Colorado, 2003

Hail in Colorado, September 10, 2003

September 10, 2003 · NWS GJT · 1 event in 1 county or zone

1 hail, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. 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

Open the live radar over this ground

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 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 Sep 10, 2:30 AM MST, 1 hour 30 minutes earlier.

Area forecast discussion, Sep 10, 2:30 AM MST, 1 hour 30 minutes before
WESTERN COLORADO & EASTERN UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
330 AM MDT WED SEP 10 2003

SHORT TERM (TODAY THROUGH TONIGHT)...
ACTIVE WEATHER AGAIN ON THE UPSWING. WILL BE SHIFTING EMPHASIS OF
THIS SHIFT INTO SEVERE WEATHER MODE ASAP SO WILL ATTEMPT TO BE
BRIEF. DEEP WINTER-LIKE STORM SYSTEM MOVING EASTWARD ACROSS THE
GREAT BASING OVERNIGHT. STRONG JET ALIGNED ALONG SOUTHERN CO WITH
IMPULSE BACK IN CENTRAL UTAH BEGINNING TO DRIVE COLD FRONT INTO
NORTHWEST CO AND EAST-CENTRAL UTAH. STRONG THUNDERSTORMS DEVELOPING
ALONG THIS FRONT INDICATIVE OF GOOD LOW LEVEL CONVERGENCE/UPPER
LEVEL DIVERGENCE COUPLET. STORMS MOVING RAPIDLY EASTWARD SO NOT AS
CONCERNED ABOUT FLOODING AS POSSIBLE SEVERE WEATHER AT THIS POINT.
DYNAMICS AND WIND FLOW NOT AS FAVORABLE SOUTH...SO WILL END FLASH
FLOOD WATCH AND SNOW ADVISORIES IN THAT REGION. AS THE FRONT PUSHES
EAST EXPECT NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS MUCH OF THE
REGION. THICKNESSES...DYNAMICS AND EXPERIENCE IN SAN JUAN MOUNTAINS
YESTERDAY POINTS TO SIGNIFICANT SNOW ACCUMULATIONS FOR THE CENTRAL
MOUNTAINS FROM LATE THIS MORNING INTO THE EVENING HOURS. GIVEN FIRST
SNOW EVENT WILL GO AHEAD WITH SNOW ADVISORY FROM MID-MORNING THROUGH
EARLY EVENING FOR THE FLAT TOPS...GORE...ELKHEAD AND PARK MOUNTAINS
AS WELL AS THE REMAINING CENTRAL MOUNTAINS FOR ELEVATIONS ABOVE 9500
FEET. LATER SHIFTS WILL NEED TO EVALUATE ANY ADDITIONS. TEMPERATURES
MUCH COOLER BEHIND THE FRONT.

TROF AXIS SLIDES EAST OF THE DIVIDE THIS EVENING WITH NORTHWEST FLOW
SETTLING IN. THIS SHOULD KEEP SNOW GOING FOR A LITTLE WHILE IN THE
NORTHERN MOUNTAINS. ELSEWHERE...SHOWERS WILL BECOME MORE SCATTERED
AS DYNAMICS WANE AND COLD CORE MOVES OVERHEAD.    NL

THURSDAY AND THURSDAY NIGHT...TROF MOVES SLOWLY EAST TO HIGH PLAINS
BY LATE THURSDAY. COOL NORTHWEST UNSTABLE FLOW WILL ALLOW SLIGHT
CHANCE SHOWERS OVER LOWER ELEVATIONS WITH CHANCE SHOWERS OVER HIGHER
TERRAIN. DRIER AIR MOVES INTO THE REGION BY THURSDAY NIGHT WITH
ONLY SLIGHT CHANCE POPS EXPECTED ACROSS THE NORTH. WITH SLIGHTLY
WARMER AIR ON THURSDAY...EXPECT SNOW LEVELS AROUND 8500 FEET.

FRIDAY AND SATURDAY...EXPECT FRIDAY TO BE AN IN BETWEEN DAY AS
NEXT SYSTEM APPROACHES FROM THE WEST. CLOUDS WILL INCREASE FROM
THE NORTH ON FRIDAY WITH SLIGHT CHANCE OF SHOWERS ACROSS NORTHERN
SECTIONS. MODELS CONTINUE TO INCREASE STRENGTH OF THE SYSTEM WITH
EACH SUCCESSIVE RUN. WITH GOOD DYNAMICS AND MOISTURE EXPECT SYSTEM TO
BRING CHANCE OF SHOWERS MOUNTAINS AND NORTH ON SATURDAY. SYSTEM
APPEARS TO BE QUITE COLD AND EXPECT SNOW TO BE A CONCERN OVER
MOUNTAIN LOCATIONS.  MPM

SUNDAY THROUGH TUESDAY...
TROF SLOWLY MOVES OUT OF THE AREA ON SUNDAY BRINGING DRIER AND
SLIGHTLY WARMER CONDITIONS. MAIN STORM TRACK FOR PACIFIC DISTURBANCES
WILL REMAIN NORTH OF THE CWA MONDAY IN MODERATE WNW FLOW ALOFT. ON
TUESDAY IT APPEARS THE WINDS ALOFT BECOME MORE NORTHWESTERLY
ACCORDING TO THE MRF. THIS BRINGS A SHORTWAVE TROUGH AND COLD FRONT
INTO THE NORTHERN HALF OF THE CWA ON TUESDAY. HAVE INCREASED POPS A
NOTCH IN THE NRN HALF OF THE CWA...DROPPED TEMPS A BIT AND INCREASED
RH AND SFC WINDS FOR TUE.

WEDNESDAY...COLD FRONT PASSES THROUGH ERN UT AND WRN CO AFFECTING
NORTHERN HALF OF AREA MOST. FLOW ALOFT BECOMES NW AND DRIES FROM NW
TO SE THROUGH THE DAY. TEMPS COOLS WITH THICKNESS DECREASES. CJC

.GJT...WINTER WEATHER ADVISORY FROM 900 AM TO 900 PM FOR CENTRAL AND
NORTHERN COLORADO MOUNTAINS.
Hazardous weather outlook, Sep 9, 3:53 PM MST, 12 hours 7 minutes before
COZ001>014-017>023-UTZ022>025-027>029-101200-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
453 PM MDT TUE SEP 9 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN COLORADO AND FOR
EASTERN UTAH

.DAY ONE...TODAY AND TONIGHT...

...FLASH FLOOD WATCH IN EFFECT THROUGH 9:00 AM MDT WEDNESDAY FOR
SOUTHEAST UTAH...AND WESTERN COLORADO...
...WINTER WEATHER EXPECTED ACROSS THE HIGH ELEVATIONS...

THUNDERSTORMS PRODUCING HEAVY RAIN...SOME RECURRING OVER THE
SAME LOCATION...WILL AFFECT EASTERN UTAH AND WESTERN COLORADO THROUGH
TONIGHT. THE HEAVIEST RAINFALL IS EXPECTED TO OCCUR ACROSS
SOUTHEAST UTAH AND SOUTHWEST COLORADO. THUNDERSTORMS WILL ALSO
PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING...GUSTY WINDS...AND
POSSIBLY SMALL HAIL.

IN ADDITION...COOLER AIR FILTERING INTO THE AREA WILL RESULT IN SNOW
ACCUMULATIONS OVER THE MOUNTAINS PEAKS AND HIGH ELEVATION PASSES.

A STRONG FALL-LIKE STORM SYSTEM WILL MOVE ACROSS THE GREAT BASIN
TONIGHT WITH MUCH OF ITS ENERGY FOCUSING ON EASTERN UTAH AND
WESTERN COLORADO.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

SNOWFALL IS EXPECTED TO CONTINUE IN THE HIGH MOUNTAIN AREAS
WEDNESDAY WITH SOME LOWERING OF SNOW LEVELS ACROSS THE NORTH. SNOW
WILL BE ACCOMPANIED BY THUNDER AT TIMES WHICH WILL LIKELY ENHANCE
ACCUMULATIONS. THE LOWER ELEVATIONS WILL CONTINUE TO SEE THUNDERSTORM
ACTIVITY WITH LOCALLY HEAVY RAIN...SMALL HAIL AND WIND GUSTS TO 30
MPH.

A MOIST AND UNSTABLE AIRMASS WILL REMAIN IN PLACE ACROSS THE REGION
AS THE STORM CENTER MOVES OVERHEAD ON WEDNESDAY.

DRIER CONDITIONS ARE EXPECTED IN THE WAKE OF THE STORM ON THURSDAY
AND FRIDAY...THOUGH ISOLATED THUNDERSTORMS ARE EXPECTED SATURDAY...
SUNDAY AND MONDAY...THOUGH MAINLY OVER HIGHER TERRAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS WILL NOT BE NEEDED TODAY OR TONIGHT. HOWEVER...
SPOTTERS ARE ENCOURAGED TO PHONE IN REPORTS OF STRONG WINDS...HAIL
AND HEAVY RAIN AS SOON AS POSSIBLE.

NL/TAL

In the hours before

Local storm report, Sep 9, 10:04 PM MST, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1104 PM MDT TUE SEP 09 2003

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1130 AM    23 S CORTEZ               CO   FLASH FLOOD
09/09/03   MONTEZUMA                      WATER AND DEBRIS FLOWS
                                          OVER HIGHWAY 491. 2 CARS
                                          STUCK.

1215 PM    9 N DURANGO               CO   FLASH FLOOD
09/09/03   LA PLATA                       COUNTY ROAD 250 CLOSED DUE
                                          TO MUD AND DEBRIS FLOWS.

1215 PM    7 N BAYFIELD              CO   FLASH FLOOD
09/09/03   LA PLATA                       COUNTY ROAD 501 CLOSED DUE
                                          TO MUD AND DEBRIS FLOWS.

0220 PM    17 S BLUFF                UT   FLASH FLOOD
09/09/03   SAN JUAN                       HIGHWAY 191 CLOSED BETWEEN
                                          MILE MARKER 3 AND 4 DUE TO
                                          DEBRIS FLOWS.

0600 PM    10 N DURANGO              CO   FLASH FLOOD
09/09/03   LA PLATA                       FLASH FLOODING - 9 FOOT
                                          DEEP WATER AND DEBRIS OVER
                                          COUNTY ROAD 250.

0600 PM    27 N DURANGO              CO   0.00 IN HEAVY SNOW
09/09/03   SAN JUAN                       4 INCHES OF SNOW AT
                                          DURANGO MOUNTAIN SKI RESORT

0800 PM    10 SE DURANGO             CO   0.00 IN HEAVY RAIN
09/09/03   LA PLATA                       3.58 INCHES OF RAIN - 12
                                          HOUR TOTAL

0730 PM    16 NE BLUFF               UT   FLASH FLOOD
09/09/03   SAN JUAN                       FLASH FLOODING WASHED AWAY
                                          VEHICLE ON COUNTY ROAD NEAR
                                          HATCH.

0730 PM    15 SE BLUFF               UT   FLASH FLOOD
09/09/03   SAN JUAN                       FLASH FLOODING AT WHITE
                                          MESA VILLAGE.

0800 PM    CORTEZ                    CO   FLASH FLOOD
09/09/03   MONTEZUMA                      1 FOOT DEEP WATER FLOWING
                                          DOWN CITY STREETS.

0805 PM    8 W CORTEZ                CO   AVALANCHE
09/09/03   MONTEZUMA                      FLASH FLOODING IN MCELMO
                                          CANYON. SEVERAL ROADS
                                          WASHED OUT.

0830 PM    SILVERTON                 CO   0.00 IN HEAVY SNOW
09/09/03   SAN JUAN                       4 INCHES OF SNOW. 10
                                          INCHES AT MOLAS PASS.

0645 PM    2 SE PLACERVILLE          CO   AVALANCHE
09/09/03   SAN MIGUEL                     MUD FLOW 10 INCHES DEEP
                                          AND 30 FEET LONG ACROSS
                                          HIGHWAY 145 AT MILE MARKER
                                          82.

1103 PM    DURANGO                   CO   FLASH FLOOD
09/09/03   LA PLATA

DJN
Local storm report, Sep 9, 10:04 PM MST, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1104 PM MDT TUE SEP 09 2003

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1130 AM    23 S CORTEZ               CO   FLASH FLOOD
09/09/03   MONTEZUMA                      WATER AND DEBRIS FLOWS
                                          OVER HIGHWAY 491. 2 CARS
                                          STUCK.

1215 PM    9 N DURANGO               CO   FLASH FLOOD
09/09/03   LA PLATA                       COUNTY ROAD 250 CLOSED DUE
                                          TO MUD AND DEBRIS FLOWS.

1215 PM    7 N BAYFIELD              CO   FLASH FLOOD
09/09/03   LA PLATA                       COUNTY ROAD 501 CLOSED DUE
                                          TO MUD AND DEBRIS FLOWS.

0220 PM    17 S BLUFF                UT   FLASH FLOOD
09/09/03   SAN JUAN                       HIGHWAY 191 CLOSED BETWEEN
                                          MILE MARKER 3 AND 4 DUE TO
                                          DEBRIS FLOWS.

0600 PM    10 N DURANGO              CO   FLASH FLOOD
09/09/03   LA PLATA                       FLASH FLOODING - 9 FOOT
                                          DEEP WATER AND DEBRIS OVER
                                          COUNTY ROAD 250.

0600 PM    27 N DURANGO              CO   SNOW
09/09/03   SAN JUAN                       4 INCHES OF SNOW AT
                                          DURANGO MOUNTAIN SKI RESORT

0800 PM    10 SE DURANGO             CO   3.58 INCHES OF RAIN -
09/09/03   LA PLATA                       12 HOUR TOTAL

0730 PM    16 NE BLUFF               UT   FLASH FLOOD
09/09/03   SAN JUAN                       FLASH FLOODING WASHED AWAY
                                          VEHICLE ON COUNTY ROAD
                                          NEAR HATCH.

0730 PM    15 SE BLUFF               UT   FLASH FLOOD
09/09/03   SAN JUAN                       FLASH FLOODING AT WHITE
                                          MESA VILLAGE.

0800 PM    CORTEZ                    CO   FLASH FLOOD
09/09/03   MONTEZUMA                      1 FOOT DEEP WATER FLOWING
                                          DOWN CITY STREETS.

0805 PM    8 W CORTEZ                CO   FLASH FLOOD
09/09/03   MONTEZUMA                      FLASH FLOODING IN
                                          MCELMO CANYON. SEVERAL
                                          ROADS WASHED OUT.

0830 PM    SILVERTON                 CO   SNOW
09/09/03   SAN JUAN                       4 INCHES OF SNOW.
                                          10 INCHES AT MOLAS PASS.

0645 PM    2 SE PLACERVILLE          CO   FLASH FLOOD
09/09/03   SAN MIGUEL                     MUD FLOW 10 INCHES DEEP
                                          AND 30 FEET LONG ACROSS
                                          HIGHWAY 145 AT MILE MARKER
                                          82.

0200 PM    9 W DURANGO               CO   FLASH FLOOD.
09/09/03   LA PLATA                       STREET FLOODING

0900 PM    CORTEZ                    CO   FLASH FLOOD.
09/09/03   MONTEZUMA                      MUNICPAL AIRPORT ROAD
                                          WASHED OUT.

DJN

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Mesa

When
September 10, 4:00 AM MST to 4:05 AM MST
Where
Mesa County, Redlands
Measured
0.88 in hail
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
39.050, -108.617

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Colorado in 2003Every state in 2003This day in weather historyWarnings in Colorado, September 2003

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: 5371595.