|
|
|
|
|
|
|
> 0.6" RADAR ESTIMATE
OR 0.5" GAUGED IN FORECAST AREA
|
|
Event
|
Date
|
Max ALERT
|
Max CoCoRaHS
|
QPE STP
|
Note
|
ADAM
|
ARAP
|
AURA
|
BLDR
|
BROM
|
DENV
|
DOUG
|
JEFF
|
|
1
|
24-Apr
|
3.43
|
2.75
|
>
3.0
|
QPE
from NWS, early season general rain and snow event
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
2
|
1-May
|
0.51
|
1.28
|
|
No
QPE
|
|
|
|
|
|
X
|
X
|
X
|
|
3
|
14-May
|
1.65
|
1.66
|
>
1.5
|
QPE
from NWS, drowning in Lakewood Gulch
|
X
|
X
|
X
|
|
|
X
|
X
|
X
|
|
4
|
17-May
|
0.39
|
0.45
|
|
No
QPE, limited activity in SW portion of forecast area
|
|
|
|
|
|
|
|
|
|
5
|
29-May
|
2.17
|
1.75
|
>
3.0
|
QPE
from NWS, three lines of storms, one north, one central, one south (>
3" cell)
|
X
|
|
|
X
|
|
X
|
X
|
X
|
|
6
|
3-Jun
|
0.12
|
0.21
|
>
1.0
|
QPE
from NWS, some activity along southern Douglas/Elbert county line and
northcentral Adams
|
X
|
|
|
|
|
|
X
|
|
|
7
|
12-Jun
|
1.1
|
1.91
|
>
3.0
|
>
3" cell along Douglas/Elbert county line near Franktown
|
X
|
X
|
X
|
X
|
|
X
|
X
|
X
|
|
8
|
26-Jun
|
0.08
|
0.3
|
>
0.3
|
QPE
from NWS, activity west and south of forecast area
|
|
|
|
|
|
|
|
|
|
9
|
27-Jun
|
0.04
|
0.04
|
|
QPE
from NWS, intense activity just south of the forecast area
|
|
|
|
|
|
|
|
|
|
10
|
28-Jun
|
0.35
|
0.29
|
>
1.5
|
QPE
from NWS, > 1.5" cell in northern Adams
|
X
|
|
|
|
|
|
|
|
|
11
|
3-Jul
|
0.43
|
0.44
|
>
1.75
|
QPE
overestimates from 1"-2" hail in Larimer, Boulder, Gilpin, Clear
Creek and Jefferson Counties
|
|
|
|
X
|
|
|
|
X
|
|
12
|
4-Jul
|
0.94
|
1.41
|
>
1.25
|
Mostly
a Denver storm
|
X
|
X
|
|
|
|
X
|
|
X
|
|
13
|
8-Jul
|
0.47
|
0.52
|
>
1.75
|
>
1.5" cells in Arapahoe, Adams, Jefferson
|
X
|
X
|
|
X
|
|
X
|
X
|
X
|
|
14
|
10-Jul
|
0.98
|
1.06
|
>
2.0
|
>
1.25" cells in Boulder, Jefferson, Elbert
|
|
|
|
X
|
X
|
|
X
|
X
|
|
15
|
11-Jul
|
0.24
|
0.43
|
>
3.0
|
QPE
from NWS, intense activity in SE corner of forecast area
|
|
|
|
|
|
|
X
|
|
|
16
|
12-Jul
|
0.71
|
0.99
|
>
3.0
|
QPE
from NWS
|
|
X
|
|
|
|
|
X
|
X
|
|
17
|
19-Jul
|
0.94
|
1.75
|
>
2.5
|
>
2" cell in Jefferson, > 1.25" cells in Arapahoe, Douglas
|
X
|
X
|
X
|
|
|
X
|
X
|
X
|
|
18
|
21-Jul
|
1.93
|
1.77
|
>
2.5
|
>
1.75" cells in Douglas, Arapahoe
|
X
|
X
|
X
|
|
|
|
X
|
|
|
19
|
25-Jul
|
0.71
|
1.19
|
>
3.0
|
QPE
from NWS, > 3" cell in Douglas; > 1.5" cells in Jefferson,
Adams
|
X
|
X
|
X
|
X
|
X
|
|
X
|
X
|
|
20
|
26-Jul
|
1.6
|
1.18
|
>
2.0
|
Heaviest
rainfall, above 1.5" in Boulder, Jefferson, Douglas foothills
|
|
X
|
X
|
X
|
|
|
X
|
X
|
|
21
|
27-Jul
|
1.81
|
3.02
|
>
3.0
|
>
3" cell in Elbert; > 2" cell at corner of Arapahoe, Jefferson,
Douglas; other hotspots around 2"
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
22
|
28-Jul
|
0.67
|
1.1
|
>
3.0
|
>
3" cell in Douglas
|
X
|
|
|
|
|
|
X
|
|
|
23
|
29-Jul
|
0.87
|
0.82
|
>
2.0
|
Some
small cells > 1.25 in Elbert, Arapahoe, Jefferson
|
|
|
X
|
X
|
|
|
X
|
X
|
|
24
|
30-Jul
|
0.98
|
1.56
|
>
2.5
|
>2.5"
cells in Douglas, Elbert; > 1.5" cells in Arapahoe and Adams
|
X
|
X
|
X
|
X
|
|
X
|
X
|
X
|
|
25
|
1-Aug
|
0.67
|
0.89
|
>
1.0
|
|
|
X
|
X
|
|
|
X
|
X
|
X
|
|
26
|
2-Aug
|
1.26
|
0.85
|
>
3.0
|
6.37"
CoCoRaHS observation 10 miles north of the District in Weld County,
4.02" in NE Park County
|
X
|
X
|
X
|
X
|
|
X
|
X
|
X
|
|
27
|
3-Aug
|
0.87
|
0.99
|
>
3.0
|
QPE
overestimates in Douglas possibly due to hail contamination
|
X
|
|
|
|
|
X
|
X
|
X
|
|
28
|
4-Aug
|
1.22
|
2.37
|
>
1.75
|
>
1.75" cell in Jefferson
|
X
|
|
|
X
|
X
|
X
|
X
|
X
|
|
29
|
5-Aug
|
2.17
|
2.06
|
>
3.0
|
>
3" cell in Elbert, > 2.5" cells in Douglas, Arapahoe
|
X
|
X
|
X
|
|
|
X
|
X
|
X
|
|
30
|
6-Aug
|
0.98
|
0.85
|
>
2.0
|
>
2" cells in Douglas, Elbert; > 1.25" in Jefferson
|
|
X
|
X
|
|
|
|
X
|
X
|
|
31
|
7-Aug
|
0.63
|
0.33
|
>
1.75
|
>
1.5" cells in Douglas, Elbert
|
X
|
|
|
X
|
|
X
|
X
|
|
|
32
|
10-Aug
|
0.55
|
0.69
|
>
2.0
|
>
1.5" cells in Jefferson, Arapahoe; > 1.25" cells in Denver,
Adams
|
X
|
X
|
X
|
X
|
|
X
|
X
|
X
|
|
33
|
14-Aug
|
1.26
|
1.54
|
>
3.0
|
>
3" cell in Douglas; > 1.5" cells in Boulder, Arapahoe
|
X
|
X
|
|
X
|
|
X
|
X
|
|
|
34
|
15-Aug
|
1.3
|
1.29
|
>
3.0
|
>
3" in Elbert County inside forecast area; > 1.5" cells in
Douglas, Jefferson and Boulder
|
X
|
|
|
X
|
X
|
|
X
|
X
|
|
35
|
17-Aug
|
0.67
|
1.94
|
>
3.0
|
Most
activity near and in foothills, > 3" along Douglas/Elbert county
line near Franktown
|
|
X
|
X
|
X
|
|
|
X
|
X
|
|
36
|
18-Aug
|
0.63
|
0.92
|
>
1.25
|
Activity
in foothills and mountains
|
|
|
|
X
|
|
|
X
|
X
|
|
37
|
23-Aug
|
|
|
|
Called
off messages too early, storms hit in late evening into the 24th
|
|
|
|
X
|
|
|
|
|
|
38
|
24-Aug
|
1.57
|
1.45
|
>
2.0
|
Blue
Mtn repeater hit by lightning at 0100, intense late night/early morning
storm across District
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
X
|
|
39
|
28-Aug
|
0.2
|
0.46
|
>
1.25
|
Activity
on south end of Parker and eastern edge of District in Adams
|
X
|
|
|
|
|
|
|
X
|
|
40
|
29-Aug
|
0.51
|
0.99
|
>
0.8
|
Lots
of activity in the foothills and mountains, small intense cell in
Adams. 2.6" gauged in Hayman.
|
X
|
|
|
X
|
|
|
|
X
|
|
41
|
31-Aug
|
0.83
|
0.76
|
>
1.5
|
Small
intense cell (>1.5") at the corner of Broomfield, Adams and Weld
County; > 1.0" cell in Denver
|
X
|
|
|
X
|
X
|
X
|
|
|
|
42
|
5-Sep
|
0.83
|
0.98
|
>
2.0
|
>
1" cells in Jefferson and Douglas
|
X
|
X
|
X
|
X
|
|
|
X
|
X
|
|
|
|
Maximum
24-hour value
|
Maximum
24-hour value
|
Radar
estimated 24-hour precip
|
|
|
|
|
|
|
|
|
|
