Station Overview Station Location
Station Number MA-MD-25 Latitude 42.56114
Station Name Ayer 0.1 SW Longitude -71.58689
County Middlesex Elevation (ft) 270



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 13 4.25 1.18 18 1.16 15 0.02 3 1 6 2 0.0 0 0
Nov 13 4.11 1.64 16 1.27 10 0.37 6 2 5 1 0.0 0 0
Dec 13 3.95 3.35 8 2.10 3 1.25 5 2 3 0 6.1 1 1
Jan 14 3.49 2.20 13 2.20 13 0.00 0 0 5 3 5.1 1 0
Feb 14 3.28 0.00 2 0.00 2 0.00 0 0 0 0 0.0 0 0
March 14 4.20 4.20 7 0.55 4 3.65 3 1 1 0 0.0 0 0
April 14 4.14 1.74 15 1.21 13 0.53 2 1 6 1 0.0 0 0
May 14 3.94 3.41 17 2.32 12 1.09 5 2 8 0 0.0 0 0
June 14 4.23 1.48 16 0.81 12 0.67 4 1 4 0 0.0 0 0
July 14 3.76 5.72 19 5.72 19 0.00 0 0 11 1 0.0 0 0
Aug 14 3.78 2.33 13 2.33 13 0.00 0 0 6 1 0.0 0 0
Sept 14 3.66 1.99 9 1.99 9 0.00 0 0 6 1 0.0 0 0
Water Year Totals: 46.79" 29.24" 153 days 21.66" 125 7.58" 28 days 10 61 days 10 days 11.2" 2 days 1 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2013 0.00
10/2/2013
10/3/2013 0.00
10/4/2013 0.00
10/5/2013 0.35
10/6/2013 0.18
10/7/2013 0.25
10/8/2013 0.32
10/9/2013 **
10/10/2013 0.02
10/11/2013 0.00
10/12/2013 0.00
10/13/2013 0.01
10/14/2013
10/15/2013 T
10/16/2013 0.00
10/17/2013
10/18/2013 0.05
10/19/2013
10/20/2013
10/21/2013
10/22/2013 T
10/23/2013
10/24/2013
10/25/2013
10/26/2013
10/27/2013
10/28/2013
10/29/2013
10/30/2013 0.00
10/31/2013 **
11/1/2013 0.29
11/2/2013 0.02
11/3/2013
11/4/2013 T
11/5/2013 0.00
11/6/2013
11/7/2013 0.00
11/8/2013 0.04
11/9/2013
11/10/2013
11/11/2013
11/12/2013
11/13/2013 0.00
11/14/2013
11/15/2013
11/16/2013
11/17/2013
11/18/2013 0.14
11/19/2013
11/20/2013
11/21/2013 0.00
11/22/2013 0.02
11/23/2013 **
11/24/2013 0.08
11/25/2013
11/26/2013
11/27/2013 1.05
11/28/2013 **
11/29/2013 **
11/30/2013 **
12/1/2013 **
12/2/2013 0.78
12/3/2013
12/4/2013
12/5/2013 **
12/6/2013 **
12/7/2013 0.47
12/8/2013
12/9/2013 0.42
12/10/2013
12/11/2013
12/12/2013
12/13/2013
12/14/2013
12/15/2013
12/16/2013
12/17/2013
12/18/2013 0.49
12/19/2013
12/20/2013
12/21/2013
12/22/2013
12/23/2013
12/24/2013
12/25/2013
12/26/2013
12/27/2013
12/28/2013
12/29/2013
12/30/2013 1.19
12/31/2013
Day of YearDaily PrcpMultiday Prcp
1/1/2014
1/2/2014
1/3/2014 0.57
1/4/2014
1/5/2014
1/6/2014 0.32
1/7/2014 0.37
1/8/2014
1/9/2014
1/10/2014 T
1/11/2014
1/12/2014 0.34
1/13/2014
1/14/2014
1/15/2014 0.60
1/16/2014 0.00
1/17/2014 T
1/18/2014
1/19/2014
1/20/2014
1/21/2014 0.00
1/22/2014
1/23/2014
1/24/2014
1/25/2014
1/26/2014 T
1/27/2014 0.00
1/28/2014 0.00
1/29/2014
1/30/2014 0.00
1/31/2014
2/1/2014 0.00
2/2/2014 0.00
2/3/2014
2/4/2014
2/5/2014
2/6/2014
2/7/2014
2/8/2014
2/9/2014
2/10/2014
2/11/2014
2/12/2014
2/13/2014
2/14/2014
2/15/2014
2/16/2014
2/17/2014
2/18/2014
2/19/2014
2/20/2014
2/21/2014
2/22/2014
2/23/2014
2/24/2014
2/25/2014
2/26/2014
2/27/2014
2/28/2014
3/1/2014
3/2/2014
3/3/2014
3/4/2014
3/5/2014
3/6/2014
3/7/2014
3/8/2014
3/9/2014
3/10/2014
3/11/2014
3/12/2014
3/13/2014
3/14/2014
3/15/2014
3/16/2014
3/17/2014
3/18/2014
3/19/2014
3/20/2014 0.55
3/21/2014
3/22/2014
3/23/2014
3/24/2014
3/25/2014
3/26/2014 0.00
3/27/2014 0.00
3/28/2014 0.00
3/29/2014 **
3/30/2014 **
3/31/2014 3.65
Day of YearDaily PrcpMultiday Prcp
4/1/2014
4/2/2014
4/3/2014
4/4/2014
4/5/2014 0.30
4/6/2014 0.00
4/7/2014 0.00
4/8/2014 0.38
4/9/2014
4/10/2014
4/11/2014
4/12/2014 0.12
4/13/2014 0.00
4/14/2014
4/15/2014
4/16/2014
4/17/2014
4/18/2014
4/19/2014 0.00
4/20/2014 0.00
4/21/2014
4/22/2014 0.00
4/23/2014 T
4/24/2014 0.31
4/25/2014
4/26/2014 **
4/27/2014 0.53
4/28/2014
4/29/2014 0.01
4/30/2014 0.09
5/1/2014 1.21
5/2/2014 0.19
5/3/2014
5/4/2014
5/5/2014
5/6/2014 0.00
5/7/2014
5/8/2014
5/9/2014
5/10/2014 0.04
5/11/2014 0.10
5/12/2014
5/13/2014
5/14/2014
5/15/2014
5/16/2014 0.00
5/17/2014 0.46
5/18/2014 0.00
5/19/2014 0.00
5/20/2014
5/21/2014
5/22/2014
5/23/2014 0.22
5/24/2014 **
5/25/2014 **
5/26/2014 0.56
5/27/2014 **
5/28/2014 0.53
5/29/2014 0.03
5/30/2014
5/31/2014 0.07
6/1/2014
6/2/2014
6/3/2014
6/4/2014 0.16
6/5/2014
6/6/2014
6/7/2014
6/8/2014
6/9/2014
6/10/2014
6/11/2014 **
6/12/2014 **
6/13/2014 **
6/14/2014 0.67
6/15/2014
6/16/2014
6/17/2014 0.00
6/18/2014 0.06
6/19/2014
6/20/2014 0.00
6/21/2014 0.00
6/22/2014 0.00
6/23/2014 0.00
6/24/2014 0.00
6/25/2014
6/26/2014 0.46
6/27/2014 0.13
6/28/2014
6/29/2014 0.00
6/30/2014 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2014 0.00
7/2/2014 0.00
7/3/2014 0.11
7/4/2014 0.92
7/5/2014 0.99
7/6/2014 0.00
7/7/2014 0.00
7/8/2014 1.48
7/9/2014 0.00
7/10/2014 0.41
7/11/2014
7/12/2014
7/13/2014
7/14/2014 0.07
7/15/2014 T
7/16/2014 0.56
7/17/2014 0.10
7/18/2014
7/19/2014
7/20/2014
7/21/2014
7/22/2014
7/23/2014
7/24/2014 0.14
7/25/2014 0.00
7/26/2014
7/27/2014
7/28/2014 0.26
7/29/2014 0.68
7/30/2014 0.00
7/31/2014
8/1/2014
8/2/2014
8/3/2014
8/4/2014
8/5/2014
8/6/2014
8/7/2014
8/8/2014 0.16
8/9/2014
8/10/2014 0.00
8/11/2014 0.00
8/12/2014 0.00
8/13/2014 0.43
8/14/2014 1.43
8/15/2014 0.06
8/16/2014 T
8/17/2014 0.00
8/18/2014 0.00
8/19/2014
8/20/2014
8/21/2014
8/22/2014 0.22
8/23/2014 0.03
8/24/2014
8/25/2014
8/26/2014
8/27/2014
8/28/2014
8/29/2014
8/30/2014
8/31/2014 0.00
9/1/2014 0.27
9/2/2014
9/3/2014 0.04
9/4/2014
9/5/2014
9/6/2014
9/7/2014 0.77
9/8/2014
9/9/2014
9/10/2014
9/11/2014
9/12/2014
9/13/2014 0.00
9/14/2014 0.22
9/15/2014
9/16/2014
9/17/2014 0.06
9/18/2014 0.00
9/19/2014
9/20/2014
9/21/2014
9/22/2014 0.63
9/23/2014
9/24/2014
9/25/2014
9/26/2014
9/27/2014
9/28/2014
9/29/2014
9/30/2014 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2013 7:00 AM 0.00 0.0 M M M
10/3/2013 7:00 AM 0.00 0.0 M M M
10/4/2013 7:00 AM 0.00 0.0 M M M
10/5/2013 7:00 AM 0.35 M M M M
10/6/2013 8:45 AM 0.18 M M M M
10/7/2013 1:15 PM 0.25 M M M M
10/8/2013 7:30 AM 0.32 M M M M
10/11/2013 7:00 AM 0.00 0.0 M M M
10/12/2013 7:55 AM 0.00 0.0 M M M
10/13/2013 9:00 AM 0.01 M M M M
10/15/2013 7:00 AM T M M M M
10/16/2013 7:00 AM 0.00 0.0 M M M
10/18/2013 7:00 AM 0.05 M M M M
10/22/2013 7:45 AM T M M M M
10/30/2013 7:00 AM 0.00 0.0 M M M
11/2/2013 4:00 PM 0.02 M M M M
11/4/2013 7:40 AM T M M M M
11/5/2013 7:00 AM 0.00 0.0 M M M
11/7/2013 7:00 AM 0.00 0.0 M M M
11/8/2013 7:00 AM 0.04 M M M M
11/13/2013 8:00 AM 0.00 0.0 M M M
11/18/2013 8:40 AM 0.14 M M M M
11/21/2013 7:00 AM 0.00 0.0 M M M
11/22/2013 7:45 AM 0.02 M M M M
11/27/2013 8:05 AM 1.05 M M M M
12/9/2013 4:00 PM 0.42 M M M M
12/18/2013 7:30 AM 0.49 6.1 M 13.4 M
12/30/2013 7:00 AM 1.19 M M M M
1/3/2014 7:20 AM 0.57 5.1 M M M
1/6/2014 8:40 AM 0.32 M M M M
1/7/2014 8:30 AM 0.37 M M M M
1/10/2014 7:00 AM T M M M M
1/12/2014 10:00 AM 0.34 M M M M
1/15/2014 7:40 AM 0.60 M M M M
1/16/2014 7:00 AM 0.00 0.0 M M M
1/17/2014 7:00 AM T M M M M
1/21/2014 7:00 AM 0.00 0.0 M M M
1/26/2014 7:00 AM T 0.0 M M M
1/27/2014 7:00 AM 0.00 0.0 M M M
1/28/2014 7:00 AM 0.00 0.0 M M M
1/30/2014 7:00 AM 0.00 0.0 M M M
2/1/2014 7:00 AM 0.00 0.0 M M M
2/2/2014 7:00 AM 0.00 0.0 M M M
3/20/2014 5:10 PM 0.55 M M M M
3/26/2014 7:00 AM 0.00 0.0 M M M
3/27/2014 7:00 AM 0.00 0.0 M M M
3/28/2014 7:00 AM 0.00 0.0 M M M
4/5/2014 9:45 AM 0.30 M M M M
4/6/2014 7:00 AM 0.00 0.0 M M M
4/7/2014 7:00 AM 0.00 0.0 M M M
4/8/2014 7:00 AM 0.38 M M M M
4/12/2014 8:45 AM 0.12 M M M M
4/13/2014 7:00 AM 0.00 0.0 M M M
4/19/2014 7:00 AM 0.00 0.0 M M M
4/20/2014 7:00 AM 0.00 0.0 M M M
4/22/2014 7:00 AM 0.00 0.0 M M M
4/23/2014 9:00 AM T M M M M
4/24/2014 8:20 AM 0.31 M M M M
4/29/2014 7:00 AM 0.01 M M M M
4/30/2014 8:00 AM 0.09 M M M M
5/1/2014 7:30 AM 1.21 M M M M
5/2/2014 7:00 AM 0.19 M M M M
5/6/2014 7:00 AM 0.00 0.0 M M M
5/10/2014 11:00 AM 0.04 M M M M
5/11/2014 9:30 AM 0.10 M M M M
5/16/2014 7:00 AM 0.00 0.0 M M M
5/17/2014 7:30 AM 0.46 M M M M
5/18/2014 7:00 AM 0.00 0.0 M M M
5/19/2014 7:00 AM 0.00 0.0 M M M
5/23/2014 10:15 AM 0.22 M M M M
5/29/2014 7:00 AM 0.03 M M M M
5/31/2014 9:30 AM 0.07 M M M M
6/4/2014 6:00 PM 0.16 M M M M
6/17/2014 7:00 AM 0.00 0.0 M M M
6/18/2014 8:00 AM 0.06 M M M M
6/20/2014 7:00 AM 0.00 0.0 M M M
6/21/2014 7:00 AM 0.00 0.0 M M M
6/22/2014 7:00 AM 0.00 0.0 M M M
6/23/2014 7:00 AM 0.00 0.0 M M M
6/24/2014 7:00 AM 0.00 0.0 M M M
6/26/2014 7:30 AM 0.46 M M M M
6/27/2014 8:00 AM 0.13 M M M M
6/29/2014 7:00 AM 0.00 0.0 M M M
6/30/2014 7:00 AM 0.00 0.0 M M M
7/1/2014 8:15 AM 0.00 0.0 M M M
7/2/2014 8:15 AM 0.00 0.0 M M M
7/3/2014 7:00 AM 0.11 M M M M
7/4/2014 9:00 AM 0.92 M M M M
7/5/2014 7:45 AM 0.99 M M M M
7/6/2014 7:00 AM 0.00 0.0 M M M
7/7/2014 7:00 AM 0.00 0.0 M M M
7/8/2014 7:55 AM 1.48 M M M M
7/9/2014 7:00 AM 0.00 0.0 M M M
7/10/2014 7:50 AM 0.41 M M M M
7/14/2014 8:00 AM 0.07 M M M M
7/15/2014 9:00 AM T M M M M
7/16/2014 7:00 AM 0.56 M M M M
7/17/2014 7:40 AM 0.10 M M M M
7/24/2014 8:00 AM 0.14 M M M M
7/25/2014 7:00 AM 0.00 0.0 M M M
7/28/2014 7:50 AM 0.26 M M M M
7/29/2014 7:45 AM 0.68 M M M M
7/30/2014 7:00 AM 0.00 0.0 M M M
8/8/2014 7:00 AM 0.16 M M M M
8/10/2014 7:00 AM 0.00 0.0 M M M
8/11/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/12/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/13/2014 7:00 AM 0.43 M M M M Sent via CoCoRaHS Observer for iOS
8/14/2014 8:55 AM 1.43 M M M M Sent via CoCoRaHS Observer for iOS
8/15/2014 7:50 AM 0.06 M M M M Sent via CoCoRaHS Observer for iOS
8/16/2014 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
8/17/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/18/2014 9:45 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/22/2014 7:50 AM 0.22 M M M M Sent via CoCoRaHS Observer for iOS
8/23/2014 11:45 AM 0.03 M M M M Sent via CoCoRaHS Observer for iOS
8/31/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/1/2014 8:15 AM 0.27 M M M M Sent via CoCoRaHS Observer for iOS
9/3/2014 7:00 AM 0.04 M M M M Sent via CoCoRaHS Observer for iOS
9/7/2014 7:00 AM 0.77 M M M M Sent via CoCoRaHS Observer for iOS
9/13/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/14/2014 7:00 AM 0.22 M M M M Sent via CoCoRaHS Observer for iOS
9/17/2014 7:00 AM 0.06 M M M M Sent via CoCoRaHS Observer for iOS
9/18/2014 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/22/2014 7:00 AM 0.63 M M M M Sent via CoCoRaHS Observer for iOS
9/30/2014 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/9/2013 10/10/2013 7:50 AM 2 0.02 M M
10/31/2013 11/01/2013 3:40 PM 2 0.29 M M
11/23/2013 11/24/2013 9:30 AM 2 0.08 M M
11/28/2013 12/02/2013 9:15 AM 5 0.78 M M
12/5/2013 12/07/2013 8:00 AM 3 0.47 0.4 M
3/29/2014 3/31/2014 3:50 PM 3 3.65 M M
4/26/2014 4/27/2014 3:35 PM 2 0.53 M M
5/24/2014 5/26/2014 8:00 PM 3 0.56 M M
5/27/2014 5/28/2014 8:00 AM 2 0.53 M M
6/11/2014 6/14/2014 9:30 AM 4 0.67 M M



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground
5/25/2014 7:20 PM 3/8" 1/4" Pea Size Rice Hard|White Ice 9 2min minor leaf damage Continuous False After rain After smaller hail