HIMARS rocket strikes disrupt Russian operations

 ISW:

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Alarm in the Russian nationalist information space continues to grow as the pace of Russian operations slows in the face of successful Ukrainian high-mobility artillery rocket system (HIMARS) strikes on key Russian logistics and command-and-control nodes. Moscow Calling, a medium-sized Russian Telegram channel with 31,000 subscribers, posted an appraisal of the entirety of Russian operations in Ukraine since February 24.[6] Moscow Calling defined three distinct phases of the war—the first spanning from initial invasion to the withdrawal of Russian troops from Kyiv, Sumy, and Chernihiv Oblasts and the second spanning between that point and the introduction of Western-provided HIMARS.[7] Moscow Calling notably defined the arrival of HIMARS as a distinct turning point in the war and stated that previously provided Western weapons systems (such as NLAWs, Javelins, Stingers, and Bayraktars) did very little against Russian artillery bombardment (they are not designed or intended to counter artillery attack), but that HIMARS changed everything for Russian capabilities in Ukraine.[8] Moscow Calling strongly insinuated that recent Ukrainian strikes on Russian warehouses, communication hubs, and rear bases are having a devastating and potentially irreversible impact on the development of future Russian offensives.[9]

This post is consistent with previous reports from Western defense officials that Russian troops are being forced to engage in various HIMARS mitigation tactics on the battlefield, including camouflage measures and constantly changing the location of equipment groupings.[10] These mitigation tactics are impeding Russian forces from conducting the massive artillery barrages that they have widely employed over the course of the war, as evidenced by NASA Fire Information for Resource Management (FIRMS) data that shows consistently fewer observed heat anomalies over the frontline in Donbas since the introduction of HIMARS to Ukraine.
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These strikes have a similar effect as strategic air strikes by bombers that attack enemy support operations behind the front lines.  They also have the benefit of not endangering aircrews.  At this point, the Russians do have the ability to stop the attacks and are left with having to scramble to try to avoid the attacks.  I suspect that US satellites are capable of detecting mitigation efforts.