Overview
From Saturday, June 16 through early morning Tuesday, June 19, a slow-moving upper-level low pressure system across the Northwest United States coupled with anomalously high moisture (precipitable water values upwards of 150-175% of normal) led to a long-duration rainfall event across northeastern Wyoming and western South Dakota. Much of this moisture was advected into the area via the remnants of Hurricane Bud (thanks Bud-dy!) in the Pacific. Many places saw more rainfall in these three days than they had seen for the rest of June.
In addition to the widespread rainfall, ample cloud cover helped keep much of the region much cooler than normal with highs in the 50s and 60s. The temperature at the NWS Rapid City office only deviated by 6 degrees from midnight June 17 through 6 AM June 19 -- with a high of 57 degrees and a low of 51 in that time frame. Only once the low clouds broke and the sun made it's presence known (albeit briefly) through after 830 AM MDT did the temperature finally begin to climb out of the 50s in downtown Rapid City.
See images below for temperatures at NWS Rapid City June 17-19.
Rainfall
Rain Reports
Rain amounts (inches)
AMOUNT LOCATION ST COUNTY TIME
------ ----------------------- -- -------------- -------
4.10 16 SSE MISSION SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.94 9 ESE SAINT FRANCIS SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.90 2 WNW SPRING CREEK SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.87 7 E LAKEVIEW SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
3.31 4 W DOWNTOWN RAPID CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.30 1 NNW DOWNTOWN RAPID CI SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.23 4 NW DOWNTOWN RAPID CIT SD PENNINGTON 0600 AM
STORM TOTAL RAINFALL 6/16/-6/19
3.10 2 WSW HAMILL SD TRIPP 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
3.07 2 SSW ARDMORE SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.04 3 N DOWNTOWN RAPID CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.04 6 W NEW UNDERWOOD SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
3.00 HERMOSA SD CUSTER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.99 14 NNE MARTIN SD BENNETT 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.99 5 W ELLSWORTH AFB SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.97 3 NNE JOHNSON SIDING SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.96 2 SW DOWNTOWN NEWCASTLE WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.96 1 NE DOWNTOWN RAPID CIT SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.95 2 SW NORRIS SD MELLETTE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.87 1 NNW PIEDMONT SD MEADE 0745 AM
STORM TOTAL RAINFALL 6/16-6/19
2.83 6 SSW MYSTIC SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.79 21 SE MISSION SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.74 4 SE NEMO SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.74 3 SSE HISEGA SD PENNINGTON 0700 AM
2.72 6 NNE WHITEWOOD SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.72 1 N HISEGA SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.72 4 S HILL CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.66 2 SW DOWNTOWN RAPID CIT SD PENNINGTON 0600 AM
STORM TOTAL RAINFALL 6/16-6/19
2.63 3 SSE HILL CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.60 2 SW HISEGA SD PENNINGTON 0700 AM
2.59 1 WSW DOWNTOWN NEWCASTL WY WESTON 0700 AM
2.56 11 NE MORRISEY WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.56 4 NNE SUMMERSET SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.55 8 S SAINT FRANCIS SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.53 1 ESE PACTOLA RESERVOIR SD PENNINGTON 0630 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.52 10 NNW WINNER SD TRIPP 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.50 2 E DOWNTOWN RAPID CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.49 4 E DOWNTOWN RAPID CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.49 1 WSW SILVER CITY SD PENNINGTON 0700 AM
2.48 4 S HILL CITY SD PENNINGTON 0700 AM
2.47 3 W SCENIC SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.46 5 NE HISEGA SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.46 1 E DOWNTOWN RAPID CITY SD PENNINGTON 0600 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.43 7 N WOOD SD MELLETTE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.42 3 NE NORRIS SD MELLETTE 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.40 3 NE HISEGA SD PENNINGTON 0700 AM
2.40 TILFORD SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.35 3 E HISEGA SD PENNINGTON 0700 AM
2.33 2 ENE EDGEMONT SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.32 EDGEMONT SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/17 - 6/19
2.32 1 NNE EDGEMONT SD FALL RIVER 0600 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.31 5 NW DOWNTOWN RAPID CIT SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.31 1 W HISEGA SD PENNINGTON 0700 AM
2.28 HILL CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.27 2 NW CENTRAL CITY SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.24 7 WSW FOLSOM SD CUSTER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.23 3 SW HILL CITY SD PENNINGTON 1011 AM
2.22 7 NE SMITHWICK SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.21 2 NE BOX ELDER SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.20 3 WNW KADOKA SD JACKSON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.18 7 NW CEDAR BUTTE SD MELLETTE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.17 1 NNE EDGEMONT SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.17 OELRICHS SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.17 ORAL SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.16 2 S PACTOLA RESERVOIR SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.15 3 N HAYWARD SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.15 7 NNE ELLSWORTH AFB SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.12 2 NNW MOUNT RUSHMORE SD PENNINGTON 0700 AM
2.10 5 NW SWETT SD BENNETT 0750 AM
STORM TOTAL RAINFALL 6/16-6/19
2.09 1 N IDEAL SD TRIPP 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.08 JOHNSON SIDING SD PENNINGTON 0700 AM
2.06 1 ESE MOUNT RUSHMORE SD PENNINGTON 0700 AM
2.03 19 SW UPTON WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.02 9 WNW FAIRBURN SD CUSTER 0700 AM
2.02 4 W DOWNTOWN HOT SPRING SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
2.01 7 ENE OSAGE WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
2.01 LEAD SD LAWRENCE 0400 PM
STORM TOTAL RAINFALL 6/16/-6/18
2.00 3 SE SAINT ONGE SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.97 4 S DOWNTOWN RAPID CITY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.93 3 ESE CHEYENNE CROSSING SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.91 2 E DOWNTOWN STURGIS SD MEADE 0600 PM
STORM TOTAL RAINFALL 6/16/-6/18
1.88 3 E DOWNTOWN NEWCASTLE WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.88 1 SSE DOWNTOWN SPEARFIS SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.86 1 E WINNER SD TRIPP 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.82 3 ENE KYLE SD OGLALA LAKOTA 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.81 5 SE WHITEWOOD SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.80 DOWNTOWN HOT SPRINGS SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.78 5 SSW HILL CITY SD PENNINGTON 0700 AM
1.78 DOWNTOWN HOT SPRINGS SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.69 5 ESE ROSEBUD SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.68 14 SW BILLSBURG SD HAAKON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.68 EDGEMONT SD FALL RIVER 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.67 6 SSW FAIRPOINT SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.65 DOWNTOWN HOT SPRINGS SD FALL RIVER 0400 PM
STORM TOTAL RAINFALL 6/16/-6/18
1.55 12 S QUINN SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.54 3 SSW ROSEBUD SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.50 10 N OSAGE WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.49 6 ENE NEWELL SD BUTTE 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.49 6 NNW DOWNTOWN SPEARFIS SD LAWRENCE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.44 3 ENE NEWELL SD BUTTE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.42 3 W RAPID VALLEY SD PENNINGTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.41 6 SW BEULAH WY CROOK 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.39 1 NNE SUNDANCE WY CROOK 1200 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.34 4 ESE PINE HAVEN WY CROOK 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.33 1 N UPTON WY WESTON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.32 9 ENE WEWELA SD TRIPP 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.31 4 SSW OKREEK SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.31 8 SE MUD BUTTE SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.29 2 W OPAL SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.25 RED OWL SD MEADE 0700 AM
STORM TOTAL RAINFALL 6/16/-6/19
1.24 7 E PINE HAVEN WY CROOK 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.22 8 SSE BILLSBURG SD HAAKON 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.18 1 S DOWNTOWN BELLE FOUR SD BUTTE 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.09 19 SSE MISSION SD TODD 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
1.09 8 WNW USTA SD PERKINS 0700 AM
STORM TOTAL RAINFALL 6/16-6/19
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