Speaking of the Aurora Borealis (4 April 2011 post), here is one that happened in Lovecraft's youth. 21 July 1910.
Eva had some type of ecstatic spell and called for an end of the world. Her let down, or come-upance as it might be, came on the day of a mild aurora borealis. It is unknown if she was a member of "the jehovah witnesses", but maybe.
She would have been nearly identical in age to HPL.
Besides being a Lovecraftian, I'm a writer with numerous publications of short stories, poems, and essays: Down in The Cellar, The Open Vein, +Horror Library+ Vol. 1, Horror Mall, Blood Moon Rising, Dark Recesses, and more. I'm an associate editor at Miskatonic Books where I blog. A long time member of Horror Library's T-12 (now defunct) where over 120,000 readers enjoyed my stories. My HPL blog has garnered notoriety since 2006, has nearly 3000 posts on HPL facts - many not found elsewhere, and has accumulated over 215,000 reads. I have written an unpublished biography on Lin Carter, and currently writing a biography of Lovecraft's grandfather.