Storm System Brings Beneficial Rain to Northeastern Colorado

On Thursday August 14th, a strong upper level low pressure system over southern Saskatchewan, Canada began moving southwestward into the northern Rocky Mountain States. Ahead of this system, a weak cold front moved into northeastern Colorado producing weak upslope flow and cooler temperatures. Increased instability and moisture associated with the new airmass resulted in a round of severe weather across northeastern Colorado during the afternoon and evening.  The following are severe weather reports for that day:

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
802 PM MDT THU AUG 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0731 PM     HAIL             CASTLE ROCK             39.38N 104.85W
08/14/2008  M0.75 INCH       DOUGLAS            CO   TRAINED SPOTTER

0727 PM     HAIL             12 SSW KARVAL           38.57N 103.61W
08/14/2008  M0.75 INCH       LINCOLN            CO   TRAINED SPOTTER

0657 PM     HAIL             SIMLA                   39.14N 104.08W
08/14/2008  M1.50 INCH       ELBERT             CO   TRAINED SPOTTER

0652 PM     HAIL             20 SW KARVAL            38.53N 103.79W
08/14/2008  M1.00 INCH       LINCOLN            CO   TRAINED SPOTTER

0609 PM     HAIL             LIMON                   39.27N 103.69W
08/14/2008  M1.00 INCH       LINCOLN            CO   TRAINED SPOTTER

0555 PM     HAIL             3 S GENOA               39.24N 103.50W
08/14/2008  M1.00 INCH       LINCOLN            CO   TRAINED SPOTTER

0453 PM     HAIL             5 ENE FORT COLLINS      40.58N 104.98W
08/14/2008  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0450 PM     HAIL             4 E FORT COLLINS        40.56N 104.99W
08/14/2008  M0.75 INCH       LARIMER            CO   TRAINED SPOTTER

0448 PM     TSTM WND GST     3 N FORT COLLINS        40.60N 105.07W
08/14/2008  M65.00 MPH       LARIMER            CO   TRAINED SPOTTER

0438 PM     HAIL             WELLINGTON              40.70N 105.00W
08/14/2008  M0.75 INCH       LARIMER            CO   TRAINED SPOTTER

0438 PM     HAIL             4 NNE TIMNATH           40.58N 104.95W
08/14/2008  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0435 PM     HAIL             4 N FORT COLLINS        40.61N 105.07W
08/14/2008  M1.75 INCH       LARIMER            CO   AMATEUR RADIO

0435 PM     HAIL             1 N FORT COLLINS        40.57N 105.07W
08/14/2008  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0430 PM     HAIL             2 SSE FORT COLLINS      40.53N 105.05W
08/14/2008  M0.75 INCH       LARIMER            CO   TRAINED SPOTTER

0429 PM     HAIL             9 WNW BELLVUE           40.68N 105.33W
08/14/2008  M0.75 INCH       LARIMER            CO   TRAINED SPOTTER

0419 PM     HAIL             7 NE FORT LUPTON        40.16N 104.72W
08/14/2008  M0.88 INCH       WELD               CO   TRAINED SPOTTER

0403 PM     HAIL             3 N KUTCH               38.94N 103.87W
08/14/2008  M1.00 INCH       ELBERT             CO   TRAINED SPOTTER


By Friday August 15th, the upper level low had moved over northwestern Colorado. Plentiful moisture and instability associated with this storm system brought much needed rain to northeastern Colorado from early Friday morning through Sunday morning. 

By Sunday August 17th, this deep low pressure system had drifted over central Colorado with scattered showers redevelopiong over eastern Colorado during the morning hours. Precipitation totals during this three day period ending 7 AM Sunday ranged from one to four inches, with the heaviest rainfall along the I-25 corridor. 

 

LOCATION                                       PRECIPITATION  TOTALS

                                                                       (INCHES)

Wellington 3.6 S                                                4.49

Fort Collins 3.9 NNE                                          4.33

Eaton 3.6 WSW                                                 4.24

Greeley 1 ENE                                                   4.20

Eaton 1.1 ENE                                                   4.15

Wellington 1.5 SW                                             4.10

Fort Collins 4.2 NNE                                          3.96

Greeley UNC                                                     3.79

Greeley 2.3 SE                                                  3.78

Buckeye 0.9 S                                                   3.60

Greeley 3.8W                                                     3.50

Chatfield Dam 7.2 SW                                        3.37

Briggsdale                                                          3.34

Littleton 0.9 S                                                     3.33

Ovid 3.7 S                                                          3.32

Denver 5.6 W                                                     3.30

Cherry Creek Reservoir 1.9 N                           3.30

Sterling 15 SE                                                    3.30

Fort Lupton 6.3 WNW                                        3.29

Cherry Hills Village 1.7 WSW                            3.22

Elbert 3.4 ESE                                                   3.21

Gill 2.4 NW                                                         3.21

Englewood 2 SSE                                              3.19

Denver 11.0 SSW                                              3.17

Parker 5.5 SE                                                     3.17

Castle Rock 6.5 SW                                           3.13

Milliken 2.5 NNW                                               3.12

Tinmath 4.1 NNE                                               3.11

Windsor 3.4 SW                                                 3.11

Franktown 3.5 NE                                              3.10

Fort Collins 4.0 S                                               3.10

Morrison 2.9 ESE                                               3.07

Frederick 2.0 NW                                               3.05

Fort Morgan                                                       3.05

Frederick 0.9 SE                                                3.05

Westminster 0.8 ESE                                         3.01

Franktown 3 E                                                    3.00

Golden 2.0 NNW                                                3.00

Ward 4.6 NE                                                       2.99

Longmont 5.1 E                                                  2.97

Milliken 0.8 W                                                     2.97

Conifer 3 E                                                         2.95

Denver 5.7 S                                                      2.94

Highlands Ranch 2.7 SSE                                 2.88

Longmont 2 W                                                    2.88

Johnstown 0.6 NNW                                          2.88

Erie 1.6 NE                                                         2.85

Castle Pines 2.2 NNE                                         2.84

Golden 0.5 nne                                                   2.83

Kassler 1.2 SSW                                                2.82

Broomfield                                                          2.82

Denver 11.4 NNW                                              2.80

Horsetooth Mountain 3.2 NNW                          2.78

Roxborough State Park                                      2.77

Woodrow 4.6 SE                                                2.77

Fleming 18 SW                                                  2.77

Holyoke 4.0 E                                                    2.76

Northglenn                                                         2.75

Denver 6.1 WSW                                               2.72

Boulder 3.5 S                                                     2.70

Morrison 3 SSE                                                  2.70

Wheat Ridge 2.8 WSW                                      2.70

Lafayette 0.8 WSW                                            2.69

Castle Rock 7.3 NNW                                        2.69

Parker 4.5 NE                                                    2.68

Broomfield 5.5 NW                                             2.68

Aurora 2.8 WSW                                                2.67

Northglenn 0.8 WSW                                         2.67

Evergreen 4.2 SSE                                            2.67

Fort Collins CSU                                                2.65

Louisville                                                            2.63

Boulder 6.8 SE                                                   2.62

Castle Rock 1 NE                                               2.60

Sterling 2.6 SSW                                                2.58

Kutch 10 NE                                                       2.57

Superior 2.5 E                                                    2.57

Boulder 2 SW                                                     2.56

Wheatridge 0.3 SE                                             2.55

Arvada 1.3 SW                                                   2.54

Sedalia 2.2 E                                                      2.53

Larkspur 2.0 SW                                                2.52

Nederland 5.8 E                                                 2.50

Loveland 3.4 NNE                                              2.50

Centennial 0.4 N                                                2.49

Lakewood 2.2 ESE                                            2.49

Denver 1 SSW                                                   2.49

Crook                                                                 2.49

Strontia Springs                                                 2.49

Galeton 1.6 E                                                     2.48

Parker                                                                2.47

Lakewood                                                          2.47

Genesee 1 N                                                     2.46

Ralston Reservoir                                              2.46

Thornton 0.9 NE                                                2.45

Kittredge 2.5 SSE                                              2.45

Niwot  0.7 NNW                                                 2.43

Evergreen 4.6 S                                                 2.43

Lone Tree 2.0 Sw                                              2.39

Elizabeth 6.1 N                                                  2.39

Lafayette 2.5 NW                                              2.38

Bellvue 5.6 WNW                                              2.37

Virginia Dale 7 ENE                                           2.37

Jefferson                                                            2.35

Laporte 1.4 NW                                                 2.34

Cherry Hills Village 1.5 ESE                              2.33

Conifer 4 WNW                                                 2.33

Denver Stapleton                                              2.29

Thornton 5.4 NNE                                             2.26

Loveland 2 N                                                     2.25

Lindon                                                               2.24

Genoa                                                               2.20

Masonville 4 S                                                  2.20

Nederland 1 NW                                               2.17

Lyons 1.8 N                                                      2.17

Brush 0.8 S                                                       2.15

Commerce City 2 NE                                        2.13

Lake George 7.2 WNW                                    2.12

Kiowa 12.7 ENE                                               2.11

Hudson 4.8 WSW                                             2.10

Buckley AFB   12 SE                                        2.08

Drake 3.0 NNE                                                 2.05

Shaw 4 ENE                                                     2.04

Evergreen                                                         2.02

Denver International Airport                              2.00

Lochbuie 3.0 N                                                 1.99

Julesburg 0.1 NNW                                          1.96

Rollinsville 0.1 N                                               1.95

Aurora 7 S                                                        1.89

Rollinsville 1 NW                                              1.84

Limon                                                                1.80

Estes Park 1 SSE                                             1.75

Cheesman Reservoir                                        1.74

Breckenridge 3.3 SE                                         1.47

Fraser                                                               1.45

Grand Lake 1 NW                                             1.45

Winter Park                                                       1.28

Byers 2 WSW                                                   1.09

Karval 0.2 NE                                                   1.07



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