Lake Ontario's rename reaches all 122 forecast offices through the AWIPS code they share

Most of the work is in software and documents. Brian LaMarre, who retired as meteorologist-in-charge of the National Weather Service office in Tampa in April 2025 and now runs the consultancy Inspire Weather, pointed to layers of the Geographic Information System that draw the maps, and to the code for AWIPS, the system every one of the country's 122 forecast offices uses to receive data and transmit forecasts and warnings ^[8][12][13]. All 122 offices run AWIPS, so the change reaches every one of them ^[24]. Some of the editing happens at national headquarters, and some falls to the local offices ^[15].

Products and documents going back to the day President Trump signed the order also have to be changed ^[14]. Scientific American reported that within a week, official U.S. government weather maps will show lake effect snow reaching Syracuse from across Lake America ^[4]. Renamings of landmarks and geological features do happen, but they usually unfold over months and with planning, and former NWS employees told the magazine that the compressed schedule here pushes other work aside ^[6][7].

Many of the local offices are thin already, from long-standing hiring delays and the cuts the Department of Government Efficiency made at the start of Trump's second term ^[16]. Not every office has an Information Technology Officer, the person who would normally handle this, so some will have to lean on other offices for support, LaMarre said ^[17]. The rename means "there's naturally people that will be pulled away from their priorities," he said ^[10]. He does not expect a safety consequence. "Will this impact public safety? Absolutely not," he said ^[9]. "This is not an efficient use of taxpayer dollars" ^[11].

The article does not put a figure on the hours or the cost, and the NWS did not immediately respond to Scientific American's request for comment ^[5].

LaMarre expects Lake Ontario to keep appearing in federal documents and products for some time ^[18]. He expects habit to be the cause: a hastily typed social media alert with the old name, followed by complaints ^[18]. State agencies, TV stations and weather apps might not change the name at all, which he flagged as a source of public confusion, and the change could fray relationships with Canada's agencies ^[19][20]. Late night hosts made jokes about the order and some Canadian officials were indignant ^[26].

A previous executive order had already changed Gulf of Mexico to Gulf of America on government documents, and the lake is the second body of water federal weather products have had to relabel ^[3][25]. Chris Vagasky, who manages the Wisconsin Environmental Mesonet, said the pattern reaches the forecast itself: "Name changes like we've seen to the Gulf of Mexico and Lake Ontario threaten the ability of meteorologists to communicate the forecast with everybody" ^[21][22]. "Whichever name you choose, you're bound to upset someone who should be paying attention to the forecast instead of the name of a body of water. The forecast or the warning are the important things," he said ^[23].