Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >
Overview
Snow
Total accumulated snowfall during 48 hours preceding Nov. 19 |
Blizzard warning issued Nov. 18 at 3 AM CST | Winter storm warning issued Nov. 18 at 6 AM CST | Winter weather advisory issued Nov. 18 at 12 PM CST |
Radar:
NEXRAD reflectivity loop on Nov. 18 8-9 AM CST | NEXRAD reflectivity loop on Nov. 18 9:15-10:15 AM CST | NEXRAD reflectivity loop on Nov. 18 4:45-6 PM CST |
Environment
Moisture transport from the southern United States, a strong upper-level jet, a trough/low pressure, and high values of precipitable water created a favorable environment for blizzard conditions. These conditions led to heavy snowfall, low visibility, and high winds for most cities around the Twin Cities.
Nov. 18 National Weather Forecast | 850 mb RAP analysis loop | 700 mb RAP analysis loop |
500 mb RAP analysis loop | 300 mb 12Z map analysis for Nov. 18 showing strong winds | Precipitable water RAP analysis loop |
Montevideo visibility and wind observation graph | Redwood Falls visibility and wind observation graph | Springfield visibility and wind observation graph |
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