Live updates: July 4th storms move through SD/WY
9:30 p.m.: Severe thunderstorm warning continues into eastern Pennington and Meade County. Ping pong ball sized hail and 70 mph wind gusts are possible.
UPDATE 8:35 p.m. — A tornado warning has been issued to Pennington and Custer County, it’s in effect until 8:45 p.m. Additionally, a flash flood warning is in effect for the Meade County area, including Sturgis until 2:30 a.m.
8:06 p.m.: Severe thunderstorm warning now includes portions of Fall River, Custer, Pennington counties. Strong winds remains the big threat.
8:00 p.m.: 69 mph wind gust recorded in Newcastle about 7:55 p.m. This storm continues to bring strong winds and heavy rain to the area. Stay indoors!
7:49 p.m.: Severe Thunderstorm has been issued for Meade County to include Hereford and Enning. Strong winds and large hail are possible with this storm.
7:41 p.m.: 70+ mph winds are possible as a line of storms moves through Weston County. These storms are expected to move across the South Dakota border into portions of Pennington and Custer counties in the next hour and a half.
7:26 p.m.: Severe storms moving through Weston county could impact Newcastle and the western Black Hills by about 8:15 p.m. Winds in excess of 60 mph are possible with these storms.
Towards Rapid City and the northern Black Hills, shower and thunder activity are increasing over the coming hours.
7:15 p.m.: Tornado warning for Weston County has expired. Strong winds, large hail and heavy rain remain a concern. The severe thunderstorm warning for the Sturgis area remains in effect until 7:45 p.m. Flooding near Sturgis may become a concern. Spotters in the area have reported 0.80″ fell in roughly one hour in Sturgis.
Heavy rainfall is increasing in coverage near the Black Hills. Lightning and strong winds will be the primary concern over the coming hours.
7:07 p.m.: Tornado warning is in effect for portions of Weston County, Wyoming. Tornado is radar indicated at this time.
6:58 p.m.: Severe thunderstorm warning has been issued for portions of Lawrence and Meade county.
6:43 p.m.: A significant weather advisory is in effect until 7:45 p.m. for portions of Lawrence and Meade County as a strong storm pushes northeasterly. Small hail and gusty winds are possible with this storm.
6:15 p.m.: Tornado warning and severe thunderstorm warning for Johnson County, Wyoming has expired. Heavy rain will move toward the I-25 corridor.
6:03 p.m.: Tornado warning remains in effect until 6:30 p.m. for Johnson County in Wyoming. Radar indicates a tornado is possible in this area. Severe thunderstorm warnings have expired in Campbell County.
5:11 p.m.: A second severe thunderstorm warning has been issued in southern Campbell County. Two strong cells, capable of producing 1.75″ hail, are firing up in the southwestern most corner of the county and moving slowly east.
5:08 p.m.: A strong storm is approaching Belle Fourche. Hail and frequent, dangerous lightning will be associated with the storm. Expect impacts to begin in the next 20 minutes.
4:48 p.m.: Severe thunderstorm continues to track across Crook County and a new warning has been issued for southern Campbell County.
For Crook County, 1.25″ hail is still possible as the storm moves towards the east.
For Campbell County, a severe storm possible of producing 1.50″ hail is remaining relatively stationary as it sits on a boundary just west of Wright.
4:41 p.m.: Shower activity continues in the northern Black Hills from Sturgis towards Spearfish. Lightning and heavy rain is possible with these t’showers.
4:25 p.m.: Radar indicates hail roughly 1.50″ is possible with the storm in Crook County. Higher chance for hail looks to stay just north of the Devil’s Tower Monument and closer to Hulett. Warning remains in effect until 4:45 p.m.
4:03 p.m.: Reports of golf ball size hail roughly 6 miles west of Oshoto have been noted with this storm. This storm is expected to impact the Devil’s Tower, Hulett areas within half an hour.
3:47 p.m.: Severe thunderstorm warning has been issued for Crook County until 4:45 p.m. to include Hulett and the Devil’s Tower Monument. This storm is capable of very large hail, up to 2.50″, which is capable of causing damage to vehicles or buildings. On the radar image, there is a small spike apparent on the western side of the cell. That is a radar signature indicated very large hail.
3:37 p.m.: Isolated showers are developing near the Black Hills. Brief heavy rain may be associated with these. Expect these to strengthen and potentially bring cloud-to-ground lightning.
3:20 p.m.: Severe Thunderstorm Warning has been issued for Campbell County. Potential impacts include quarter sized hail and strong winds. Frequent lightning is also present with this storm. Warning remains in effect until 4:00 p.m. Areas new Hulett and Sundance, WY should be aware of this storm moving near in the next two hours. A severe thunderstorm WATCH remains in effect for much of the area until 10:00 p.m.