A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >
Overview
A Colorado Low impacted the area from the evening of November 9th to November 11th. This system brought freezing rain, sleet, snow, and wind to eastern North Dakota and west-central MinnesotaSnow/Ice
Due to warmer temperatures, many locations in our southern areas received freezing rain before the snow ever fell. This resulted in ice accumulations of around a quarter of an inch in the southern Red River Valley.
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| Snowfall map across the area (NOHRSC) |
Liquid equivalent precipitation (NOAA) |
Photos & Video
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| Ice on the eastbound I-94 camera in Fargo (NDDOT) |
UND Skycam at 2 PM on the 10th (UND ATMO SCI) |
Plowcam in Karlstad, MN (MNDOT) |
Highway camera in Warroad, MN. (MNDOT) |
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| Tree branches encased in ice, Fargo (NWS Employee) |
Sign covered in ice (NWS Employee) |
Video of conditions in Downtown Grand Forks (NWS Employee) |
Whiteout conditions on the ND-19 camera in Esmond, ND (NDDOT) |
Radar (Left to Right)
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Storm Reports
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| Snow Amounts PNS | Highest Wind Speeds PNS |
Environment
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| Figure 1: SFC Pressure from 0900 - 1800 11/10 | Figure 2: SFC Pressure from 2100 11/10 - 0600 11/11 | Figure 3: Dendritic Growth Zone Depth through 0600 11/11 |
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| Figure 4: SFC Temp & Dewpoint through 1800 11/10 | Figure 5: SFC Temp & Dewpoint through 0600 11/11 |
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| Figure 6: Counties with a Blizzard Warning for the event | Figure 7: Counties with a Winter Storm Warning for the event |
Additional Information
With the freezing rain in this system, we had many areas that lost power. We also had some thunder snow, due to higher CAPE in the area giving the snow showers some instability. Here's a look at power outage maps and the GIF of GOES Product GLM (Global Lightning) during the event. |
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| Power Outage Map showing people in the southern valley without power due to freezing rain | GLM showing lightning within the snow showers |
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