Alert archive / Utah / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 12, NWS Grand Junction, CO

June 6, 2015San Juan County, Utah

NWS Grand Junction, CO issued this severe thunderstorm warning at Jun 6, 2015, 3:11 PM MDT for San Juan County, Utah. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 6, 2015, 3:11 PM MDT (21:11 UTC)
Expired
Jun 6, 2015, 3:30 PM MDT
In force
19 min
Issued by
NWS Grand Junction, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County San Juan County, UT

The radar

The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 21:10 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 forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jun 6, 11:52 AM MDT, 3 hours 19 minutes earlier.

Area forecast discussion, Jun 6, 11:52 AM MDT, 3 hours 19 minutes before
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Hazardous weather outlook, Jun 6, 7:31 AM MDT, 7 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
731 AM MDT SAT JUN 6 2015

COZ001>014-017>023-UTZ022>025-027>029-071345-
LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN-
ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS-
UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR-
CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS-
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS-
CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN-
WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS-
UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-
NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS-
PARADOX VALLEY/LOWER DOLORES RIVER-
FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN-
SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS-
EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT-
LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES-
731 AM MDT SAT JUN 6 2015

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED STRONG TO SEVERE STORMS ARE POSSIBLE IN THE FOUR
CORNERS REGION THIS AFTERNOON WITH A THREAT OF HAIL...STRONG
WINDS...AND A POSSIBLE FUNNEL CLOUD OR TORNADO. WIDESPREAD RAIN
SHOWERS WITH SCATTERED EMBEDDED THUNDERSTORMS WILL AFFECT MUCH OF
EASTERN UTAH AND WESTERN COLORADO TODAY AND TONIGHT. HEAVY RAIN
MAY CAUSE SMALL STREAMS AND WASHES TO RISE RAPIDLY...AND DIRT OR
UNIMPROVED ROADS IN RURAL AREAS MAY BECOME IMPASSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SHOWERS AND THUNDERSTORMS WILL DECREASE SUNDAY.

DRIER AIR IS EXPECTED MONDAY AND TUESDAY THEN ANOTHER STORM WILL
MOVE THROUGH THE AREA WEDNESDAY THROUGH FRIDAY.

A FLASH FLOOD WATCH HAS BEEN ISSUED FOR THE WEST SALT CREEK
LANDSLIDE IN NORTH CENTRAL MESA COUNTY UNTIL MONDAY AFTERNOON...
AS PEOPLE IN LOW LYING AREAS BELOW THE LANDSLIDE SHOULD STAY
ALERT TO CHANGING CONDITIONS.

A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR ALL OF SOUTHEAST UTAH
AND SOUTHWEST COLORADO THROUGH SUNDAY EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY LATE THIS MORNING THROUGH THIS
EVENING OVER EASTERN UTAH AND WESTERN COLORADO.

In the hours before

Special weather statement, Jun 6, 9:57 AM MDT, 5 hours 14 minutes before
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Local storm report, Jun 6, 10:34 AM MDT, 4 hours 37 minutes before
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Local storm report, Jun 6, 12:52 PM MDT, 2 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1252 PM MDT SAT JUN 06 2015

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

1039 AM     HEAVY RAIN       VALLEY OF THE GODS      37.27N 109.92W
06/06/2015  M0.92 INCH       SAN JUAN           UT   TRAINED SPOTTER

            RAINFALL SINCE MIDNIGHT OVER THE LAST 10 HOURS AS OF 10
            AM.

&&

EVENT NUMBER GJT1500788

MALEKSA
Special weather statement, Jun 6, 2:20 PM MDT, 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
220 PM MDT SAT JUN 6 2015

COZ019-062045-
SOUTHWEST SAN JUAN MOUNTAINS CO-
220 PM MDT SAT JUN 6 2015

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL ARCHULETA COUNTY
UNTIL 245 PM MDT...

AT 219 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 21
MILES SOUTHEAST OF WOLF CREEK PASS...OR 24 MILES NORTH OF CHAMA...
MOVING NORTHEAST AT 45 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL
ARCHULETA COUNTY.

LAT...LON 3713 10679 3728 10668 3723 10668 3719 10660
      3714 10659 3705 10652
TIME...MOT...LOC 2019Z 209DEG 38KT 3725 10655

JAM
Special weather statement, Jun 6, 2:28 PM MDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
228 PM MDT SAT JUN 6 2015

UTZ029-062100-
CANYONLANDS/NATURAL BRIDGES UT-
228 PM MDT SAT JUN 6 2015

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL SAN JUAN COUNTY
UNTIL 300 PM MDT...

AT 228 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13
MILES EAST OF TICABOO...OR 41 MILES NORTHWEST OF MEXICAN HAT...MOVING
NORTHEAST AT 30 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF WEST CENTRAL SAN
JUAN COUNTY.

LAT...LON 3745 11053 3762 11053 3762 11046 3764 11046
      3764 11044 3766 11044 3767 11038 3777 11038
      3777 11034 3781 11034 3758 11012 3744 11054
      3745 11054
TIME...MOT...LOC 2028Z 236DEG 28KT 3757 11044

JAM
Local storm report, Jun 6, 2:53 PM MDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
253 PM MDT SAT JUN 06 2015

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

0230 PM     HEAVY RAIN       2 NW ARRIOLA            37.46N 108.68W
06/06/2015  M1.23 INCH       MONTEZUMA          CO   TRAINED SPOTTER

            STORM TOTAL RAINFALL SO FAR SINCE YESTERDAY.

&&

EVENT NUMBER GJT1500789

MALEKSA

The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 6, 9:57 AM MDTSpecial Weather StatementGJTLa Plata33 min
Jun 6, 12:18 PM MDTRiver Flood AdvisoryGJTPitkin18 days
Jun 6, 2:07 PM MDTAreal Flood AdvisoryGJTArchuleta6 hr
Jun 6, 2:20 PM MDTSpecial Weather StatementGJTArchuleta25 min
Jun 6, 3:23 PM MDTSpecial Weather StatementGJT22 min
Jun 6, 3:31 PM MDTSpecial Weather StatementGJT29 min
Jun 6, 3:46 PM MDTSpecial Weather StatementGJTArchuleta44 min
Jun 6, 2:31 AM MDTAreal Flood AdvisoryGJTGrand6 hr
Jun 6, 8:31 AM MDTAreal Flood AdvisoryGJTGrand12 hr
Jun 6, 1:45 PM MDTSevere Thunderstorm WarningGJTSan Juan30 min
Jun 6, 2:28 PM MDTSpecial Weather StatementGJTSan Juan32 min
Jun 6, 3:34 PM MDTSevere Thunderstorm WarningGJTSan Juan15 min
Jun 6, 4:19 PM MDTSpecial Weather StatementGJTSan Juan41 min
Jun 6, 5:13 PM MDTAreal Flood AdvisoryGJTSan Juan6 hr
Jun 6, 5:18 PM MDTSpecial Weather StatementGJTSan Juan42 min
Jun 6, 5:59 PM MDTSpecial Weather StatementGJTSan Juan46 min

Nearby

Severe Thunderstorm Warnings in Utah, 2015Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.