2007-04-02: 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 20.8 82 | 3.7 ` : 14500 20.4 82 | 5.6 ` : 14000 19.9 210 41 81 | 7.4 ` : 13500 19.5 80 | 9.3 ` : 13000 19.0 79 | 11.1 ` : 12500 18.5 78 | 12.9 ` : 12000 18.1 200 37 77 | 14.8 ` : 11500 17.6 77 | 16.6 ` : 11000 17.1 76 | 18.4 ` : 10500 16.5 75 | 19.9 ` : 10000 15.9 73 | 21.5 ` : 9500 15.2 72 | 23.1 ` : 9000 14.6 210 38 71 | 24.6 ` : 8500 14.0 70 | 26.2 ` : 8000 13.4 215 38 69 | 27.8 ` : 7500 12.8 68 | 29.4 ` : 7000 12.3 220 37 67 | 31.0 ` : 6500 11.7 66 | 32.6 ` : 6000 11.1 215 32 65 | 34.2 ` : 5500 10.5 64 | 35.9 ` : 5000 9.9 63 | 37.5 ` : 4500 9.3 62 | 39.1 ` : 4000 8.7 210 29 61 | 40.7 ` : 3500 8.1 59 | 42.3 ` : 3000 7.5 185 31 58 | 43.9 ` : 2500 4.2 52 | 40.5 ` : 2000 1.4 150 28 47 | 38.3 ` : 1500 -0.2 45 | 37.9 (High: 45, CB: 1700) :` 1000 -1.3 145 20 44 | 38.8 :` 500 -2.3 42 | 39.6 : ` === NWS NH+ME Weather Summary - 431 AM EDT MON APR 2 2007 === The high pressure system that brought the mainly clear skies and seasonably cool weather over the weekend has moved offshore. In its wake, winter weather will make a return to northern New England this week, as a series of lows pressure systems bring a variety of weather types to the region. Rain overspread Maine and New Hampshire during the overnight hours. The rain mixed with sleet and even a few wet snowflakes at the start across New Hampshire and western Maine, but no accumulation was noted. Over northern and eastern Maine, skies were mainly cloudy, with rain just entering downeast Maine. At 400 am, with light and variable winds, temperatures ranged from a low of 27° in several locations across northern Maine to a high of 39° in Whitefield New Hampshire. A weak area of low pressure passing south of the region today will bring occasional rain and drizzle to southern New Hampshire and southern Maine, with a mix of rain and snow across the north and mountains. Snow accumulations of 1 to 3" are expected across northern Maine, but generally an inch or less across the higher terrain elsewhere. Highs today will range from the lower 30s across the rooftop of Maine to the mid 40s across southern New Hampshire. As the low pressure system exits tonight, the rain may mix with snow in most places, with mainly snow across the mountains and northern Maine. Portions of northernmost Maine may see a total of 3 to 6" of snow into Tuesday morning. Lows tonight will range from the lower 20s north to the lower 30s south. After any morning rain or snow ends, expect mostly cloudy skies across northern New England Tuesday. High pressure over the Maritimes will turn the winds to the east, keeping chilly condition across the region. Highs Tuesday will range from the lower 30s across northern Maine to the lower to mid 40s across southern New Hampshire. As low pressure over the Great Lakes approaches Tuesday night, expect precipitation to once again overspread the region. With the high pressure system over the Maritimes supplying cold air, the precipitation may take the form of snow, rain and freezing rain with lows near the freezing mark. The precipitation will continue Wednesday as low pressure forms over southern New England and moves northeast. Across the mountains and northern Maine, the mix will change to snow and some snow accumulation is possible. Elsewhere, a mix should change to rain as highs reach into the 30s with a brisk east to northeast wind. As the low crosses the Gulf of Maine Wednesday night, all areas will likely see some snow, with a chance of significant accumulations across the mountains and northern Maine. As the low pulls away Thursday, the rain and snow will taper to showers. Expect brisk west winds, as temperatures struggle to get back into the 3os and 40s. The low will hang around the Maritimes through the end of the week, continuing the damp and cold weather through friday === The weather observed at WHITEFIELD, NH at 08:52 AM EST was: === The skies were cloudy. The prevailing visibility was 10 miles. Temperature: 39F ( 4C) Dewpoint: 30F ( -1C) Relative Humidity: 70% Winds from the S (170 degs) at 20 mph. Pressure: 1015.3 millibars. Altimeter:29.96 inches of mercury. === The weather observed at MOUNT WASHINGTON, NH at 08:59 AM EST was: === The weather reported was light snow and fog. The skies were unobserved. The prevailing visibility was 0 miles. Temperature: 23F ( -5C) Dewpoint: 23F ( -5C) Relative Humidity: 100% Winds from the S (180 degs) at 13 mph. === MPV Terminal Aerodrome Forecast issued 2-Apr-2007 07:28 EDT === 8am: 17005kt P6sm Sct008 Ovc015; Tempo 9-12pm: 4sm -shra Bkn008 Ovc015 12pm: 16010kt P6sm Sct006 Ovc015; Tempo 12-4pm: 4sm -shra Br Ovc006 4pm: 16010kt P6sm Sct006 Ovc015; Tempo 4-8pm: 5sm -shra Br Bkn006 8pm: 18004kt P6sm Sct006 Ovc012 0am: Vrb03kt 3sm Br Sct006 Ovc012