Alert archive / Colorado / Flash Flood Warnings in 2007
Flash Flood Warning 27, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 2, 2007, 11:13 PM MDT for Weld County, Colorado. It took effect at Aug 2, 2007, 11:19 PM MDT. It was in force for 116 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 2, 2007, 11:13 PM MDT (05:13 UTC)
- In effect from
- Aug 2, 2007, 11:19 PM MDT
- Expired
- Aug 3, 2007, 1:15 AM MDT
- In force
- 116 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Weld County, CO
The radar
The Cheyenne radar (KCYS), 75 km from the middle of the area, began a volume at 05:15 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 11:57 PM MDT | FLASH FLOOD | Nne Fort Lupton, CO | SIX TO EIGHT INCHES WATER FLOWING ACROSS COUNTY ROAD 18 |
| Aug 3, 12:03 AM MDT | FLASH FLOOD | 2 Ne Fort Lupton, CO | SEVERAL ROADS WASHED OUT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 5.2 hours before the alert went out and 125 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 777 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1405 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KBOU 030519 FFWBOU COC123-030715- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 1113 PM MDT THU AUG 2 2007 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN WELD COUNTY IN NORTHEAST COLORADO * UNTIL 115 AM MDT * AT 1113 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM COVERING MUCH OF SOUTHWEST WELD COUNTY. THIS STORM WAS MOVING SLOWLY NORTHEAST AT 5 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUDSON AND FORT LUPTON. DOPPLER RADAR ESTIMATES THAT AROUND OVER 3 INCHES OF RAIN HAS FALLEN FROM THIS STORM IN THE LAST 2 HOURS BETWEEN FORT LUPTON AND MILTON RESERVOIR. ADDITIONAL STORMS WILL CONTINUE TO MOVE INTO THE AREA DURING THE NEXT FEW HOURS...RESULTING IN CONTINUED HEAVY RAIN AND FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. TURN AROUND...DO NOT DROWN. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. LAT...LON 4019 10486 4007 10487 4007 10453 4025 10456 $$ SWE
2 follow-up statements
000 WGUS75 KBOU 030630 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1224 AM MDT FRI AUG 3 2007 COC123-030715- WELD CO- 1224 AM MDT FRI AUG 3 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM MDT FOR SOUTHWESTERN WELD COUNTY... AT 1224 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM 13 MILES EAST OF FORT LUPTON...OR ABOUT 20 MILES SOUTHEAST OF GREELEY. THIS STORM WAS MOVING NORTHEAST AT 10 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT LUPTON. DOPPLER RADAR ESTIMATES THAT UP TO 4 INCHES OF RAIN HAS FALLEN FROM THIS STORM IN THE LAST 3 HOURS. THE HEAVIEST RAIN HAS MOVED OUT OF THE FLASH FLOOD AREA...BUT CONSIDERABLE FLOODING REMAINS. SPOTTERS IN THE AREA...INDICATED SEVERAL ROADS WASHED OUT IN THE FORT LUPTON AREA...INCLUDING AREAS ALONG COUNTY ROAD 18 AND NEAR THE ARISTOCRAT SUBDIVISION NEAR COUNTY ROADS 18 AND 14. THERE WAS ALSO WATER OVER THE ROAD AT HIGHWAY 85 AND COUNTRY ROAD 16 EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4019 10486 4007 10487 4007 10453 4025 10456 $$ ENTREKIN
000 WGUS75 KBOU 030719 FFSBOU FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 114 AM MDT FRI AUG 3 2007 COC123-030724- WELD CO- 114 AM MDT FRI AUG 3 2007 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHWESTERN WELD COUNTY... THE STORM THAT PROMPTED THE WARNING HAS EXITED THE AREA. WELD COUNTY OFFICIALS INDICATED NO PROBLEM AREAS. HOWEVER...THERE STILL MAY BE SOME STANDING WATER ACROSS LOW LYING AREAS AND SOME INTERSECTIONS AND COUNTY ROADS MAY STILL HAVE WATER ON THEM AROUND THE FORT LUPTON AREA. MOTORISTS ARE STILL URGED TO USE CAUTION IN DRIVING THROUGH SOUTHWEST WELD COUNTY TONIGHT. LAT...LON 4019 10486 4007 10487 4007 10453 4025 10456 $$ ENTREKIN
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this flash flood warning went out at Aug 2, 3:00 PM MDT, 8 hours 13 minutes earlier.
Area forecast discussion, Aug 2, 3:00 PM MDT, 8 hours 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 300 PM MDT THU AUG 02 2007 .SHORT TERM...PLENTY OF LOW LEVEL MOISTURE ON THE PLAINS BEHIND YESTERDAYS FRONT WITH DEWPOINTS ONLY DROPPING INTO THE MID TO UPPER 50S THIS AFTERNOON TO LOWER 60S FARTHER EAST. COOLER TEMPERATURES THOUGH ARE ALSO IN PLACE AND THIS HAS KEPT MOST OF THE PLAINS CAPPED SO FAR EXCEPT FOR AN AREA OF CONVERGENCE ALONG THE PALMER DIVIDE. IT MAY REMAIN TOO COOL FOR CONVECTION TO DEVELOP OVER THE MORE EASTERN PLAINS...BUT STORMS FROM ELSEWHERE COULD MOVE IN EVEN AFTER DARK. FLOW IS BECOMING MORE SELY AND INCREASING AND THE NAM SHOWS PRETTY BRISK SE FLOW OVERNIGHT WHICH COULD SUPPORT SOME STORMS WELL INTO THE NIGHT ON THE PLAINS THAT MOVE IN FROM THE WEST. THE UPPER LEVEL FLOW IS MORE FAVORABLE TODAY FOR STORMS TO MOVE TO THE EAST AS THE UPPER LEVEL RIDGE HAS SHIFTED SLIGHTLY EAST AND SOUTH. SO WITH STORMS DEVELOPING NOW IN THE MOUNTAINS IN THE MONSOON MOISTURE THESE ARE EXPECTED TO EVENTUALLY PUSH OFF/REDEVELOP EASTWARD INTO THE URBAN CORRIDOR OVER THE NEXT FEW HOURS. SO FAR STORMS ARE MOVING FROM THE SOUTHWEST BUT HAVE WEEKEND AS THEY COME OFF THE FOOTHILLS WITH THE LOWER LEVEL AIR STILL TOO STABLE. TEMPERATURES HAVE WARMED INTO THE LOW 80S WHICH SHOULD BE GETTING CLOSER TO SUPPORTING STORMS OFF THE FOOTHILLS. LATEST ACARS SOUNDINGS HEADING EAST INDICATE A SLIGHT COOLING WHERE THE CAP NEAR 700 MB WAS BUT AN INCREASE IN THE HIGHER LEVEL TEMPS AND THIS MAY BE WHAT IS ALSO KEEPING THINGS DOWN. BUT WITH MOISTURE HOLDING (GPS PRECIPITABLE WATER INSTRUMENT IN BOULDER HAS SHOWN PRECIPITABLE WATER INCREASING ALL DAY WITH OVER 1.3 INCHES NOW) WOULD HAVE TO THINK STORMS HAVE A DECENT CHANCE OF GETTING ONTO THE PLAINS. PROBABLY THE 40 PERCENT POPS CURRENTLY IN THE FORECAST FOR THIS EVENING WILL SUFFICE. GIVEN SOME UNCERTAINTIES WILL HOLD OFF ON HOISTING ANY FLASH FLOOD WATCH AT THIS TIME BUT CERTAINLY AT LEAST BRIEF HEAVY RAINS COULD BE PRODUCED BY SOME STORMS. TOMORROW THE FLOW BECOMES EVEN MORE WESTERLY ALOFT AND THE MAIN MOISTURE PLUME CENTERS OVER THE MOUNTAINS SO STORMS SHOULD BE ABLE TO EASILY MOVE OFF THE HIGHER TERRAIN. TEMPERATURES ARE ALSO EXPECTED TO REBOUND BUT THE AMOUNT OF LOW LEVEL MOISTURE AND THE CAP STRENGTH WILL BE THE UNCERTAINTIES. PRETTY MUCH KEPT THE CURRENT FORECAST WHICH INDICATES BEST CHANCE ON THE PLAINS AS YOU MOVE CLOSER TO THE FOOTHILLS WITH A CAP HOLDING THINGS DOWN FARTHER EAST. .LONG TERM...HOPE REMAINS ALIVE FOR THOSE OF US STILL WISHING FOR SOME BENEFICIAL RAINFALL. HOT MID-UPPER LEVEL TEMPERATURES AT THE CORE OF THE MEAN HIGH PRES RIDGE ALOFT NOW WOBBLING OVER THE STATE STILL PROGGED BY THE VARIOUS MODELS AT OUR DISPOSAL TO SHIFT E-SEWRD OVER THE NEXT FEW DAYS. THIS E-SEWRD DISPLACEMENT WILL ALLOW A SIMILAR SHIFT IN THE SUBTROPICAL MOISTURE PLUME CURRENTLY TO OUR WEST...BUT IT NOW APPEARS NOT UNTIL LATE IN THE WEEKEND. EVEN SO A SLIGHT SHIFT IN TH RIDGE RESULTS IN SLIGHT COOLING ALOFT ON SATURDAY. AT LOWER LEVELS...WIND/TEMPERATURE/PRESSURE FIELDS SHOW A WEAK FRONTAL BNDRY SLIDING SWRD ACROSS THE NERN PLAINS SATURDAY MORNING. DO NOT SEE MUCH COOLING WITH ITS PASSAGE...BUT DEWPT AND THETA-E FIELDS INDICATE A STEADY REDUCTION IN LOW-LEVEL MOISTURE BEHIND THE FRONT THROUGH THE DAY. HOWEVER FORECAST SOUNDINGS AND SPATIAL CROSS SECTIONS STILL INDICATE ADEQUATE MOISTURE...AND STEEP ENOUGH LAPSE RATES TO GENERATE SCATTERED T-STORMS IN THE HIGH COUNTRY AND FOOTHILLS AND ISOLATED TO WDLY SCATTERED STORMS ON THE PALMER DVD AND NEARBY PLAINS DURING THE AFTERNOON AND EVENING. POST-FRONTAL ENVIRONMENT FARTHER OUT ACROSS THE NERN PLAINS APPEARS TOO STABLE FOR ANY T-STORMS DVLPMNT. EXPECT TEMPERATURES ON SATURDAY TO BE ABOUT THE SAME AS THE DAY BEFORE EVEN WITH THE WEAK FRONTAL PASSAGE. BY SUNDAY...WITH THE MONSOONAL MOISTURE PLUME INCHING CLOSER TO THE FRONT RANGE...CHANCES FOR MEASURABLE PRECIPITATION SHOULD GO UP. MODELS SHOW THE PREVIOUS DAYS FRONTAL BNDRY STALLING OUT SOMEWHERE ACRS SERN COLORADO. MODELS SHOW SELY LOW-LEVEL FLOW DVLPG ON THE PLAINS DURING THE MORNING WHICH ADVECTS HIGHER THETA-E AIR UP FM SERN COLORADO/SWRN KANSAS DURING THE DAY. AS A RESULT SFC BASED CAPES BY AFTERNOON IN THE 1500-2500 J/KG JUST EAST OF THE I-25 URBAN CORRIDOR. FURTHERMORE MODELS HINT AT A WEAK DISTURBANCE NEAR 500MB WHICH THEY SHOW PASSING OVER THE AREA AROUND 00Z/MONDAY. FOR THESE REASONS...HAVE RAISED PRECIP CHANCES ALL AREAS...ESPLY DURING THE EVENING HOURS. AS FOR TEMPERATURES...SLIGHT MODERATION IN THE POST FRONTAL ENVIRONMENT SHOULD EQUATE TO A 1-3F WARMUP IN DAYTIME SFC TEMPERATURES. BY MONDAY...MODELS SHOW THE BACK EDGE OF THE SUBTROPICAL MOISTURE PLUME PASSING OVER THE AREA. EMBEDDED WITHIN THIS FLOW MODELS SHOW A WELL PRONOUNCED MID-LEVEL SHORTWAVE TROUGH AND VORT MAXIMA. TIMING THEIR ARRIVAL ALWAYS A BIG CHALLENGE. BUT SHOULD THIS FEATURE ARRIVE AS PROGGED BY THE GFS...SOMETIME LATE AFTERNOON OR EVENING...COULD SEE THE BEST CHANCE FOR SIGNIFICANT RAINFALL ACROSS THE CWFA...MAYBE A BIT TOO MUCH RAIN IN SOME AREAS. OF COURSE TIMING THESE FEATURES THIS FAR OUT IS ALWAYS A REAL CHALLENGE. FOR THAT REASON WILL REFRAIN FROM MAKING TOO MANY CHANGES TO THE PREVIOUS FCST PACKAGE. JUST SOMETHING TO KEEP IN MIND. FOR THE REMAINDER OF THE EXTENDED PERIOD...WITH THE MEAN UPPER RIDGE MAKING SLOW WWRD PROGRESS BACK OVER THE CNTRL/SRN ROCKY MTN REGION BY MIDWEEK...SHOULD SEE A GRADUAL REDUCTION IN STORM COVERAGE AS WELL AS A SLIGHT INCREASE IN TEMPERATURES EACH DAY. && .AVIATION...LIKELY TRW HIGHER TERRAIN AND SCT TRW LOWER TERRAIN THROUGH 06Z. SOME STORMS COULD LINGER LATER.S MVFR CONDITONS CIGS/VSBYS POSSIBLE WITH PASSING TSRA THUR PRD. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. && SZOKE/BAKER
Hazardous weather outlook, Aug 2, 11:05 AM MDT, 12 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1105 AM MDT THU AUG 02 2007 COZ030>051-031200- JACKSON COUNTY BELOW 9000 FEET-WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/GILPIN/CLEAR CREEK/ SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-CENTRAL AND SOUTHEAST PARK COUNTY-LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/ EAST BROOMFIELD COUNTY-ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1105 AM MDT THU AUG 02 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT MOISTURE HAS INCREASED TODAY AT LOW LEVELS WITH EASTERLY FLOW. TEMPERATURES THOUGH WILL BE COOLER THAN YESTERDAY AND THIS WILL KEEP THE ATMOSPHERE CAPPED FOR AWHILE. THE CAP SHOULD BE ABLE TO BREAK IN THE MOUNTAINS AND FOOTHILLS AS THERE IS BETTER HEATING IN THESE AREAS...SO THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOON. THESE STORMS ARE EXPECTED TO DRIFT EASTWARD OFF THE FOOTHILLS AS THERE IS A LITTLE MORE WESTERLY FLOW AT HIGHER LEVELS TODAY. THIS SHOULD BRING THUNDERSTORMS INTO THE URBAN CORRIDOR BY ABOUT 2PM BUT CONTINUING INTO THE EVENING. FARTHER EAST STORMS SHOULD BE MORE SCATTERED AND DEVELOP LATER BUT COULD PERSIST WELL INTO THE NIGHT. STORMS THAT DO DEVELOP TODAY COULD PRODUCE HEAVY RAINS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL REMAIN IN THE FORECAST THROUGH EARLY NEXT WEEK AS A PLUME OF QUITE MOIST AND UNSTABLE AIR HANGS OVER THE REGION. SOME OF THESE STORMS LATE IN THE DAY MAY PRODUCE LOCALLY HEAVY RAINFALL...MAINLY OVER AND NEAR THE MOUNTAINS. THEN LOOK FOR A RETURN TO SOMEWHAT DRIER AND WARMER CONDITIONS BY TUESDAY AS THE HIGH PRESSURE RIDGE ALOFT SHIFTS BACK OVER COLORADO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. D/L/SZOKE/BAKER
In the hours before
Local storm report, Aug 2, 8:45 PM MDT, 2 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
845 PM MDT THU AUG 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0838 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.96 INCH LARIMER CO MESONET
0830 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.92 INCH LARIMER CO TRAINED SPOTTER
4.92 INCHES RAIN PAST 2 HOURS
0825 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.00 INCH LARIMER CO AMATEUR RADIO
FOUR INCHES RAIN PAST HOUR
0825 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SEVERAL BASEMENTS FLOODED CAMPUS WEST COLORADO STATE
UNIVERSITY 2.00 INCHES RAIN SO FAR
0815 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO TRAINED SPOTTER
WATER OVER ROAD AT FOSSIL CREEK AND HIGHWAY 287
0810 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.20 INCH LARIMER CO TRAINED SPOTTER
2.20 INCHES RAIN IN ONE HOUR ALONG WITH SMALL HAIL
0745 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.50 INCH LARIMER CO AMATEUR RADIO
2.5 INCHES RAIN IN 30 MINUTES AT 1-25 AND HARMONY
0700 PM FLASH FLOOD 4 SW FORT COLLINS 40.51N 105.12W
08/02/2007 LARIMER CO AMATEUR RADIO
WATER IN CURBS 3 INCHES RAIN PAST 20 MINUTES
&&
JKLocal storm report, Aug 2, 9:00 PM MDT, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
900 PM MDT THU AUG 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0838 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.96 INCH LARIMER CO MESONET
0830 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.92 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0825 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SEVERAL BASEMENTS FLOODED CAMPUS WEST COLORADO STATE
UNIVERSITY 2.00 INCHES RAIN SO FAR
0825 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 E2.44 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
0825 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.00 INCH LARIMER CO AMATEUR RADIO
PAST HOUR
0815 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO TRAINED SPOTTER
WATER OVER ROAD AT FOSSIL CREEK AND HIGHWAY 287
0810 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.20 INCH LARIMER CO TRAINED SPOTTER
PAST HOUR
0745 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.50 INCH LARIMER CO AMATEUR RADIO
PAST 30 MINUTES AT 1-25 AND HARMONY
0700 PM FLASH FLOOD 4 SW FORT COLLINS 40.51N 105.12W
08/02/2007 LARIMER CO AMATEUR RADIO
WATER IN CURBS 3 INCHES RAIN PAST 20 MINUTES
0650 PM HEAVY RAIN 5 SSW FORT COLLINS 40.49N 105.10W
08/02/2007 M2.28 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
&&
JKLocal storm report, Aug 2, 9:08 PM MDT, 2 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
908 PM MDT THU AUG 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0902 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.51 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0850 PM HEAVY RAIN 3 SSW FORT COLLINS 40.52N 105.09W
08/02/2007 M5.31 INCH LARIMER CO TRAINED SPOTTER
PAST 2 1/2 HOURS
0845 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.55 INCH LARIMER CO TRAINED SPOTTER
0845 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
2 FEET WATER OVER THE ROAD AT ELIZABETH AND SHIELDS
0838 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.96 INCH LARIMER CO MESONET
0830 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.92 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0825 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SEVERAL BASEMENTS FLOODED CAMPUS WEST COLORADO STATE
UNIVERSITY 2.00 INCHES RAIN SO FAR
0825 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 E2.44 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
0825 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.00 INCH LARIMER CO AMATEUR RADIO
PAST HOUR
0815 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO TRAINED SPOTTER
WATER OVER ROAD AT FOSSIL CREEK AND HIGHWAY 287
0810 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.20 INCH LARIMER CO TRAINED SPOTTER
PAST HOUR
0745 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.50 INCH LARIMER CO AMATEUR RADIO
PAST 30 MINUTES AT 1-25 AND HARMONY
0700 PM FLASH FLOOD 4 SW FORT COLLINS 40.51N 105.12W
08/02/2007 LARIMER CO AMATEUR RADIO
WATER IN CURBS 3 INCHES RAIN PAST 20 MINUTES
0650 PM HEAVY RAIN 5 SSW FORT COLLINS 40.49N 105.10W
08/02/2007 M2.28 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
&&
JKLocal storm report, Aug 2, 9:22 PM MDT, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
922 PM MDT THU AUG 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0902 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.51 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0900 PM HEAVY RAIN 3 SW FORT COLLINS 40.52N 105.11W
08/02/2007 M3.10 INCH LARIMER CO TRAINED SPOTTER
PAST 135 MINUTES
0900 PM HEAVY RAIN 4 SE FORT COLLINS 40.51N 105.01W
08/02/2007 M2.18 INCH LARIMER CO TRAINED SPOTTER
PAST 135 MINUTES
0850 PM HEAVY RAIN 3 SSW FORT COLLINS 40.52N 105.09W
08/02/2007 M5.31 INCH LARIMER CO TRAINED SPOTTER
PAST 2 1/2 HOURS
0845 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.55 INCH LARIMER CO TRAINED SPOTTER
0845 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
2 FEET WATER OVER THE ROAD AT ELIZABETH AND SHIELDS
0838 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.96 INCH LARIMER CO MESONET
0830 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.92 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0825 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SEVERAL BASEMENTS FLOODED CAMPUS WEST COLORADO STATE
UNIVERSITY 2.00 INCHES RAIN SO FAR
0825 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 E2.44 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
0825 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.00 INCH LARIMER CO AMATEUR RADIO
PAST HOUR
0815 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO TRAINED SPOTTER
WATER OVER ROAD AT FOSSIL CREEK AND HIGHWAY 287
0810 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.20 INCH LARIMER CO TRAINED SPOTTER
PAST HOUR
0745 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.50 INCH LARIMER CO AMATEUR RADIO
PAST 30 MINUTES AT 1-25 AND HARMONY
0700 PM FLASH FLOOD 4 SW FORT COLLINS 40.51N 105.12W
08/02/2007 LARIMER CO AMATEUR RADIO
WATER IN CURBS 3 INCHES RAIN PAST 20 MINUTES
0650 PM HEAVY RAIN 5 SSW FORT COLLINS 40.49N 105.10W
08/02/2007 M2.28 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
&&
JKLocal storm report, Aug 2, 9:32 PM MDT, 1 hour 41 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
932 PM MDT THU AUG 02 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0930 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SPRING CREEK EAST OF LEMAY OUT OF ITS BANKS
0920 PM HEAVY RAIN 4 NW WELLINGTON 40.74N 105.06W
08/02/2007 M2.00 INCH LARIMER CO TRAINED SPOTTER
PAST TWO AND ONE HALF HOURS
0902 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.51 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0900 PM HEAVY RAIN 3 SW FORT COLLINS 40.52N 105.11W
08/02/2007 M3.10 INCH LARIMER CO TRAINED SPOTTER
PAST 135 MINUTES
0900 PM HEAVY RAIN 4 SE FORT COLLINS 40.51N 105.01W
08/02/2007 M2.18 INCH LARIMER CO TRAINED SPOTTER
PAST 135 MINUTES
0850 PM HEAVY RAIN 3 SSW FORT COLLINS 40.52N 105.09W
08/02/2007 M5.31 INCH LARIMER CO TRAINED SPOTTER
PAST 2 1/2 HOURS
0845 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 M2.55 INCH LARIMER CO TRAINED SPOTTER
0845 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
2 FEET WATER OVER THE ROAD AT ELIZABETH AND SHIELDS
0838 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.96 INCH LARIMER CO MESONET
0830 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.92 INCH LARIMER CO TRAINED SPOTTER
PAST 2 HOURS
0825 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO AMATEUR RADIO
SEVERAL BASEMENTS FLOODED CAMPUS WEST COLORADO STATE
UNIVERSITY 2.00 INCHES RAIN SO FAR
0825 PM HEAVY RAIN 5 S FORT COLLINS 40.48N 105.07W
08/02/2007 E2.44 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
0825 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M4.00 INCH LARIMER CO AMATEUR RADIO
PAST HOUR
0815 PM FLASH FLOOD FORT COLLINS 40.56N 105.07W
08/02/2007 LARIMER CO TRAINED SPOTTER
WATER OVER ROAD AT FOSSIL CREEK AND HIGHWAY 287
0810 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.20 INCH LARIMER CO TRAINED SPOTTER
PAST HOUR
0745 PM HEAVY RAIN FORT COLLINS 40.56N 105.07W
08/02/2007 M2.50 INCH LARIMER CO AMATEUR RADIO
PAST 30 MINUTES AT 1-25 AND HARMONY
0700 PM FLASH FLOOD 4 SW FORT COLLINS 40.51N 105.12W
08/02/2007 LARIMER CO AMATEUR RADIO
WATER IN CURBS 3 INCHES RAIN PAST 20 MINUTES
0650 PM HEAVY RAIN 5 SSW FORT COLLINS 40.49N 105.10W
08/02/2007 M2.28 INCH LARIMER CO TRAINED SPOTTER
PAST 75 MINUTES
&&
JKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 7:17 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 2, 8:43 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 3, 11:00 AM MDT | Flash Flood Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 6 more | 10 hr |
Nearby
Flash Flood Warnings in Colorado, 2007Every flash flood warning in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.