly. Steadier, heavier rain (freezing rain at higher elevations) is expected to overspread the area later this evening. pic.twitter.com/75yCF4CBMy
— NWS Baltimore-Washington (@NWS_BaltWash) February 25, 2022
By the time the morning commute gets started, most roads should just be wet, but there could still be some slick areas the further north you go.
The most recent map from the NWS is from 5:09pm today and is pretty similar to the maps from the last 24 hours showing very light ice across the board for MoCo.
Pencil Prediction for Friday, 2/25/22: 1.5 Pencils
While there’s a chance temperatures stay at or below freezing and things are a lot slicker than expected during the morning commute, right now it doesn’t look very likely.
