Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

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

Storms produced severe weather within portions of the southern Red River Valley into portions of northwest and west-central Minnesota on July 13, 2023. This included significant hail ranging from golf balls in the Fargo-Moorhead metro area to tennis and baseball sized hail southeast of Moorhead, MN, near Sabin into lakes country of west-central Minnesota. The main culprits for severe weather were supercell thunderstorms that tracked from eastern North Dakota into west-central Minnesota during the afternoon and evening hours bringing widespread large hail and occasionally damaging wind to many in their path.

Photos & Video
Radar
Storm Reports
Environment

Photos & Video

This video showing significant hail up to the size of baseballs was sent to the National Weather Service in Grand Forks, North Dakota, by Joshua Ebert of Downer, Minnesota (or around 14 miles southeast of Moorhead). This hail was produced by a supercell thunderstorm on July 13, 2023.


Baseball size hail near Sabin: Photo Courtesy of Joshua Ebert	2.5-3" hail near Sabin: Photo Courtesy of Joshua Ebert	Tennis ball size hail: Photo Courtesy of Joshua Ebert

SNOWBLOWER IN JULY?!?!

That’s one way to clean up hail ðŸ˜‚ðŸ˜‚ðŸ˜‚

â°: Thursday afternoon
ðŸ“: south Fargo near Doolittle’s
ðŸ“¸: Stacey IEricson pic.twitter.com/LXXkxFsxgB
— Lydia Blume (@LydiaBlumeWX) July 14, 2023

Zap! Robin Hall took a lightning strike this afternoon. @UNDATSC @UNDAerospace @UofNorthDakota pic.twitter.com/YyajFRD4fA
— Aaron Kennedy (@KennedyClouds) July 13, 2023

2" hail reported in the Downer, MN area ðŸ‘€
Captured by Nikki#VNLFirstAlert #FirstAlertWeatherDay @NWSGrandForks pic.twitter.com/GqA0N5ID4f
— Summer Schnellbach VNL (@SSchnellbach_WX) July 13, 2023

Report from Roseau.

Close to 1.5 inches of rain and a ton of hail. pic.twitter.com/fSo6IM5exL
— Tyler Landman (@Tyler_Landman) July 14, 2023

Best photos from today's quick chase near Mayville, ND. Storm rapidly intensified as it approached the town, producing a brief funnel south of town before merging with another storm and weakening. @NWSGrandForks #ndwx #mnwx #nikon #StormHour pic.twitter.com/jPvKP38l9N
— Weather Unrated (@WxUnrated) July 13, 2023

Vining, MN Hail!
Captured by Bruce Taylor#VNLFirstAlert #FirstAlertWeatherDay @NWSGrandForks pic.twitter.com/9fkcAkVlV1
— Summer Schnellbach VNL (@SSchnellbach_WX) July 14, 2023

Finding more damage near Lake Lida. @NWSGrandForks #VNLFirstAlert pic.twitter.com/znCUCFOsTz
— Eric Whitehill (@torchaser) July 14, 2023

Largest hailstone at location in south Fargo. @NWSGrandForks @ValleyNewsLive #VNLFirstAlert #ndwx #mnwx pic.twitter.com/vdyKnQXrTI
— Lisa Green (@LisaGreenVNL) July 13, 2023

â›ˆï¸ 1.5 inch hail in West Fargo from the earlier storm.

Credit: Deb Belcourt#ndwx pic.twitter.com/JZbR6KZ7af
— Dillon Vogt (@DillonvWx) July 13, 2023

âš¡ï¸ PING-PONG hail in Mapleton, ND from the storm today. #ndwx

ðŸ“¸: Aaron Helms pic.twitter.com/aeBdLFWnNO
— Dillon Vogt (@DillonvWx) July 13, 2023

Hail in Becker, MN #mnwx pic.twitter.com/KPuMtL9inb
— Laurie H. (@LaurieH272) July 14, 2023

ðŸ—£ï¸Just a reminder that parking under an underpass during a severe thunderstorm warning is a bad idea.

If in a vehicle during a severe storm, pull over to a sturdy shelter, and move to an interior room on the lowest floor of a building.

Image courtesy of NDDOT

#ndwx #mnwx pic.twitter.com/Wa7knbAX0t
— NWS Grand Forks (@NWSGrandForks) July 13, 2023

Radar

KMVX base reflectivity of severe storms in the southern Red River Valley into west-central Minnesota on July 13, 2023.

KMVX base reflectivity of severe storms in northwest Minnesota on July 13, 2023.

Storm Reports

View this webpage to see a list and map of storm reports across the contiguous United States from July 13, 2023.

Several supercell thunderstorms produced large hail across the area. Here is an image that shows radar estimated hail tracks from July 13, 2023, in eastern North Dakota into northwest and west-central Minnesota:

Public Information Statement
National Weather Service Grand Forks ND
910 PM CDT Fri Jul 14 2023

...HAIL REPORTS...

Location                     Size      Time/Date                            
2 WNW Downer                 2.75 in   0452 PM 07/13                        
1 E Mapleton                 2.00 in   0417 PM 07/13                        
1 N Mapleton                 2.00 in   0423 PM 07/13                        
3 NNW Downer                 2.00 in   0455 PM 07/13                        
4 NNE Clitherall             1.75 in   0625 PM 07/13                        
1 WNW West Fargo             1.50 in   0430 PM 07/13                        
3 ENE Clitherall             1.50 in   0646 PM 07/13                        
3 S Fargo                    1.25 in   0430 PM 07/13                        
4 NNW Pelican Rapids         1.25 in   0535 PM 07/13                        
Roseau                       1.25 in   0629 PM 07/13                        
3 NW Page                    1.00 in   0353 PM 07/13                        
4 NE Buffalo                 1.00 in   0435 PM 07/13                        
Casselton                    1.00 in   0445 PM 07/13                        
4 ESE Aneta                  1.00 in   0250 PM 07/13                        
East Grand Forks             1.00 in   0316 PM 07/13                        
East Grand Forks             1.00 in   0320 PM 07/13                        
Casselton                    1.00 in   0356 PM 07/13                        
3 SE West Fargo              1.00 in   0433 PM 07/13                        
3 SSW Fargo                  1.00 in   0450 PM 07/13                        
Roseau                       1.00 in   0627 PM 07/13                        
3 ENE Clitherall             1.00 in   0641 PM 07/13                        
Sabin                        0.88 in   0446 PM 07/13                        
4 ENE Luverne                0.75 in   0308 PM 07/13                        
4 SSW Fargo                  0.75 in   0426 PM 07/13                        
1 NW Grand Forks             0.50 in   0308 PM 07/13                        
4 SSE West Fargo             0.50 in   0433 PM 07/13                        
1 WNW Grand Forks            0.25 in   0308 PM 07/13                        

...HIGHEST WIND REPORTS...

Location                     Speed     Time/Date                            
3 NNE Ashby                  73 MPH    0615 PM 07/13                        
2 E Mayville                 59 MPH    0346 PM 07/13                        
5 WNW Grand Forks            55 MPH    0305 PM 07/13                        

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers 
for their dedication. Not all data listed are considered official.

Environment

Click here to see a comprehensive summary on the synoptic and mesoscale environment on July 13, 2023, as well as products issued by the Storm Prediction Center for this event.

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Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

July 13, 2023 Hail Event