The Boundary Waters Derecho: July 4-5, 1999 in the USA and Canada

(Grand Forks) MVX base reflectivity loop
(Grand Forks) MVX base velocity loop
7:22AM CDT MVX base reflectivity 1/storm relative velocity 1 - Fargo Airport measured a 90mph wind gust at 7:30AM CDT.
(Duluth) DLH base reflectivity loop
(Duluth) DLH base velocity loop
1:02PM CDT DLH storm relative velocity 1 - Boundary Waters Canoe Area Damage
1:12PM CDT DLH base velocity 1- Boundary Waters Canoe Area Damage
(Marquette) MQT base reflectivity loop
(Marquette) MQT base reflectivity 248nmi at 5:18PMEDT
(Watertown/Montague) TYX base reflectivity 248nmi loop
(Burlington) CXX base reflectivity loop
(Burlington) CXX composite reflectivity 248nmi loop

Duluth NWS page on the Boundary Waters Derecho
SPC page on the Boundary Waters-Canadian Derecho