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MM’s Thurs Wx Forecast (Dec 9)

Monitoring the threat for severe weather

MM’s Wx Vlog 

Today’s Afternoon Wx Map

A warm front lifts north into the Ohio River Valley today, while another warm front gathers strength near the coast. The main concern is that developing cold front over Kansas that will bring us strong storms Friday night and Saturday morning.

Daily weather map showing fronts and precipitation. Valid for this afternoon. See precip legend at the lower left.

24-Hour Forecast 

Local Seven-Day Forecast

Thursday: Partly to mostly cloudy. Windy.

Friday: Mostly cloudy, with scattered showers and thunderstorms developing. Windy.

A few storms may be severe Friday night. Heavy rainfall is also possible.

Saturday: Rain & storms likely, especially before noon. Some storms could be strong. Windy. Rain tapers off by evening as temperatures drop.

Sunday: Mostly sunny. Cooler.

Monday – Wednesday: Mostly sunny. Warmer. Very nice for this time of year!


MM’s Wx Concerns

Another strong storm system could bring heavy rainfall and the threat of strong storms from Friday to Saturday. Strong southerly winds could also prompt wind advisories. I’ll keep a close eye on all of this.

Strong, southerly winds will be increasing today and getting stronger through Saturday ahead of our next storm system. Be prepared for sporadic power outages that we often see with these wind events. Make sure those holiday decorations are secure! The wind can be a real Grinch! 🙂 Winds should subside by Saturday night.

Concern is increasing for storms Friday night and early Saturday morning. I’ll get more specific with timing as we near the event. Go ahead and start preparing now for severe storms during this time period.

Today’s Stats

Almanac for Yesterday  

 National High Temps for Today 

Unseasonably warm air pushes north today across much of the country.

Shading indicates the departure from normal. Bluer colors indicated below normal temps, while oranges and reds indicate above-normal temps. See scale on the left. The red star indicates where the national maximum temp is expected, the blue star shows the location of the minimum.

National Low Temps for Tonight  

A very unseasonably warm night is in storm for the southern half of the US.

Shading indicates the departure from normal. Bluer colors indicated below normal temps, while oranges and reds indicate above-normal temps. See scale on the left. The red star indicates where the national maximum temp is expected, the blue star shows the location of the minimum.

24-Hour Temperature Change 

It is dramatically warmer across the central US this morning than it was 24 hours ago! Wow!

This map shows the change in temperature from yesterday morning to this morning. Reds indicate warmer temps, while blue indicates colder temps compared to temps 24 hours ago. See scale on the left that shows how many degrees difference was calculated.

On This Day in Wx History

1917- It’s a cold day in Middle Tennessee. Clarksville sees the mercury plunge to -12 degrees, which sets a new record low for December. Other readings include Crossville Experiment Station, -11, McMinnville, -1, and Nashville, 0.

MM News

The next MM Kids class will be Tuesday, December 14, at 4:00 pm at TCAT. Suggested age range is 8 yrs and up.

NOTE: Class is nearly full!

This hour-long class focuses on weather folklore. We’ll discuss what works and what doesn’t and why. We’ll also discuss just how complex our planet’s atmosphere is and what that means for folklore. A hands-on activity will make the lesson come to life! Sign up at

Drought Monitor 

The data cutoff for Drought Monitor maps is each Tuesday at 7 a.m. The maps, which are based on analysis of the data, are released each Thursday at 7:30 a.m.

This is the latest map and info, released today!

Summary by the US Drought Monitor at the University of Nebraska

This U.S. Drought Monitor (USDM) week saw continued deterioration in conditions across areas of the Mid-Atlantic (Virginia, North Carolina) and the Southeast (South Carolina, Georgia) in response to below-normal precipitation (past 30- to 90-day period), declining soil moisture and streamflow levels. Likewise, drought-affected areas expanded and intensified on the map in areas of the South including Louisiana, Arkansas, and Texas as well as in the Southern Plains of Oklahoma, where overall warm and dry conditions have prevailed during the past 30- to 120-day period. Across areas of the Northern Plains, Upper Midwest, and the Northeast, light-to-heavy snowfall accumulations were observed during the past week. The heaviest accumulations (8-18 inches) were centered on northern portions of Minnesota, Wisconsin, and Michigan, while lake-effect snowfall (2 to 8 inches) impacted areas downwind of Lake Erie and Lake Ontario in New York, according to snowfall analysis from the National Weather Service (NWS) National Operational Hydrologic Remote Sensing Center (NOHRSC). Out West, some areas including the North Cascades, Sierra Nevada, and the Northern and Central Rockies, received much-needed snowfall this past week. However, basin-level snowpack conditions remained below normal across the entire western United States. In Hawaii, a Kona Low delivered very heavy rainfall accumulations (highest totals exceeding 16+ inches) leading to widespread flooding, power outages, and damage to infrastructure in areas across the Hawaiian Island this week. Impacts from the multi-day event led Hawaii Governor Ige to declare a state of emergency on December 6. With the meteorological autumn (September-November) coming to a close, the Lower 48 experienced its third warmest fall on record with the largest mean temperature departures from average observed across areas of the Northern and Central Plains, according to NOAA’s National Centers for Environmental Information (NCEI). In terms of fall precipitation, the driest conditions were observed across parts of the Southwest, Texas, Montana, Wisconsin, and the Carolinas.

Estimated Population in Drought Areas in the US: 96,501,580

Estimated Population in Drought in the South: Last Week:  8,608,590 This Week: 12,352,977

Tennessee’s drought areas increased, especially across West Tennessee.

Meteorologist Mark Pro 

Each week’s newsletter is something for any science nerd to look forward to! Each week’s letter contains an educational and informative story, along with other interesting tidbits concerning recent news and developments. Many of the stories are about our own Cumberland Plateau!

Today’s newsletter defines what cold air is. Have you ever thought about? There’s also an interesting weather history story, as well as a fascinating NASA nerdology tidbit. This and more are available at!

The FREE monthly kids newsletter is available at that site, too. Just follow the link to “Newsletter for Kids.” The latest edition was published yesterday!

Subscriptions to the weekly newsletter go to support MM’s education outreach, including the FREE monthly kids newsletter available at are just $6 a month if you pay monthly and only $5 a month if you pay annually! That’s quite the deal for a local weekly newsletter that’s always very interesting! Thank you!

You all have a great day and keep lookin’ up!

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