NOUS73 KGRR 192038 ADMGRR Alert Administrative Message National Weather Service Grand Rapids MI 436 PM EDT Tue Oct 19 2021 To: CRH GRR APX IWX CLE NCRFC ZOB From: WFO GRR Subject: WFO GRR providing Service Backup for WFO DTX WFO Detroit/Pontiac (DTX) has resumed full operational responsibility after service backup by WFO GRR (Grand Rapids). $$