A very wet system moving through much of Southern Manitoba had been expected to spare Brandon its worst. That changed a little over a half hour ago with Environment and Climate Change Canada (ECCC) having extended a rainfall warning already in place for other parts of the province to now include Brandon.
According to the warning, locations within the effected area of Southern Manitoba will see heaviest rain this evening before tapering off towards morning.
Unofficial totals with eBrandon’s rain gauges have recorded 6.3mm and 6.7mm respectively so far at points in Brandon’s South and West Ends respectively as of 5pm Tuesday. The text of the warning has some areas within Southern Manitoba seeing as much as 50mm by the time all is said and done on Wednesday with the current forecast for Brandon calling for 50mm tonight.
According to ECCC data the record for most rainfall on this day is 23.2mm in 2009 and is 26.1mm on Wednesday (1983). It’s not out of the realm of possibility that depending on when rain falls both records could be broken with this same system.
The full text of the warning can be seen at https://weather.gc.ca/warnings/report_e.html?mb7
You can monitor the progression of the rain system on radar at https://weather.gc.ca/radar/index_e.html?id=xfw