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Mountain West Discussion


Chinook

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We've been in a hole at our house with a bare 0.10" (corresponds well to the hole on the radar just SE of the Denver city limits) since Wed AM. Hopefully today.

Fort Collins got about 0.35" Wednesday and about 0.10" yesterday (CoCoRAHS plots showed lots of variation in Ft. Collins.) It came down pretty hard for a couple minutes yesterday.

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Welp, the wife and I had a trip planned out to Black Canyon of the Gunnison NP this weekend but it looks like we'll be heading south into NM instead because of this system.  Something about a couple of inches of rain and camping on top of a cliff that doesn't seem to sit well with us.

We spent a very rainy weekend there last summer during the monsoon season. Early mornings were gorgeous, the rest of the day we went to Ouray and hung out in the hot springs pool. Still worthwhile. I don't know if NM will be any drier this weekend...

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On Friday night, we got maybe 0.4" of rain. There was a lightning show in the distance and a constant rumbling. I saw some big C-G lightning bolts, and a lot of distant flashes. I haven't seen such a constant rumbling and flashes for a long time!  Loveland had a stalled storm, and got 2 to 4" of rain Friday night, perhaps with flooded parking lots and creeks. That's where all the lightning was coming from.

 

8:00PM friday

 

post-1182-0-02349400-1401039677_thumb.gi

 

post-1182-0-10153500-1401039774_thumb.gi

 

 

 

 

 

 

 

 

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severe thunderstorm watch 233

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   THE NWS STORM PREDICTION CENTER HAS ISSUED A   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF      EASTERN COLORADO     NORTHEAST NEW MEXICO

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 DISCUSSION...STORMS ERUPTING ACROSS THE HIGHER TERRAIN OF THE FRONT   RANGE SHOULD DRIFT EAST INTO MORE SUBSTANTIAL CAPE AND SR-INFLOW.   EXPECT GRADUAL EVOLUTION TO PERSISTENT SUPERCELLS WITH COINCIDENT   INCREASE IN LARGE HAIL AND DAMAGING WIND THREATS.
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Tornado watch likely for eastern colorado

 

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MESOSCALE DISCUSSION 0897   NWS STORM PREDICTION CENTER NORMAN OK   1231 PM CDT SUN JUN 08 2014   AREAS AFFECTED...ERN CO   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY    VALID 081731Z - 081900Z   PROBABILITY OF WATCH ISSUANCE...80 PERCENT
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5 Tornado Warnings in Colorado.

* TORNADO WARNING FOR...  NORTHWESTERN TELLER COUNTY IN CENTRAL COLORADO...* UNTIL 130 PM MDT* AT 1257 PM MDT...A CONFIRMED TORNADO WAS LOCATED 1 MILE NORTHEAST  OF LAKE GEORGE...OR 29 MILES NORTHWEST OF COLORADO  SPRINGS...MOVING NORTHEAST AT 15 MPH.  HAZARD...DAMAGING TORNADO AND QUARTER SIZE HAIL.  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.
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measured 111mph wind at Hugo Colorado, on the night of June 4th

 

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER, CO
634 PM MDT THU JUN 5 2014

...NWS DAMAGE SURVEY FOR 06/04/14 THUNDERSTORM WIND EVENT
IN HUGO...

.THUNDERSTORM WIND 1...

PEAK WIND M:   111 MPH
PATH LENGTH /STATUTE/:  3.7 MILES
PATH WIDTH /MAXIMUM/:   1700 YARDS
FATALITIES:             0
INJURIES:               2

START DATE:             JUNE 04 2014
START TIME:             1040 PM MDT
START LOCATION:         HUGO CO
START LAT/LON:          39.1441 -103.4901

END DATE:               JUNE 04 2014
END TIME:               1052 PM 2014
END LOCATION:           2 SE HUGO CO
END LAT/LON:            39.1166 -103.4333

STRONG WINDS FROM A THUNDERSTORM DOWNBURST MOVED ACROSS HUGO AROUND
1040 PM MDT ON JUNE 4 2014.  AN ANEMOMETER WITH A GOOD EXPOSURE ON
THE NORTH SIDE OF HUGO MEASURED A WIND GUST OF 111 MPH AT 1042 PM.
WITNESSES DESCRIBED THE SUDDEN ARRIVAL OF VIOLENT WIND...TORRENTIAL
RAIN...AND FLYING DEBRIS. 

 

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full information at

 

http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=bou&storyid=102725&source=0

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  • 2 weeks later...

After several days of mainly quiet weather here, we will most likely have a cold front here on Sunday, with areas of CAPE above 1500 J/kg. (The NAM is forecasting over 2000 J/kg on 18z Sunday.) The SREF seems to be indicating effective shear of 40 kt around this area. (This seems a little high, perhaps only 30 kts of shear)

 

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SATURDAY NIGHT AND SUNDAY...AN UPPER LEVEL TROUGH IS PROGGED TO DROP OUT OF THE NORTHERN ROCKIES AND
BRUSH ACROSS NORTHERN COLORADO. THE SURFACE TROUGH IS PROGGED TO SHIFT TO THE SOUTH WITH LOW LEVEL MOISTURE INCREASING AS HIGH PRESSURE BUILDS IN FROM THE NORTH. THE MAIN FRONTAL BOUNDARY WILL
PUSH INTO NERN CO AND THE URBAN CORRIDOR ON LATE SUNDAY MORNING AND AFTN. IT WILL BE COOLER WITH CAPE VALUES INCREASING SIGNIFICANTLY FROM THE URBAN CORRIDOR EASTWARD. PW VALUES IN DENVER CLIMB FM 0.50 INCHES IN THE MORNING TO 0.90 INCHES LATE IN THE DAY. FORECAST CAPES AROUND 2000 J/KG AT 21Z FOR DENVER WITH
GOOD SHEAR AS WELL.

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A monster storm hit here last night from 10:30 to 12:00. There were downpours, constant lightning flashes, and a few 1/2" hailstones at my house. Here is the radar, and the CoCoRAHS precip plot,

 

2-inch hail report:

 

0459    200    1 S FORT COLLINS     LARIMER     CO    4054    10507    (BOU)

 

 

Composite reflectivity at 10:48PM

 

post-1182-0-82481100-1403712622_thumb.gi

 

post-1182-0-38156800-1403708852_thumb.gi

 

 

 

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