Winter Weather Outlook: Preliminary second snowfall forecast

A Quick Guide to the Percentages

Storm Forecast Verification (with 24hr lead)

2008-09 Snow Report


10/28/2008	T		OCT: T
11/18/2008	T
11/22/2008	T
11/24/2008	0.1
11/28/2008	0.1
11/30/2008	1.2		NOV: 1.4
12/07/2008	0.5
12/09/2008	1.4
12/12/2008	1.0	E,C,C
12/13/2008	T
12/17/2008	3.6	C
12/19/2008	8.6	C
12/20/2008	2.5
12/21/2008	7.4	D
12/31/2008	8.7		DEC: 33.7
01/05/2008	T	D
01/07/2009	3.5	C
01/08/2009	3.8
01/11/2009	7.8
01/18/2009	5.0
01/19/2009	2.0
01/28/2009	9.1	C	JAN: 31.2
02/13/2009	T
02/19/2009	4.8
02/20/2009	1.0
02/22/2009	6.2		FEB: 12.0
03/02/2009	4.5	C
03/09/2009	6.3		MAR: 10.8

-----------------------------------------
Total so far	89.2
(Highest snowdepth recorded so far: 24)

2007-08 Snow Report


11/16/2007	T
11/20/2007	2.2
11/26/2007	T		NOV: 2.2
12/01/2007	0.1
12/03/2007	7.0	C
12/07/2007	T
12/10/2007	1.0	D
12/13/2007	7.6
12/16/2007	10.1	D
12/20/2007	3.3	D	
12/27/2007	1.2		
12/31/2007	9.4		DEC: 39.7
01/01/2008	5.5
01/11/2008	T	D
01/14/2008	5.1	C
01/18/2008	3.3	C
01/21/2008	0.5		
01/23/2008	0.1		
01/27/2008	1.5		JAN: 16.0
02/01/2008	2.5	E	
02/05/2008	1.0	D	
02/07/2008	2.5	D	
02/10/2008	5.0		
02/13/2008	8.2	C	
02/18/2008	T	D
02/19/2008	T
02/22/2008	4.5
02/26/2008	9.6
02/27/2008	0.3		FEB: 33.4
03/01/2008	4.7
03/09/2008	T
03/12/2008	0.5
03/15/2008	1.5
03/19/2008	0.6
03/28/2008	5.4	C
03/31/2008	1.0		MAR: 13.7
04/04/2008	1.2		APR: 1.2

-----------------------------------------
Total		106.4
(Seasonal average reached on 2/13/08)
(Highest snowdepth recorded: 28)

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Updated at 10:55EDT 4/15

Short term Winter threat Fri-Sun 4/16-18 40% chance of a winter event 10% chance of a severe winter event	Long term Winter threat None 0% chance of a winter event 0% chance of a severe winter event
Snowday probabilities1 Friday 4/16 20% chance of a delay 0% chance of an early dismissal 0% chance of a cancellation	Snowday probabilities2 None 0% chance of a delay 0% chance of an early dismissal 0% chance of a cancellation

Snowday probabilities are made by Sam Lillo, for SAU29 in Keene. These percentages should not be relied on outside of Cheshire County, NH. In addition, in Cheshire County, please do all school work on time depsite the issued forecast.

Preliminary second snowfall forecast

Posted: 11/30/2007 06:28:00 AM

I have to make this quick, since Im heading off to school right now, but I'll update during my campus period. In summary, models have started to do more than "slightly" trend south and east. At this point, NWS AFD says axis of heavy snowfall lies over central NH. Just a few more miles south and we could be in for over a foot of snow. NWS zone forecast has added "heavy snow accumulations possible" Sunday Night and now have all snow for Monday. Im still hesitant to go gung ho with accumulations but did raise them up a little. For what its worth, 06z GFS and NAM both cream southern and central NH including potential blizzard conditions to our east. Still have two days for changes in either direction. So best bet is to remain conservative. Winter storm watches have been issued for a large portion of the midwest and into Pennsylvania. We will not be far behind.

Preliminary second snowfall forecast for 12z Sunday through 12z Tuesday: 6 to 12 inches.
Preliminary second ice accumulation forecast for 12z Sunday through 12z Tuesday: .1 to .25 inches.

|posted by Sam Lillo @ 11/30/2007 06:28:00 AM

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(c) 2005-10, Sam Lillo. The forecasts made on this site are unofficial and should not be relied on in life-threatening situations. For official forecasts, consult the National Weather Service.