Steadier, Heavier Rain Arrives Today
A withering drought continues for much of the western USA, long-track tornadoes may grind across Louisiana and Mississippi later today and massive wildfires are burning from Texas to the Florida Panhandle. So remind me not to whine about puddles, potholes, muddy shoes and a little Wednesday slush.
March can whip up legendary storms. Huge north-south temperature gradients can spin up high winds and intense areas of low pressure capable of blizzard conditions, flash flooding and damaging thunderstorms.
Mercifully, today’s storm will drop a cold rain on Minnesota. Rainfall amounts may exceed half an inch, with enough cold air wrapping into the storm’s circulation for a changeover to slushy snow tonight into Wednesday morning. I can’t get excited about snowfall amounts (maybe a coating to an inch in the metro area but 3-6” from Brainerd and Duluth north to the Arrowhead).
I see a run of 40s and a few 50s into late March; a few degrees above average.
Nothing polar – no subzero relapses or snowy punches.
Mostly Rain. Temperatures cool through the 40s today with mostly rain through the evening hours. Wet snow mixes in overnight with a slushy coating possible by Wednesday morning.
Severe Threat Ramps Up. Here is an excerpt of a Praedictix briefing issued yesterday:
Moderate Severe Threat Tuesday. As we head into Tuesday and Tuesday Night, the severe storm threat will ramp up with an outbreak of severe storm expected. Due to it, a Moderate Risk of severe weather (threat level 4 of 5) is in place across portions of Louisiana and Mississippi, including Baton Rouge (LA), Jackson and Hattiesburg (MS). The potential exists for significant and damaging tornadoes, along with large hail and damaging winds.
Timing Tuesday Storms. Storms from Monday will continue to move eastward on Tuesday, still producing all types of severe weather hazards. Ahead of those storms, we could see additional storms pop across the region, providing an additional severe weather threat – especially a tornado threat, some of which could be significant. This means some areas could see multiple rounds of severe weather on Tuesday across the Deep South.
Greatest Tuesday Threat: Tornadoes. The greatest threat from this expected outbreak of severe storms on Tuesday across the Deep South will be tornadoes – some of which could cause significant damage. The threat of tornadoes will occur in both the line of storms moving across the region as well as individual storms that form in front of that band of storms.
Hail And Wind Also Possible. While tornadoes appear to be the highest threat from storms on Tuesday across the lower Mississippi Valley and Deep South, damaging winds and large hail will also be possible.
Flooding Risk The Next Couple Of Days. This system will also produce the potential of flooding rains across the southern United States over the next couple of days. Both days have a Moderate risk of excessive rainfall that could lead to flooding. Today and tonight the highest threat is across portions of eastern Texas, western and northwestern Louisiana, and southern Arkansas. Model guidance shows the potential of 3-6” of rain (with locally higher amounts) through early Tuesday morning across this region. This heavy rain could lead to an area of more numerous flash flooding events – some of which the Weather Prediction Center says, “could be locally significant.” The threat moves east over Louisiana, Mississippi, and Alabama as we head into Tuesday and Tuesday Night, with the potential of 2-4” with locally up to 7” in a 24-hour period. Recent heavy rain has left the soil quite saturated and streamflow conditions elevated. Therefore, this additional heavy rain could lead to additional flooding concerns.
Flood Watches And Rainfall Amounts. From tonight into Tuesday Flood Watches are in place across portions of the lower Mississippi Valley, including Houston (TX), Arkadelphia and Pine Bluff (AR), Monroe and Baton Rouge (LA), and Jackson, Hattiesburg, Meridian, and Columbus (MS). Again, at least 2-5” of rain can be expected from eastern Texas into the Deep South over the next couple of days.
Snow And Ice On The Cold Side. On the northern side of this system, there will be enough cold air in place at times to bring the threat of snow and ice from the Rockies to the central/northern Plains. Some of the heaviest snow will fall in the Rockies and around the northern Great Lakes, with icing as well in the northern Great Lakes. Winter Weather Advisories and Winter Storm Warnings are in place, including:
- Amarillo, TX: Winter Weather Advisory from 7 PM tonight to 10 AM Tuesday for 1-4” of snow and wind gusts to 50 mph.
- Dodge City, KS: Winter Weather Advisory from 7 PM tonight to 10 AM Tuesday for 1-4” of snow and wind gusts to 50 mph.
- Goodland, KS: Winter Weather Advisory through 6 PM tonight for up to 4” of snow and wind gusts to 50 mph.
- Duluth, MN: Winter Weather Advisory from 10 PM tonight to 7 AM Wednesday for 2-4” of snow, up to 0.1” of ice, and wind gusts to 35 mph.
- Grand Marais, MN: Winter Storm Warning from 1 AM Tuesday to 1 PM Wednesday for 7-11” of snow (isolated 15”) and wind gusts to 35 mph.
Snow And Ice Amounts. Snow will be possible from the Rockies to the Great Lakes. In some areas of the North Shore of Minnesota, 7-11” of snow – with isolated 15” amounts – will be possible. Some areas of northern Minnesota could also see up to 0.25” of ice. Snow and ice could lead to travel concerns.
Severe Risk Extends Into Wednesday. The system that is causing our severe threat the next few days will continue to move east as we head into Wednesday with a cold front trailing into the Southeast United States. This will continue to spark the threat of severe weather for the middle of the week, with a Slight Risk (threat level 2 of 5) in place from southern Virginia to the central Gulf Coast. Damaging winds, hail, and tornadoes will continue to be possible.
D.J. Kayser, Meteorologist, Praedictix
States Impacted: OK, TX, AR, LA, MS, AL, FL, GA, SC, NC, VA, KY, CO, NM, KS, NE, IA, MN, WI, MI
It’s 70 Degrees Warmer Than Normal in Eastern Antarctica. Scientists are Flabbergasted. That’s probably not a good omen – here’s an excerpt from MSN.com: “The coldest location on the planet has experienced an episode of warm weather this week unlike any ever observed, with temperatures over the eastern Antarctic ice sheet soaring 50 to 90 degrees above normal. The warmth has smashed records and shocked scientists. “This event is completely unprecedented and upended our expectations about the Antarctic climate system,” said Jonathan Wille, a researcher studying polar meteorology at Université Grenoble Alpes in France, in an email. “Antarctic climatology has been rewritten,” tweeted Stefano Di Battista, a researcher who has published studies on Antarctic temperatures. He added that such temperature anomalies would have been considered “impossible” and “unthinkable” before they actually occurred...”
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65 F. Twin Cities high on Monday.
44 F. Average MSP high on March 21.
63 F. MSP high on March 21, 2021.
March 22, 1991: A historic ice storm begins during the afternoon and ends as heavy, wet snow on the 23rd. This event coated the city of Duluth with as much as 6 inches of ice. The 850-foot WIDO TV tower was toppled. 4 million pine trees were damaged or destroyed with the heaviest damage at G.C. Andrews State Forest near Moose Lake in Pine County.
March 22, 1952: A snowstorm dumps 13.2 inches on the Twin Cities.
TUESDAY: Heavier, steadier rain. Winds: NE 8-13. High: 44
WEDNESDAY: Early coating of slush? Cold wind. Winds: N 10-20. Wake-up: 34. High: near 40
THURSDAY: Sunny and springier. Winds: NW 8-13. Wake-up: 31. High: 49
FRIDAY: Gusty winds, few showers. Winds: NW 15-35. Wake-up: 35. High: 42
SATURDAY: Sunny and cool. Winds: NW 10-15. Wake-up: 27. High: 41
SUNDAY: Mix of clouds and sunshine. Winds: SE 10-15. Wake-up: 28. High: 47
MONDAY: Plenty of sunshine, milder. Winds: SE 10-20. Wake-up: 32. High: 53
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