2007-04-03: YMW upper air data from FSL's server at NOAA in Boulder, CO. Forecast max temp from AVN MOS for Whitefield NH from nws.noaa.gov. === Interpolations from YMW data - temps:deg. F, altitudes:feet MSL === MSL *TI* Wdir@kts trig VirT 1.7 degrees/division ("`": Dry Adiabatic) ----- ---- -------- ---- . ---- ----------------------------------------- 15000 20.2 78 | -0.6 ` : 14500 19.6 77 | 1.0 ` : 14000 19.0 295 31 76 | 2.6 ` : 13500 18.4 75 | 4.2 ` : 13000 17.8 74 | 5.8 ` : 12500 17.3 73 | 7.6 ` : 12000 16.9 305 33 72 | 9.5 ` : 11500 16.5 72 | 11.5 ` : 11000 16.1 71 | 13.4 ` : 10500 15.7 70 | 15.4 ` : 10000 14.7 68 | 16.2 ` : 9500 13.7 67 | 17.0 ` : 9000 12.7 290 22 65 | 18.0 ` : 8500 12.0 64 | 19.4 ` : 8000 11.6 280 24 63 | 21.3 ` : 7500 11.2 62 | 23.3 ` : 7000 10.9 280 24 62 | 25.4 ` : 6500 10.5 61 | 27.4 ` : 6000 10.2 280 17 60 | 29.4 ` : 5500 9.4 59 | 30.7 ` : 5000 5.7 52 | 26.7 ` : 4500 4.7 50 | 27.6 ` : 4000 4.1 290 7 49 | 29.1 ` : 3500 3.4 48 | 30.5 ` : 3000 2.7 290 10 47 | 31.9 ` : 2500 2.0 45 | 33.3 ` : 2000 1.3 290 13 44 | 34.7 `: 1500 0.6 43 | 36.2 (CB: 1800) : 1000 -0.2 280 13 42 | 37.6 (High: 42) : 500 -0.9 41 | 39.0 :` === NWS NH+ME Weather Summary - 418 AM EDT TUE APR 3 2007 === A winter storm watch is in effect for the mountains and foothills of western Maine and northern New Hampshire Wednesday evening through Thursday morning! Winter has staged a comeback over the northeast United States as colder air and moisture are conspiring to bring cold and damp weather to the region for the balance of the week. Over northern New England, a mix of precipitation occurred during the overnight hours. Across much of New Hampshire and southern Maine, the precipitation fell mainly in the form of light rain, with only a mix of sleet and snow thrown in. Across the mountains of both states, snow was reported, but not much in the way of accumulation was noted. Across the rooftop of Maine, snow fell much of the overnight, with a couple of new inches of snow reported. At 400 am, temperatures ranged from a low of 26° at Frenchville Maine to a high of 39° at both Manchester and Portsmouth New Hampshire. A weak frontal boundary crossing the region this morning will continue to produce a variety of weather types. Across northern Maine, snow will fall, and a total of 3 to 5" of snow is expected by this afternoon. Elsewhere, rain and snow showers can be expected, with a new inch of snow possible in the mountains. Otherwise, expect damp and cold conditions with highs mainly in the 30s, which is 10 to 15° below normal for early April. For tonight, high pressure over the Canadian Maritimes will funnel drier air into northern New England, with cloudy and cold conditions but little in the way of precipitation. Lows tonight will drop to near or below freezing everywhere with relatively light winds. Low pressure approaching from the Great Lakes will spread more wintry precipitation into Maine and New Hampshire Wednesday. With temperatures near or just above the freezing mark, rain, sleet and snow is expected. In most places, little or no snow accumulation is expected during the daylight hours. A developing onshore wind will make it feel even colder. Another low pressure system developing near the southern New England coast Wednesday evening will track northeast, reaching the Gulf of Maine Thursday morning. Ahead of the low, steadier and heavier precipitation will develop. Across the mountains and foothills of western Maine and northern New Hampshire, the precipitation is expected to fall in the form of snow, and could fall heavily at times. More than 6" of snow is possible, and for this reason a winter storm watch has been raised for Wednesday evening into Thursday morning. Elsewhere, the mix of precipitation is expected to change to snow from north to south Wednesday night. Several inches of snow is possible just about everywhere else, as temperatures remain close to the freezing mark. Along the coast, the onshore wind may keep snow totals down a bit. The low pressure system will move into eastern Maine Thursday afternoon, and the steadiest precipitation should taper off from southwest to northeast. However, skies will remain most cloudy. Damp and cold conditions will also continue, with highs struggling to reach the 40° mark. Low pressure will take up semi-permanent residence in Quebec late this week, ensuring a continuation of the cold and damp conditions into the upcoming weekend. === The weather observed at WHITEFIELD, NH at 07:52 AM EST was: === The skies were cloudy. The prevailing visibility was 10 miles. Temperature: 34F ( 1C) Dewpoint: 30F ( -1C) Relative Humidity: 86% Winds from the ENE(070 degs) at 7 mph. Pressure: 1020.8 millibars. Altimeter:30.11 inches of mercury. === The weather observed at MOUNT WASHINGTON, NH at 07:53 AM EST was: === The weather reported was light snow and fog. The skies were unobserved. The prevailing visibility was 0 miles. Temperature: 25F ( -4C) Dewpoint: 25F ( -4C) Relative Humidity: 100% Winds from the NW (300 degs) at 18 mph. === MPV Terminal Aerodrome Forecast issued 3-Apr-2007 07:40 EDT === 8am: 17006kt P6sm Sct008 Ovc020; Tempo 8-10am: 3sm Br Bkn008 4pm: 15005kt P6sm Sct015 Ovc025 11pm: 16010g18kt P6sm Bkn015 Ovc025; Tempo 5-8am: 5sm -shra Br Ovc012