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W1GMF > WX 26.06.08 21:00l 60 Lines 2429 Bytes #999 (0) @ WW
BID : 33108_W1GMF
Read: GUEST
Subj: MT WASHINGTON 0621
Path: IZ3LSV<IW2OHX<OE7XLR<DB0PV<DB0MRW<OK0PPL<DB0RES<WA7V<VK7AX<VK2TGB<
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Sent: 080621/0955Z @:W1GMF.#EMA.MA.USA.NOAM #:33108 [ABINGTON, MA] FBB7.00e
From: W1GMF@W1GMF.#EMA.MA.USA.NOAM
To : WX@NEBBS
MT WASHINGTON WEATHER CONDITIONS
Saturday, June 21, 2008
4:33 AM
Advisory: Severe Thunderstorms possible the next 36 hours...small hail, gusty winds, heavy rain...
Conditions at 4:33 AM
Weather: Fog
Temperature: 38°F
Wind: W 28 mph
Visibility: 1/16 mph
Relative Humidity: 100%
Station Pressue: 23.84" steady
Ground Conditions: Wet rocks and trail runoff
24 Hour Statistics
Maximum Temperature: 50°F
Minimum Temperature: 36°F
Peak Wind Gust: W 39 mph
Average Wind Speed: 19.2 mph
Liquid Precipitation: 0.20"
Snowfall: Trace
Almanac Data
Record High: 68°F (1938)
Record Low: 22°F (1940)
Average Daily Temperature: 46°F
Average Monthly Melted Precipitation: 8.36
Average Monthly Snowfall: 1.10
Total Snowfall So Far This Month: 0.3"
Average Monthly Winds: 27.4
Sunrise: 4:55
Sunset: 8:38
Forecast Discussion
Low pressure that has lingered for the past week will retrograde a bit as high pressure builds in briefly from the east. This will allow for a bit of clearing but instability on the outer edges of the retreating low will continue the chance of afternoon showers. Instability will be caused by a mid level shortwave as well as daytime heating and slight shear. Lifting looks lower than past days but ample low level moisture will aid in a bit of convection. Models are placing activity just to our east along the NH and ME boarder but the onshore push of cooler coastal air will determine where the shower line blooms. With the White Mountains looking like a natural dividing line, suspect the showers will occur around and possibly on us. So expect plenty of clouds above with a chance of something wet or thunderous. Overnight, any building showers will taper out as heating is cut off but clouds above will increase as the western low approaches once again. A weak warm front will bring a chance of showers early but by the afternoon, showers and thunderstorms will return. If enough sunshine lasts in the morning, the atmosphere will become unstable and primed for possibly some strong convection development as the warm front passes focusing lifting. Some moderate shear could allow for severe thunderstorms to pop up. The warmer, moist air from the south will also prime conditions. As has been the case the past week, any thunderstorms over the next 36 hours may produce highs winds, heavy rain, and small hail.
Ryan Knapp
Staff Meteorologist
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