Damaging Winds in Utah, July 15, 2007

Name: Damaging Winds in Utah, July 15, 2007
Start: 2007-07-15T17:00
End: 2007-07-15T20:12
Location: Utah

July 15, 2007 · NWS SLC · 3 events in 3 counties and zones

The Wasatch Front took the brunt of some strong outflow winds. Other damaging storms occurred in Cedar City.

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

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

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 SLC wrote it up.

The Wasatch Front took the brunt of some strong outflow winds. Other damaging storms occurred in Cedar City.

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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Jul 15, 2:55 PM MST, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 15, 2:55 PM MST, 2 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
355 PM MDT SUN JUL 15 2007

.SYNOPSIS...HIGH PRESSURE ALOFT OVER UTAH WILL SLOWLY SHIFT EAST
THROUGH THE EARLY PART OF THE WEEK. MOISTURE WILL INCREASE OVER THE
AREA MONDAY AND TUESDAY BEFORE DRIER AIR PUSHES INTO WESTERN UTAH ON
WEDNESDAY.

&&

.DISCUSSION...HIGH PRESSURE REMAINS CENTERED OVER UTAH TODAY WITH
MOISTURE STREAMING INTO WESTERN UTAH FROM THE SOUTH. GOES-DERIVED
PRECIPITABLE WATER ALREADY UP TO AN INCH OR MORE OVER PORTIONS OF
WESTERN UTAH. THIS MOISTURE HAS ALLOWED CONVECTION TO QUICKLY
DEVELOP TODAY. EXPECT ISOLATED TO WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS TO CONTINUE OVER MOST OF THE CWA THROUGH THE EVENING
HOURS. TEMPERATURES REMAINED VERY HOT THROUGHOUT THE AREA TODAY
DESPITE INCREASED CLOUD COVER...AND WILL LIKELY STAY WARM OVERNIGHT
AS COOLING WILL BE LIMITED DUE TO CLOUD COVER.

AS THE RIDGE AXIS SHIFTS EAST TOMORROW...MOISTURE WILL SPREAD INTO
CENTRAL AND EASTERN UTAH...RESULTING IN INCREASED AREAL COVERAGE OF
SHOWERS AND THUNDERSTORMS. HAVE STAYED WITH THE IDEA OF MAX
TEMPERATURES BEING A COUPLE OF DEGREES COOLER TOMORROW DUE TO CLOUDS
AND SHOWERS. DRIER AIR STARTS WORKING ITS WAY INTO EXTREME WESTERN
UTAH ON TUESDAY WHILE AMPLE MOISTURE REMAINS OVER THE CENTRAL AND
EASTERN PORTIONS OF THE CWA. HOWEVER...A SHORTWAVE DISTURBANCE
MOVING ACROSS NORTHWEST UTAH ON TUESDAY SHOULD PROVIDE ENOUGH LIFT
TO GENERATE CONVECTION THERE DESPITE DECREASING MOISTURE.
THUS...HAVE KEPT MENTION OF POPS THROUGHOUT THE AREA FOR TUESDAY.

DRIER AIR PUSHES FARTHER EAST INTO THE AREA ON WEDNESDAY AND
THURSDAY...ALLOWING WESTERN UTAH TO DRY OUT. HOWEVER...INCREASING
WINDS MIDWEEK AHEAD OF AN APPROACHING TROUGH COULD RESULT IN FIRE
WEATHER CONCERNS FOR THE WESTERN VALLEYS. IN ADDITION...AS SKIES
CLEAR OUT...EXPECT TEMPERATURES TO INCREASE AGAIN TO RECORD OR
NEAR-RECORD VALUES. THE TROUGH WILL SLIDE NORTH OF THE AREA...AND
THE RIDGE IS STILL PROGGED BY THE GFS TO STRENGTHEN OVER COLORADO.
THIS POSITIONING OF THE HIGH COULD BRING A FORMIDABLE SURGE OF
MOISTURE INTO THE AREA FROM THE SOUTHEAST FOR NEXT WEEKEND.

&&

.AVIATION...A DELAYED LAKE BREEZE SUPPORTING NORTHWEST WINDS WILL
MAKE AN APPEARANCE AT THE KSLC TERMINAL LATE THIS AFTERNOON.  THE
NORTHWEST WINDS ARE EXPECTED TO REMAIN IN PLACE BETWEEN 2200 UTC AND
0300 UTC AROUND WHICH TIME SOUTHEAST WINDS WILL RETURN TO THE
TERMINAL. THERE IS A 10 PERCENT CHANCE THAT GUSTY ERRATIC WINDS
ASSOCIATED WITH THUNDERSTORM OUTFLOW WILL IMPACT THE TERMINAL LATE
THIS AFTERNOON AND EVENING.

&&

.FIRE WEATHER...WET THUNDERSTORMS ARE FORMING OVER MUCH OF THE AREA
TODAY. AIRMASS MOISTURE WILL INCREASE MONDAY AND TUESDAY WITH
WIDESPREAD...MOSTLY WET THUNDERSTORMS OCCURRING. THERE WILL STILL BE
LOCAL LIGHTNING STRIKES AWAY FROM AREAS OF RAINFALL IN THE LOWER
ELEVATIONS AND DESERTS. THE AIRMASS THEN DRIES FOR LATER IN THE WEEK
WITH DRY BREEZY CONDITIONS DEVELOPING ESPECIALLY FOR AREAS WEST OF
I-15.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.

&&

PUBLIC...CHENG
AVIATION...GRAHAM
FIRE WEATHER...GIBSON

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

The radar

The Salt Lake City radar (KMTX), 25 km away, was scanning. The volume nearest the first event began at 00:01 UTC.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Box Elder

When: July 15, 5:00 PM MST
Where: Box Elder County, 11.85 mi SSW of Saline
Measured: 57 kt (66 mph) estimated gust
Reported by: Mesonet
Coordinates: 41.070, -112.590

A 57 knot wind gust was measured at the Hat Island sensor.

Thunderstorm Wind, Salt Lake

When: July 15, 5:10 PM MST
Where: Salt Lake County, 2.1 mi E of (Slc)salt Lake City
Measured: 50 kt (58 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 40.780, -111.930

Broadcast media reported trees and a power pole down on a vehicle near 600S 180E in Salt Lake City. No damage report was available.

Thunderstorm Wind, Iron

When: July 15, 8:12 PM MST
Where: Iron County, 1.38 mi N of Cedar City
Measured: 54 kt (62 mph) estimated gust
Reported by: ASOS
Coordinates: 37.690, -113.070

A 54 knot wind gust was recorded at the Cedar City airport ASOS.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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

The same day elsewhere

Every storm in Utah in 2007 Every state in 2007 This day in weather history Warnings in Utah, July 2007

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: 52137, 52136, 52138.