Severe Weather Reports For Northeast Colorado July 20th And July 21st

...A wet microburst causes extensive wind damage in Arvada...

Analysis of doppler radar showed a band of continuous wind gusts of 53 mph or
greater on Monday July 20 at 1013pm just northwest of Arvada, and continuing into
northwest Denver  at  1024 pm.  The peak gust of 61 mph was indicated 1 mile
southeast of Arvada at 1015pm.   No rotation was seen on radar, and the wind damage
was associated with a strong wet microburst.   

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PRELIMINARY LOCAL STORM REPORT...CORRECTED AND RETRANSMITTED(2)
NATIONAL WEATHER SERVICE DENVER CO
935 AM MDT THU JUL 23 2009



...SEVERE WEATHER REPORT FOR JULY 21, 2009...
..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0945 PM     HAIL             4 NE LARKSPUR           39.22N 104.84W
07/21/2009 E1.50 INCH DOUGLAS CO PUBLIC

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...SEVERE WEATHER REPORTS FOR JULY 20, 2009...

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

1139 PM     TORNADO          5 S CASTLE ROCK         39.31N 104.85W
07/20/2009                   DOUGLAS            CO   NWS EMPLOYEE

            SAW DEBRIS BUT NO APPARENT DAMAGE

1127 PM     TSTM WND GST     LOCHBUIE                40.01N 104.72W
07/20/2009  E70.00 MPH       WELD               CO   TRAINED SPOTTER

            SHINGLES BLOWING OFF OF ROOF

1120 PM     HEAVY RAIN       2 ENE FORT COLLINS      40.57N 105.04W
07/20/2009  M2.67 INCH       LARIMER            CO   TRAINED SPOTTER

            IN 45 MINUTES

1120 PM     HAIL             6 SW CASTLE ROCK        39.32N 104.93W
07/20/2009  M1.00 INCH       DOUGLAS            CO   TRAINED SPOTTER

1115 PM     TSTM WND GST     FORT LUPTON             40.09N 104.81W
07/20/2009  M58.00 MPH       WELD               CO   TRAINED SPOTTER

            ALSO PENNY SIZED HAIL AND 0.58 INCH RAINFALL IN 5 MINUTES


1112 PM     HAIL             3 SSE LAKEWOOD          39.65N 105.08W
07/20/2009  M1.25 INCH       JEFFERSON          CO   TRAINED SPOTTER

1100 PM     HAIL             WHEAT RIDGE             39.77N 105.10W
07/20/2009  M1.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

            44TH AVE. SIGNIFICANT WIND DAMAGE. 5 12 INCH DIAMETER
            TREES DOWN. HAIL COVERING GROUND. STREET FLOODING UP TO
            WHEEL HEIGHT.

1045 PM     HAIL             6 W LITTLETON           39.59N 105.13W
07/20/2009  M1.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

            SMALL FUNNEL CLOUD LASTED FOR 5 MINUTES. TREE BRANCHES
            DOWN AND POWER OUTAGES.

1038 PM     HAIL             ARVADA                  39.82N 105.11W
07/20/2009  M1.00 INCH       JEFFERSON          CO   NWS EMPLOYEE

1037 PM     HAIL             FORT COLLINS            40.56N 105.07W
07/20/2009  M2.00 INCH       LARIMER            CO   TRAINED SPOTTER

            .60 INCH PRECIPITATION IN 30 MINUTES

1030 PM     TSTM WND DMG     3 N ARVADA              39.86N 105.11W
07/20/2009                   JEFFERSON          CO   TRAINED SPOTTER

            WIND DAMAGE IN A TEN SQUARE BLOCK AREA. TOPS OF SEVERAL
            COTTON WOOD TREES SOME 60 FEET TALL WERE FLATTENED. 5
            INCH DIAMETER TREES WERE SNAPPED. TREES WERE STRIPPED OF
            THEIR LEAVES AND BARK DUE TO STRONG WINDS AND HAIL.

1028 PM     HAIL             6 WSW DENVER            39.69N 105.07W
07/20/2009  M1.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

            DENTED CARS. BROKEN WINDOWS. DAMAGED SHINGLES.

1026 PM     HAIL             NNE LAKEWOOD            39.70N 105.11W
07/20/2009  M0.75 INCH       JEFFERSON          CO   TRAINED SPOTTER

1025 PM     HAIL             BROOMFIELD              39.94N 105.06W
07/20/2009  M0.75 INCH       BROOMFIELD         CO   TRAINED SPOTTER

            0.59 INCH RAINFALL IN 23 MINUTES.

1022 PM     HAIL             ARVADA                  39.82N 105.11W
07/20/2009  M1.00 INCH       JEFFERSON          CO   NWS EMPLOYEE

            ROOF DAMAGE. SKY LIGHTS ON RV BLOWN OUT.

1018 PM     HAIL             N GOLDEN                39.74N 105.21W
07/20/2009  M1.00 INCH       JEFFERSON          CO   NWS EMPLOYEE

1018 PM     HAIL             ARVADA                  39.82N 105.11W
07/20/2009  M1.25 INCH       JEFFERSON          CO   NWS EMPLOYEE

            HAIL COVERING GROUND TO A DEPTH OF TWO INCHES WITH 18
            INCH DRIFTS IN PLACES. LOTS OF TREE DAMAGE. VERY HEAVY
            RAIN.

1017 PM     HAIL             4 N LOVELAND            40.48N 105.07W
07/20/2009  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

            HEAVY RAIN. 0.97 INCH BETWEEN 10 PM AND 11 PM. LATE
            REPORT. RECIEVED 7/21/09.

1016 PM     HAIL             FORT COLLINS            40.56N 105.07W
07/20/2009  M1.75 INCH       LARIMER            CO   TRAINED SPOTTER

1015 PM     TSTM WND DMG     LAKEWOOD                39.70N 105.11W
07/20/2009                   JEFFERSON          CO   TRAINED SPOTTER

            ESTIMATED WIND GUSTS TO 70 MPH. POWER POLES LEANING OVER.
            4 TO 6 INCHES HAIL DEPTH. WINDOWS BLOWN OUT. DAMAGE ALSO
            ARVADA AND WHEAT RIDGE.

1015 PM     HAIL             4 W LITTLETON           39.59N 105.09W
07/20/2009  M1.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

            HAIL WAS 8 INCHES DEEP.

1015 PM     TSTM WND GST     ARVADA                  39.82N 105.11W
07/20/2009  E60.00 MPH       JEFFERSON          CO   NWS EMPLOYEE

            PEA SIZE HAIL. HEAVY RAIN. POWER OUT.

1015 PM     HAIL             1 SSW FORT LUPTON       40.07N 104.81W
07/20/2009  M0.75 INCH       WELD               CO   TRAINED SPOTTER

            LOTS OF 1 INCH HAIL PILING UP

1012 PM     HAIL             FORT LUPTON             40.09N 104.81W
07/20/2009  M2.00 INCH       WELD               CO   TRAINED SPOTTER

1010 PM     HAIL             ARVADA                  39.82N 105.11W
07/20/2009  M0.75 INCH       JEFFERSON          CO   TRAINED SPOTTER

            HEAVY RAIN

1010 PM     HAIL             2 SSW BROOMFIELD        39.92N 105.08W
07/20/2009  M0.75 INCH       BROOMFIELD         CO   TRAINED SPOTTER

            BROKEN BRANCHES AND MINOR FLOODING

1005 PM     HAIL             3 W FORT COLLINS        40.56N 105.13W
07/20/2009  M0.88 INCH       LARIMER            CO   TRAINED SPOTTER

1001 PM     HAIL             1 NE FIRESTONE          40.13N 104.92W
07/20/2009  M1.00 INCH       WELD               CO   TRAINED SPOTTER

            HEAVY RAIN. WIND NNE 20 TO 30 MPH.


&&

$$
BENTON

 


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