A slow moving cold front moved through southwest Wyoming, with gusty southerly winds ahead of the front.
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.
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.
The episode as NWS SLC wrote it up.
A slow moving cold front moved through southwest Wyoming, with gusty southerly winds ahead of the front.
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 Apr 28, 7:58 PM MST, 5 hours 12 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 858 PM MDT TUE APR 28 2009 .SYNOPSIS...A SERIES OF WEAK WEATHER DISTURBANCES WILL BRUSH NORTHERN UTAH THROUGH THURSDAY. HIGH PRESSURE ALOFT WILL BUILD ACROSS THE REGION FRIDAY AHEAD OF A MOIST BUT WEAK PACIFIC WEATHER SYSTEM OVER THE COMING WEEKEND. && .DISCUSSION...ENHANCED CONVECTION ASSOCIATED WITH THE VORTICITY MAX/JET MAXIMUM ACROSS NRN UTAH IS MOVING QUICKLY TO THE NE THIS EVENING. LOOKING AT SHOWERS/ISOLATED STORMS ACROSS FAR NRN UTAH/SW WYOMING THROUGH LATE EVENING...THEN GRADUAL CLEARING LATE TONIGHT. TEMPS WILL BE ON THE COOL SIDE OVERNIGHT ACROSS THE FAR NORTH AS A SHALLOW SURGE OF COLDER AIR ASSOCIATED WITH THE PASSING VORTICITY MAX SURGES JUST SOUTH OF THE METRO AREA. PATTERN LOOKS TO BE STATIC THE NEXT COUPLE OF DAYS AS THE UPPER LOW ACROSS THE PACIFIC NW REMAINS NEARLY STATIONARY. A SERIES OF SHORTWAVES EJECTING OUT OF THIS LOW WILL CLIP NRN UTAH...PRODUCING PERIODIC CONVECTIVE PRECIP ACROSS THE FAR NORTH INTO WEDNESDAY NIGHT. THE LOW WILL DECAY EARLY THURSDAY...THEN RIPPLE EAST THROUGH THE NRN ROCKIES/NRN GREAT BASIN THURSDAY AFTERNOON. RIDGING FRIDAY WILL BE SHORT-LIVED AS THE NEXT PACIFIC SYSTEM MOVES INTO THE GREAT BASIN EARLY IN THE WEEKEND. THE GFS AND ECMWF ARE HAVING TROUBLE LOCKING IN ON A SPECIFIC SOLUTIONS...BUT DO INDICATE THAT SOME PRECIP WILL MOVE INTO THE AREA DURING THE WEEKEND. WILL TAKE A LOOK AT THE NRN ZONES TO SEE IF AN UPDATE TO REDUCE PRECIP IS NEEDED. THE SRN/CNTRL UTAH FORECAST LOOKS GOOD FOR NOW. && .AVIATION...NORTH WINDS ARE EXPECTED TO CONTINUE AT THE SLC TERMINAL BEFORE SWITCHING TO SOUTHEAST BETWEEN 09-11Z TONIGHT. CEILINGS ARE EXPECTED TO REMAIN NEAR 6000 FEET AGL THROUGH 10Z...BEFORE LIFTING ABOVE 7000 FEET AGL. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && PUBLIC...CONGER AVIATION...KRUSE FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
940 PM MDT TUE APR 28 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM NON-TSTM WND GST PARK CITY 40.61N 111.53W
04/28/2009 M61 MPH SUMMIT UT MESONET
DV - EMPIRE PK - 9570 FT
0708 PM NON-TSTM WND GST MONROE 38.63N 112.06W
04/28/2009 M63 MPH SEVIER UT MESONET
SIGNAL PEAK - 8792 FT
0730 PM NON-TSTM WND GST WAHSATCH 41.20N 111.11W
04/28/2009 M61 MPH SUMMIT UT MESONET
WASATCH HILLS - 6939 FT
0750 PM NON-TSTM WND GST RAGEN 41.29N 110.77W
04/28/2009 M59 MPH UINTA WY MESONET
I-80 EAST OF EVANSTON - 7579 FT
0810 PM NON-TSTM WND GST EVANSTON 41.27N 111.03W
04/28/2009 M68 MPH UINTA WY MESONET
&&The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A 68 mph wind gust was recorded at the Evanston Burns Field station.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2009Every state in 2009This day in weather historyWarnings in Wyoming, April 2009
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: 167691.