Flood, San Miguel
- When
- August 10, 1:30 PM MST to 2:30 PM MST
- Where
- San Miguel County, Placerville
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 38.004, -108.406 (the zone’s center; the record gives no point)
Flood in Colorado, August 10, 2001
Slow moving thunderstorms dropped heavy rain over Placerville resulting in minor mud and rock slides. The slides closed portions of highway 145 for a short period of time until roads crews were able to clean the debris from the highway.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS GJT wrote it up.
Slow moving thunderstorms dropped heavy rain over Placerville resulting in minor mud and rock slides. The slides closed portions of highway 145 for a short period of time until roads crews were able to clean the debris from the highway.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before the first event at Aug 10, 12:42 PM MST, 48 minutes earlier.
Area forecast discussion, Aug 10, 12:42 PM MST, 48 minutes before
WESTERN COLORADO & EASTERN UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 142 PM MDT FRI AUG 10 2001 A BIT MORE WESTERLY FLOW ALOFT TODAY APPEARS TO BE MOVING TSTMS TO THE EAST AND NOT ALLOWING RAINFALL TO REMAIN OVER ONE PARTICULAR AREA FOR VERY LONG. LOWER ATMOS REMAINS MOIST WITH THETA-E RIDGE PERSISTING OVR WRN CO. UPPER ATMOS SIMILAR TO THU WTIH NEAR WET ADIABATIC LAPSE RATE. ENUF CLD COVER TO INHIBIT SFC HEATING...SO DONT BLV CAPE WILL BE ANY GREATER THAN THU EITHER. TSTMS FIRING MAINLY IN THE GAPS IN CLOUD COVER AND ALONG THE FRINGES OF THE CLOUD BAND STRETCHING SW TO NE ACROSS THE WRN CO. ALSO TSTMS FIRING ALONG RIDGELINES WITH MORE PERSISTENT PCPN. DECIDED NOT TO ISSUE FFA FOR SW PORTION OF CWA MAINLY DUE TO TODAYS STORM MOVEMENT. DRIER AIR MOVING INTO NW PORTION OF THE CWA WITH INCREASING WESTERLY FLOW ALOFT. MODELS HAVE THIS SLIDING SOUTH NEXT 48 HRS...PUSHING MOISTURE PLUME EAST. SAT SHOULD BE DRIER THAT TDA SO WILL KEEP CURRENT ZONE TEMP AND PCPN TRENDS. CJC IN THE THE EXTENDED (MON-FRI)...RIDGE BUILDS OVER ERN UT AND WRN CO BY MONDAY...THEN IS SHIFTED WESTWARD BY WED AS TROF DROPS OUT OF WRN CANADA INTO THE MIDWEST. MEX GUIDANCE POPS CONTINUE TO RUN IN SCT/HIGH SCT CATEGORIES EXCEPT AT PUC...AS MRF BRINGS MOISTURE PLUME ACROSS THE AREA MON-TUE WITH SHORTWAVES PERIODICALLY MOVING BY IN A WESTERLY FLOW. HOWEVER...WILL TREND TOWARD DRIER CONDITIONS IN ERN UT AND WRN CO VALLEYS AFTER WED AS RIDGE AXIS SHIFTS TO THE WEST PUTTING AREA IN A MORE NWLY FLOW. WILL KEEP CHANCE OF TSTMS THROUGH THE PERIOD FOR CO MTNS. JAD .GJT...NONE.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 flood. Local standard time, as filed.
What these are
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Lightning Strike in Florida, August 10, 2001
- Flash Flood in Alabama, August 10, 2001
- Lightning Strike in Massachusetts, August 10, 2001
- Lightning Strike in Delaware, August 10, 2001
- Damaging Wind and Lightning Strikes in Texas, August 10, 2001
- Hail and Damaging Winds in Virginia, August 10, 2001
- Damaging Wind in Florida, August 10, 2001
- Flash Flooding in Mississippi, August 10, 2001
- Damaging Wind in North Carolina, August 10, 2001
- Flash Flood in Alabama, August 10, 2001
- Flash Flood in Mississippi, August 10, 2001
- Lightning Strike in North Carolina, August 10, 2001
More
Every storm in Colorado in 2001Every state in 2001This day in weather historyWarnings in Colorado, August 2001
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5264302.