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| D.C. area forecast: Snow, rain, and wintry mix today, areas of snow tonight, then gradual drying Tuesday (UPDATES) | |
| (about 1 hour later) | |
| * Winter weather advisory through Tuesday morning (see map) | Winter storm warning from Winchester to Hagerstown (I-81) and west * | * Winter weather advisory through Tuesday morning (see map) | Winter storm warning from Winchester to Hagerstown (I-81) and west * |
| 6:30 a.m. update: This map from Weather Underground nicely shows the rain-snow line (just after 6:20 a.m.) and regional view of temperatures which range from the low-to-mid 30s to the north and northwest where it’s snowing, and upper 30s to the south where’s raining. Again, look for this rain-snow line to ooze south, but it may have trouble getting south of D.C. this morning. | |
| In our northern suburbs where it’s snowing, some light accumulation is likely over the next few hours as snow continues, especially on grassy areas and untreated surfaces. | |
| 6:00 a.m. update: Cold air is seeping south and reports indicate the rain has transitioned to snow around Columbia, Md. and is changing to snow in central and northern Montgomery County and northern Loudoun County. We may start seeing the rain mix with snow into the northern part of the Beltway area over the next hour, but the push south may stall some after daylight arrives. So far, reports indicate just wet roads, but use caution where it’s snowing… | |
| @capitalweather Snowing in Laytonsville, 34° — Jill Daly (@jilltrip) January 26, 2015 | |
| @capitalweather Snowing in Laytonsville, 34° | |
| — Jill Daly (@jilltrip) January 26, 2015 | |
| @capitalweather snowing in Silver Spring, just north of the Beltway, near Kensington. but not sticking to anything. — J. Freedom du Lac (@jfdulac) January 26, 2015 | |
| @capitalweather snowing in Silver Spring, just north of the Beltway, near Kensington. but not sticking to anything. | |
| — J. Freedom du Lac (@jfdulac) January 26, 2015 | |
| @capitalweather roads still okay in Baltimore, but it is snowing lightly. — Johanna Schein (@Jorose77) January 26, 2015 | |
| @capitalweather roads still okay in Baltimore, but it is snowing lightly. | |
| — Johanna Schein (@Jorose77) January 26, 2015 | |
| 5:30 a.m. update: In the immediate D.C. area, mostly rain is falling with temperatures in the upper 30s to around 40. However, rain turns to snow around I-70 and points north. BWI Airport, Frederick, and Hagerstown were all reporting snow at 5 a.m. The rain-snow line will try to shift south through Howard and Montgomery County and into Loudoun County over the next hour or so, but may face some resistance reaching the District. We’ll keep an eye on this and provide updates. | 5:30 a.m. update: In the immediate D.C. area, mostly rain is falling with temperatures in the upper 30s to around 40. However, rain turns to snow around I-70 and points north. BWI Airport, Frederick, and Hagerstown were all reporting snow at 5 a.m. The rain-snow line will try to shift south through Howard and Montgomery County and into Loudoun County over the next hour or so, but may face some resistance reaching the District. We’ll keep an eye on this and provide updates. |
| Roads should be just wet around metro D.C., but look out for slicks spots from I-70 and to the north and northwest – mostly on untreated areas (side roads, driveways, and sidewalks). We’ll have more specifics on road conditions in our next update. | Roads should be just wet around metro D.C., but look out for slicks spots from I-70 and to the north and northwest – mostly on untreated areas (side roads, driveways, and sidewalks). We’ll have more specifics on road conditions in our next update. |
| TODAY’S DAILY DIGIT A somewhat subjective rating of the day’s weather, on a scale of 0 to 10. | TODAY’S DAILY DIGIT A somewhat subjective rating of the day’s weather, on a scale of 0 to 10. |
| 3/10: Probably not enough snow to appease snow lovers, and otherwise cold and raw. | 3/10: Probably not enough snow to appease snow lovers, and otherwise cold and raw. |
| EXPRESS FORECAST | EXPRESS FORECAST |
| Today: Snow and/or mixed precipitation at times. Highs: 32-37 Tonight: Snow showers likely. Lows: 25-30 Tomorrow: Morning flurries, then slow clearing, windy. Highs: 30-35 | Today: Snow and/or mixed precipitation at times. Highs: 32-37 Tonight: Snow showers likely. Lows: 25-30 Tomorrow: Morning flurries, then slow clearing, windy. Highs: 30-35 |
| FORECAST IN DETAIL | FORECAST IN DETAIL |
| Some snow, rain, and mixed precipitation are with us at times today, but this evening and tonight may hold the best chance for snow accumulation in the immediate metro area as temperatures fall below freezing. Snow showers and flurries could linger into Tuesday morning, before the monster storm off New England is out of our face. The remainder of the week is chilly and we’ll have to watch two more clippers for some light snow potential Thursday and Sunday. | Some snow, rain, and mixed precipitation are with us at times today, but this evening and tonight may hold the best chance for snow accumulation in the immediate metro area as temperatures fall below freezing. Snow showers and flurries could linger into Tuesday morning, before the monster storm off New England is out of our face. The remainder of the week is chilly and we’ll have to watch two more clippers for some light snow potential Thursday and Sunday. |
| Today (Monday): Snow, rain, and/or mixed precipitation are likely this morning between about 5 a.m. and 11 a.m. The steadiest and heaviest activity is likely northwest and west of the immediate metro area towards northern Fauquier, Loudoun and Frederick (Md.) counties (where mostly snow is favored). These areas have the best chance of some accumulation. | Today (Monday): Snow, rain, and/or mixed precipitation are likely this morning between about 5 a.m. and 11 a.m. The steadiest and heaviest activity is likely northwest and west of the immediate metro area towards northern Fauquier, Loudoun and Frederick (Md.) counties (where mostly snow is favored). These areas have the best chance of some accumulation. |
| Closer to the city, precipitation is generally lighter and temperatures are a bit warmer, so we may have rain at times, and snow accumulation becomes more challenging. However, there’s an outside chance that some heavier snow bands sneak into the area which could whiten the ground, reduce the visibility and even cause a few slick spots. The precipitation type may very between snow, sleet and rain, with snow favored during heavier periods of precipitation. | Closer to the city, precipitation is generally lighter and temperatures are a bit warmer, so we may have rain at times, and snow accumulation becomes more challenging. However, there’s an outside chance that some heavier snow bands sneak into the area which could whiten the ground, reduce the visibility and even cause a few slick spots. The precipitation type may very between snow, sleet and rain, with snow favored during heavier periods of precipitation. |
| Note that precipitation is likely to coincide with the morning commute and it doesn’t take much to cause travel issues. Most main roads should be ok, but use special caution on untreated roads, driveways and sidewalks. | |
| From late morning to mid-afternoon, precipitation may taper off a bit with just scattered areas of light snow, sleet and/or rain, with temperatures into the mid-to-upper 30s. | From late morning to mid-afternoon, precipitation may taper off a bit with just scattered areas of light snow, sleet and/or rain, with temperatures into the mid-to-upper 30s. |
| By late into the afternoon, we may see bands of snow cycle back into the area with slowly falling temperatures. This could lead to some delays and slick spots for the evening commute. Confidence: Low-Medium | By late into the afternoon, we may see bands of snow cycle back into the area with slowly falling temperatures. This could lead to some delays and slick spots for the evening commute. Confidence: Low-Medium |
| Tonight: Areas of snow are likely but exactly where and how heavy are hard to pin down. We tend to favor areas east of I-95 getting more snow; however, some models have forecast a band farther west from near Sterling Va. out towards I-81. Generally, there’s the potential for a coating to a couple inches – but we may not have a great idea of exactly what to expect until this snow starts developing. Temperatures drop back below freezing in most areas with lows in the upper 20s to near 30. Confidence: Low-Medium | Tonight: Areas of snow are likely but exactly where and how heavy are hard to pin down. We tend to favor areas east of I-95 getting more snow; however, some models have forecast a band farther west from near Sterling Va. out towards I-81. Generally, there’s the potential for a coating to a couple inches – but we may not have a great idea of exactly what to expect until this snow starts developing. Temperatures drop back below freezing in most areas with lows in the upper 20s to near 30. Confidence: Low-Medium |
| For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend… | For related traffic news, check out Dr. Gridlock. Keep reading for the forecast through the weekend… |
| Tomorrow (Tuesday): Snow flurries or scattered snow showers are possible in the morning but should end pretty quickly. The sun should come out by the afternoon as a strong wind cranks up. Highs are only 30-35. Confidence: Medium | Tomorrow (Tuesday): Snow flurries or scattered snow showers are possible in the morning but should end pretty quickly. The sun should come out by the afternoon as a strong wind cranks up. Highs are only 30-35. Confidence: Medium |
| Tomorrow night: Mostly clear, windy and very cold. Lows range from the upper teens in our colder suburbs to the low-to-mid 20s downtown. Wind chills dip into the teens and single digits. Confidence: Medium-High | Tomorrow night: Mostly clear, windy and very cold. Lows range from the upper teens in our colder suburbs to the low-to-mid 20s downtown. Wind chills dip into the teens and single digits. Confidence: Medium-High |
| A LOOK AHEAD | A LOOK AHEAD |
| Wednesday should be mostly sunny, breezy in the morning, and cold. Highs aim for 30-35. High clouds increase late Wednesday night, with lows near 20 downtown with some teens in our colder suburbs. Confidence: Medium | Wednesday should be mostly sunny, breezy in the morning, and cold. Highs aim for 30-35. High clouds increase late Wednesday night, with lows near 20 downtown with some teens in our colder suburbs. Confidence: Medium |
| Another clipper zooms through the area Thursday and, depending on its exact track, could produce a period of snow or mixed precipitation. It doesn’t look like a big deal and it may deposit its narrow stripe of snow to our north, but it’s worth keeping an eye on. Highs reach 35-40. A few snow showers or lingering flurries could linger into Thursday evening, with overnight lows in the 20s. Confidence: Low-Medium | Another clipper zooms through the area Thursday and, depending on its exact track, could produce a period of snow or mixed precipitation. It doesn’t look like a big deal and it may deposit its narrow stripe of snow to our north, but it’s worth keeping an eye on. Highs reach 35-40. A few snow showers or lingering flurries could linger into Thursday evening, with overnight lows in the 20s. Confidence: Low-Medium |
| SNOW POTENTIAL INDEX A daily assessment of the potential for at least 1 inch of snow in the next week, on a 0-10 scale. | SNOW POTENTIAL INDEX A daily assessment of the potential for at least 1 inch of snow in the next week, on a 0-10 scale. |
| 7/10 (→): If we find a way to not pick up an inch by Tuesday morning, clippers Thursday and Sunday may offer 2nd and 3rd chances. | 7/10 (→): If we find a way to not pick up an inch by Tuesday morning, clippers Thursday and Sunday may offer 2nd and 3rd chances. |
| Cold high pressure builds into the region for Friday and Saturday. Under partly sunny skies, highs are only in the low-mid 30s, with overnight lows in the 20s. Confidence: Medium | Cold high pressure builds into the region for Friday and Saturday. Under partly sunny skies, highs are only in the low-mid 30s, with overnight lows in the 20s. Confidence: Medium |
| The third clipper of the week could race into the region on Sunday and bring another round of snow or mixed precipitation, the specifics of which will depend on its exact track. High should be in the 30s. Confidence: Medium | The third clipper of the week could race into the region on Sunday and bring another round of snow or mixed precipitation, the specifics of which will depend on its exact track. High should be in the 30s. Confidence: Medium |