July 16th featured very high dew points in the mid 70s and CAPE values over 3000 j/kg. Shear was modest, so we weren’t certain we would get supercells. An early day supercell over eastern Nebraska laid out an outflow boundary over central Nebraska from Valentine southeast towards Grand Island. Storms formed along this boundary and moved east into the cool stable air and died. Later in the afternoon a cluster of storms formed on the boundary and the tail end storm anchored. It immediately started spinning and became a formidable supercell! As the storm right turned on the boundary and moved towards Burwell, it was rotating strongly and was extremely electrified! I thought it had a decent chance to produce a tornado, but it did not. A couple of weak funnels did form. As the storm continued southeast, it became tornado warned with strong rotation continuing. Another supercell formed west of this and rotated down towards I-80 near Gibbon and also became tornado warned. The structure was incredible with one of the best shelf clouds I’ve seen in years! As the storms pushed south of I-80, they gusted out and became a wind machine. A great day with far better results than we were expecting! Enjoy the pics!
We weren’t expecting much this day. Modest moisture, CAPE and shear were present, thus we were hoping for a few pulse storms. Thunderstorms formed over the higher terrain of northeast New Mexico and collapsed. Their outflow pushed east and helped developed additional storms on the south side of the Raton Mesa. These storms congealed into a cluster of high wind producing severe storms in far eastern parts of the state and eventually moved into northwest Texas panhandle. Lightning was decent as well.
Southeast Montana was the target this day for what appeared to be a decent chance of high based supercells. Great shear was in place, but limited moisture and instability would temper the threat of significant severe weather. Nonetheless, storms formed off the Big Horn mountains and moved east and intensified. Hail the size of half dollars and winds to 70mph occurred from these supercells. Structure was typical for high based storms and one can wonder only what if there would have been better moisture and instability. It was still a fun day and we at least had severe storms.
July 6th took us to eastern Colorado. Good moisture and instability, along with modest shear and upslope flow into the Palmer Divide would set the stage for supercells and multicells. One such storm formed just west of Limon and right turned southeast towards Hugo. As it did, the structure improved as severe thunderstorm warnings were issued for golfball sized hail. As it moved further east, it became better organized and was tornado warned. It didn’t produce one, but you could clearly see the rotation in the storms updraft. As it moved furth east towards Eads, it encountered drier are and eventually weakened. Pretty storm, and the eastern plains of Colorado certainly needed all the moisture it can get! Enjoy the photos!
Due to a very poor weather pattern across the plains of the US, we took our Photo Tour #3 group to Arizona to photograph the monsoon thunderstorms. We had some AMAZING success in northern Arizona, capturing severe storms near Winslow and the Grand Canyon. On the final day of the tour, July 1st, we ended up in southeast Colorado on a supercell that came out of the Sangre de Cristo moutains near Aguilar, Colorado and produced golfball sized hail and high winds. A testament to the fact that Silver Lining Tours will get you ANYWHERE there are severe storms and photogenic storms! Enjoy the pics!
July 14th had it all. Boundary, great moisture, instability and good low level shear. We blasted from Pierre, SD to central Iowa as storms formed and became severe and tornado warned. Several tornadoes did occur in central and eastern Iowa with one particular tornado we just missed by 15 minutes being the most intense near Lake City. Frustrating day to say the least, but we still managed some great supercells and a tornado late in the day. Moral of the story is to NEVER give up until storms are weakening and loss of heating reduce instability.
Conditions finally became conducive to severe weather again late on July 13th. Upslope flow into north central Wyoming off the Big Horn mountains would generate severe thunderstorms. Adequate wind shear, instability and moisture would be present for a couple of supercells. One such storm formed just east of Sheridan and tracked southeast to Gillette. It produced tennisball sized hail, high winds and had decent structure. As evening arrived, a complex of storms formed and extended all the way out to near Pierre, SD where we arrived at our hotel at 2am! The next day would take us to Iowa for a potent event! Enjoy the pics!
The final tour day of our 2020 season brought us into southeast Wyoming to play in the upslope flow into the Laramie Range. Several storms formed in this region and tracked southeast towards Cheyenne and points east. Decent moisture and instability, coupled with moderate shear, would help storms become organized and develop into some pretty structured supercells. Our first storm, north of Chugwater, had nice structure and produced a lot of hail. It spun hard a couple times and at one time we thought it had some tornado potential. It get really messy so we decided to target a new cell southeast of Cheyenne near Carpenter. This storm was a treat to watch! We found an old abandoned car that became the centerpiece of our photos/video as the cell slowly dropped towards us. The storm’s structure was that of the classic “stack of plates” and was fun just to watch as it drifted towards us. Both of the storms we chased this day had great structure and were very photogenic. Enjoy the pics!
July 19th was a spectacular day! Good moisture, high instability, good wind shear and a boundary along the Wyoming/Montana border would set the stage for intense supercell development. One such storm formed northwest of Devil’s Tower and drifted southeast. As it crossed Devil’s Tower we had quite the lightning show! I managed to capture a bolt hitting the top of the tower! As the storm moved southeast near Sundance it became extremely electrified producing a CG every 3-4 seconds! At one point, it had an appearance like it was ready to produce a tornado. We lost visibility in the hills and could not confirm one way or another if it did. Later, a second supercell tracked southeast from near Buffalo, WY down to Lusk, WY. This storm constantly spun hard, had pretty structure and was also tornado warned numerous times! It’s structure was top notch and had various rotating wall clouds throughout it’s life. But, as continued to be the theme for 2020, storms had great structure but just couldn’t produce significant tornadoes. Overall it was my favorite day in July for chasing, and one we captured some incredible photos! Enjoy!
July 14th kept us in Colorado to chase off the Palmer Divide into southeast Colorado. A sagging cold front we push moisture westward into the Palmer Divide, causing storms to develop by mid afternoon. Those storms produced copious amounts of hail, but became undercut by outlfow and died. The boundary pushed south as more storms formed along it east of Pueblo. Near the town of Sugar City, one storm formed and spun hard. It quickly became tornado warned and stayed that way for a few hours. A couple of times, it had the look like it wanted to drop a tornado, but it never did. As it merged with numerous storms west of Lamar, the storm interaction with others caused it to produce a quick 1 minute spin up. The structure with this supercell was quite nice. It was also quite electrified! Eventually this cluster of storms pushed into western Kansas and weakened as we followed it east to Garden City. Great day! Beautiful storm and it certainly tried to get very interesting! Please click on a pic for a larger image. Enjoy!