Tag Archives: flash flood watch

More heavy rains for parts of Colorado yesterday

Flash Flood Warnings were issued again for parts of Colorado on Wednesday with the heaviest rains falling over central and southern parts of the state.  Here are some of the local storm reports from around Colorado yesterday:

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE PUEBLO CO
1131 PM MDT WED AUG 03 2011

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

0417 PM     HAIL             6 SE TEXAS CREEK        38.34N 105.50W
08/03/2011  M1.00 INCH       FREMONT            CO   TRAINED SPOTTER

0425 PM     HAIL             8 ESE COTOPAXI          38.33N 105.54W
08/03/2011  E1.75 INCH       FREMONT            CO   BROADCAST MEDIA

0529 PM     FLASH FLOOD      WOODLAND PARK           38.99N 105.05W
08/03/2011                   TELLER             CO   TRAINED SPOTTER

            6 INCHES OF WATER FLOWING ACROSS HIGHWAY 67 IN SEVERAL
            SPOTS. FOUNTAIN CREEK FLOWING FAST.

0530 PM     FLASH FLOOD      5 N KIM                 37.32N 103.35W
08/03/2011                   LAS ANIMAS         CO   TRAINED SPOTTER

            12 INCHES OF WATER FLOWING ACROSS HIGHWAY 109. FENCES
            WASHED OUT ON WEST SIDE OF THE ROAD.

0547 PM     HEAVY RAIN       KIM                     37.25N 103.35W
08/03/2011  M1.45 INCH       LAS ANIMAS         CO   TRAINED SPOTTER

            FELL SINCE 130 PM.

Abundant moisture to result in heavy rains across the state

Abundant low and mid level moisture will combine with an upper level disturbance to trigger widespread showers and thunderstorms across Colorado today.  These storms will be slow moving, and as a result, have a good potential to produce locally heavy rains of 1-2″ (from the strongest storms).

A flash flood watch has been issued for southwest Colorado as well as the high mountain areas.  In southern Colorado, a flash flood watch also issued for the foothills and areas near the I25 corridor.

Widespread storms with heavy rains expected west slope today

Flow of monsoonal moisture into western Colorado will result in widespread showers and thunderstorms today, with the potential for some storms to produce locally heavy rains.  As a result of the potential for heavy rains, a flash flood watch has been issued for a large portion of southwestern Colorado, basically from the Continental Divide west and I70 south through this evening.  Highs in the 80s lower elevations of the west slope, and in the 70s most mountain areas.

Across northeastern Colorado, low level moisture has also increased, and will result in scattered showers and thunderstorms today.  These will be most numerous over the foothill areas.  Hot temperatures in the 90s expected lower elevations with 70s and 80s in the foothills.  Some storms have the potential for heavy rains, though storms producing heavy rains should be isolated.  Across the far northeastern corner of the state, a threat for severe thunderstorms exists today.

Across southeastern Colorado, scattered showers and thunderstorms are expected with the potential for locally heavy rains.  Highs generally in the 90s across the plains and mid 70s to mid 80s foothill areas.

Relentless Thunderstorms Continue to Pound the Front Range

Strong and severe thunderstorms yesterday(Wednesday) brought heavy rainfall, large hail and flooding to parts of the I-25 corridor and foothills.  Some of the hardest hit areas were Colorado Springs, Denver and surrounding suburbs and Boulder County.  Colorado Springs and DIA both set daily precipitation records with 1.03″ at DIA and a whopping 2.30″ at the airport in Colorado Springs.  The moisture is welcome in El Paso County as there was only just over 12″ of snow reported the entire winter at the airport and conditions have continued extremely dry through the spring, but this is Colorado and it seems to be either more rain than we want or less than we need without much of a happy medium.  The wet weather pattern started back on July 5th and many NE areas of the state have already reported an entire months worth of precipitation and some localized areas nearly a half a years worth of total precipitation!  With more thunderstorms expected to develop later this afternoon and evening a Flash Flood Watch has been issued for much of NE Colorado until midnight tonight.  Below are some of the significant weather reports from yesterday in eastern Colorado:

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1032 PM MDT WED JUL 13 2011

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

0931 PM     HAIL             DENVER INTL AIRPORT     39.87N 104.67W
07/13/2011  M1.00 INCH       DENVER             CO   TRAINED SPOTTER

0930 PM     TSTM WND GST     DENVER INTL AIRPORT     39.87N 104.67W
07/13/2011  M59.00 MPH       DENVER             CO   ASOS

0755 PM     FLASH FLOOD      3 N BOULDER             40.07N 105.25W
07/13/2011                   BOULDER            CO   EMERGENCY MNGR

            HEAVY RAINS OVER FOURMILE CANYON AND VICINITY CAUSED 4
            FOOT SURGE ALONG FOURMILE CREEK THROUGH ORODELL AND INTO
            THE ENTRY OF BOULDER CREEK.

0752 PM     HAIL             3 WNW LOVELAND          40.44N 105.12W
07/13/2011  M1.75 INCH       LARIMER            CO   911 CALL CENTER

0749 PM     HAIL             4 SSE FORT COLLINS      40.50N 105.04W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

            SHEETS OF ONE INCH HAIL WITH SIGNIFICANT TREE DAMAGE NEAR
            SOUTHRIDGE GOLF COURSE.

0745 PM     HAIL             1 SE FORT COLLINS       40.55N 105.05W
07/13/2011  M1.75 INCH       LARIMER            CO   TRAINED SPOTTER

0745 PM     HAIL             3 S FORT COLLINS        40.51N 105.07W
07/13/2011  M1.50 INCH       LARIMER            CO   TRAINED SPOTTER

            WARREN LAKE

0745 PM     HAIL             5 S FORT COLLINS        40.48N 105.07W
07/13/2011  M1.75 INCH       LARIMER            CO   TRAINED SPOTTER

            SHATTERED HOUSE WINDOW NEAR COLLEGE AND TRILBY.

0745 PM     HAIL             4 S FORT COLLINS        40.50N 105.07W
07/13/2011  M1.50 INCH       LARIMER            CO   TRAINED SPOTTER

            BROKEN WINDOWS...DAMAGED SHINGLES...SHREDDED LEAVES AND
            ESTIMATED THUNDERSTORM WINDS UPTO 50 MPH.

0743 PM     HAIL             5 S FORT COLLINS        40.48N 105.07W
07/13/2011  M1.25 INCH       LARIMER            CO   TRAINED SPOTTER

0742 PM     HAIL             4 SSW FORT COLLINS      40.50N 105.10W
07/13/2011  M1.00 INCH       LARIMER            CO   AMATEUR RADIO

0739 PM     HAIL             3 NNW LOVELAND          40.46N 105.09W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0738 PM     HAIL             4 N LOVELAND            40.48N 105.07W
07/13/2011  M1.25 INCH       LARIMER            CO   TRAINED SPOTTER

0737 PM     HAIL             5 W LOVELAND            40.42N 105.17W
07/13/2011  M1.75 INCH       LARIMER            CO   TRAINED SPOTTER

0734 PM     HAIL             1 W LOVELAND            40.42N 105.09W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0730 PM     HAIL             BUFFALO CREEK           39.38N 105.27W
07/13/2011  M2.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

0728 PM     HAIL             3 SW LOVELAND           40.39N 105.11W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0725 PM     HAIL             10 NW BERTHOUD          40.41N 105.22W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

            NORTH SIDE OF CARTER LAKE

0717 PM     HAIL             9 WSW BERTHOUD          40.26N 105.24W
07/13/2011  M1.00 INCH       BOULDER            CO   TRAINED SPOTTER

            SOUTHWEST EDGE OF CARTER LAKE

0711 PM     HAIL             4 NNW LYONS             40.29N 105.29W
07/13/2011  M1.00 INCH       LARIMER            CO   TRAINED SPOTTER

0700 PM     FLASH FLOOD      7 W BOULDER             40.03N 105.38W
07/13/2011                   BOULDER            CO   TRAINED SPOTTER

            GOLD RUN CREEK HAD 3 TO 4 RISE WITH LOGS AND DEBRIS ALONG
            GOLD RUN ROAD.

0700 PM     FLASH FLOOD      7 W BOULDER             40.03N 105.38W
07/13/2011                   BOULDER            CO   TRAINED SPOTTER

            THREE HOMES WITH WATER UPTO WINDOWS AND INTO STRUCTURES
            AT FOURMILE CANYON ROAD AND GOLD RUN ROAD.

0640 PM     HAIL             5 WSW DENVER            39.70N 105.05W
07/13/2011  M1.00 INCH       DENVER             CO   NWS EMPLOYEE

0634 PM     HAIL             1 W ENGLEWOOD           39.65N 105.01W
07/13/2011  M1.25 INCH       ARAPAHOE           CO   TRAINED SPOTTER

0626 PM     HAIL             1 SW DENVER             39.72N 104.98W
07/13/2011  M1.50 INCH       DENVER             CO   STORM CHASER

            SIGNIFICANT TREE DAMAGE

0624 PM     HAIL             6 WSW DENVER            39.69N 105.07W
07/13/2011  M1.25 INCH       JEFFERSON          CO   TRAINED SPOTTER

            MINOR STREET FLOODING

0620 PM     HAIL             1 SW DENVER             39.72N 104.98W
07/13/2011  M1.00 INCH       DENVER             CO   TRAINED SPOTTER

            STREET FLOODING

0617 PM     HAIL             DENVER                  39.73N 104.96W
07/13/2011  M1.00 INCH       DENVER             CO   TRAINED SPOTTER

0614 PM     HAIL             3 W DENVER              39.73N 105.02W
07/13/2011  M1.00 INCH       DENVER             CO   TRAINED SPOTTER

            MINOR FLOODING

0609 PM     HAIL             LAKEWOOD                39.70N 105.11W
07/13/2011  M1.25 INCH       JEFFERSON          CO   TRAINED SPOTTER

0608 PM     HAIL             LAKEWOOD                39.70N 105.11W
07/13/2011  M1.00 INCH       JEFFERSON          CO   TRAINED SPOTTER

0604 PM     HAIL             LAKEWOOD                39.70N 105.11W
07/13/2011  M0.75 INCH       JEFFERSON          CO   TRAINED SPOTTER

0420 PM     HAIL             7 S ELIZABETH           39.26N 104.60W
07/13/2011  M1.00 INCH       ELBERT             CO   NWS EMPLOYEE

0300 PM     HAIL             1 WSW MATHESON          39.16N 104.00W
07/13/2011  M0.88 INCH       ELBERT             CO   STORM CHASER

0231 PM     HAIL             SIMLA                   39.14N 104.08W
07/13/2011  M1.25 INCH       ELBERT             CO   TRAINED SPOTTER

0222 PM     HAIL             3 N SIMLA               39.18N 104.08W
07/13/2011  M1.00 INCH       ELBERT             CO   STORM CHASER
0547 PM     HAIL             2 SE FOUNTAIN           38.67N 104.68W
07/13/2011  M0.88 INCH       EL PASO            CO   TRAINED SPOTTER

0605 PM     HAIL             6 E BEULAH              38.08N 104.87W
07/13/2011  E1.00 INCH       PUEBLO             CO   PUBLIC

0707 PM     HAIL             5 SSW BLACK FOREST      38.95N 104.74W
07/13/2011  M0.88 INCH       EL PASO            CO   COCORAHS

0709 PM     HAIL             5 SSW BLACK FOREST      38.95N 104.75W
07/13/2011  M0.75 INCH       EL PASO            CO   TRAINED SPOTTER

0710 PM     HAIL             4 E AIR FORCE ACADEMY   38.98N 104.78W
07/13/2011  M0.88 INCH       EL PASO            CO   TRAINED SPOTTER

0710 PM     HAIL             5 SW BLACK FOREST       38.96N 104.75W
07/13/2011  M1.00 INCH       EL PASO            CO   BROADCAST MEDIA

0715 PM     HAIL             4 ESE AIR FORCE ACADEMY 38.96N 104.78W
07/13/2011  E1.75 INCH       EL PASO            CO   BROADCAST MEDIA

Monsoonal Flow to continue, resulting in widespread storms

The southwesterly flow aloft resulting in abundant low and mid level subtropical moisture continues across Colorado today.  The result will be a continuation of widespread thunderstorm activity, with the potential for locally heavy rains again today as well as tomorrow.

In western Colorado, look for highs in the 80s with widespread showers and thunderstorms today.  A flash flood watch has been issued for all of western Colorado and eastern Utah, effective 1201pm today through Tuesday evening.

Mountain areas also to see widespread showers and thunderstorms today, with high temperatures in the 60s and 70s.

Across eastern Colorado, widespread showers and thunderstorm activity is also expected, with the potential for locally heavy rains.  Northeastern areas of the state should see highs in the 80s, with severe storms possible with hail of 1″ or greater and/or winds of 58mph or greater.  Southeastern areas of the state should see highs in the 80s, with a chance for scattered showers and thunderstorms.

More of the same is expected statewide on Tuesday before drier air begins to move in to the state on Wednesday.

Heavy Rainfall Possible from Thunderstorms Today

Moisture is abundant along the Front Range of Colorado today and will combine with daytime heating to initiate multiple rounds of thunderstorms into the evening hours.  Some storms may become strong or even severe with large hail, gusty winds and heavy rain.  There is a Flash Flood Watch in effect for Larimer County and the 4 mile burn area in Boulder County from noon to 10:00pm tonight.  Although there is not a flood advisory or watch for other areas of the Front Range minor flooding cannot be ruled out.  Temperatures today along the I-25 corridor will be much cooler with increased cloud cover with highs generally in the upper 70s to mid 80s.

Flash Flood Watch issued for much of NE Colorado

Flash Flood Watch issued early today has now been cancelled.

The National Weather Service in Boulder has issued a Flash Flood Watch which means that flash flooding is possible within the watch area and includes the following: Jefferson County, Broomfield County, Douglas County, Adams County, Denver County, DIA, Arapahoe County, the City of Aurora, Arvada, Wheat Ridge, Lakewood and much of NE Colorado.

This watch is valid from 1200 PM to 1000 PM.

Showers and thunderstorms become numerous today

Monsoonal moisture streaming into western Colorado will result in widespread showers and thunderstorms today.  Hot temperatures to continue as well with highs in the 90s.  More of the Wednesday and Thursday as monsoonal moisture combines with daytime heating and upper level dynamics for widespread showers and thunderstorms.

Mountain areas will see scattered showers and thunderstorms today as well, with highs in the 60s higher mountain areas to 70s lower elevations of the mountains.  Continued shower and thunderstorm chances on Tuesday and Wednesday.  Stronger storms have the potential for heavy rains which would add to already full creeks and rivers for potential flooding.  A flood advisory remains in effect for many northern mountain areas.

Across northeastern Colorado, a cold front had moved through the area with low level moisture increasing behind the front.  Combined with daytime heating and good upper level dynamics, widespread showers and thunderstorms are expected today, with the potential for stronger storms to produce locally heavy rains.  A flash flood watch has been issued for several burn scars in the northern foothills today.  High temperatures generally in the 80s across the northeast plains. Thunderstorms may become severe today with hail of 1″ or greater and/or winds of 58mph or greater.   Widespread shower and thunderstorm chances will continue on Wednesday as well.

Across southeastern Colorado, highs in the upper 80s to low 90s.  Scattered showers and thunderstorms as well, with the potential for severe storms with large hail of 1″ or more and strong winds of 58mph or greater.  Some storms may produce locally heavy rains as well.  More of the same on Wednesday with good chances for showers and thunderstorms.

Flooding for Many US States

Flash Flood Watches, Flash Flood Warnings, Flood Watches, Flood Warnings or Flood Advisories are in effect for many US states.  One or more of the above watches, warnings and advisories are in effect for the following states:  Vermont, New York, Massachusetts, Connecticut, Alabama, Louisiana, Arkansas, Missouri, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Nebraska, N. Dakota, S. Dakota, Montana, Wyoming, Colorado, Utah, Idaho, California, Nevada and Washington State.  Over the western US the flooding is mainly due to above normal snowfall this winter which is now melting due to warmer weather.  In the upper Midwest it is a combination of melting snow and continuous upper level low pressure systems bringing heavy rainfall to the heartland.  Other areas are being affected by a storm currently which is expected to bring more heavy rainfall to eastern parts of the Country.  One town in particular, Minot ND has evacuations in place as the Souris River is expected to reach flood stages never seen before.  About 11,000 residents of Minot have been ordered to leave their homes by 6:00pm this evening.  More on the Minot, ND flooding can be found at MSNBC.