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MM’s Sun Wx Forecast for Sept 4

Flash flood watch for Sunday and Monday.
On September 4, 1964 the OGO 1 launch took place. It was the first Orbiting Geophysical Observatories mission designed to conduct numerous space experiments simultaneously. The images above captured during asteroid survey operations on Tuesday, August 25, by the University of Arizona’s Catalina Sky Survey and shows that observatory as it was getting ready to crash back to Earth in August of 2020. (Credits: Catalina Sky Survey/University of Arizona/NASA)

Wx Summary

A flash flood watch is in effect for Sunday and Monday. Be careful if you’re around waterways today. Even the most harmless of streams can turn deadly during a flash flood. And NEVER drive across flooded roadways, especially if the water is moving. Most flood deaths occur in vehicles. Even on the plateau we face the risk from the dangers of flash floods. Water on the plateau can rise quickly and water often falls quickly, but if you lose your life during the high water it doesn’t matter how quickly that water recedes.

Rain and storms will dominate the rest of our Labor Day weekend. Some of that rainfall will likely be heavy and cause flash flooding. Rain chances continue beyond Labor Day and throughout all of next week.

This Week’s Hazards

MM’s Wx Vlog 

Five-Day Outlook

Weather Forecast

Sunday: Flash flood watch for all of today and tonight. Rain and thunderstorms likely. Some of the rainfall cold be heavy and cause flash flooding. Southeast wind at 5 mph.

Labor Day: Flash flood watch until 7:00 pm. Rain and thunderstorms likely. Some of the rainfall cold be heavy and lead to flash flooding. South wind at 5 mph.

Tuesday & Wednesday: Scattered showers and thunderstorms likely. Southwest wind at 5 mph.

Thursday: Scattered showers and thunderstorms.

MM’s Severe Wx Concerns 

If you make outdoor plans through Labor Day please keep an eye on the radar and have an indoor back-up plan. The greatest threat for today and tomorrow is flash flooding. If you’re out driving and encounter heavy rainfall be safe on those roads. Remember, never drive across flooded roadways, especially if that water is moving. If you live near a flood-prone area be ready to seek higher ground quickly.

 Past 24-Hour Precip Totals

Severe Weather Safety 

HRRR Radar Model

This radar model runs from 9:00 a.m. to 9:00 p.m. in one-hour increments and does a good job showing the trend expected for today.

On This Day 

1986- Murfreesboro records its greatest one-day rainfall ever, measuring 8.13″.

1970 – The greatest natural disaster of record for Arizona occurred. Unprecedented rains caused rivers in central Arizona to rise five to ten feet per hour, sweeping cars and buildings as far as 30 to 40 miles downstream. Flooding claimed the lives of 23 persons, mainly campers, and caused millions of dollars damage. Water crested 36 feet above normal near Sunflower. Workman’s Creek was deluged with 11.40 inches of rain in 24 hours to establish a state record. Moisture from Pacific Tropical Storm Norma led to the severe flooding. (4th-6th) 

1986 – An unusually strong dust devil moved across the Flagstaff Pulliam Airport. The dust devil blew open the doors of the National Weather Service office scattering papers and bringing down a ceiling-mounted light fixture. 


Past 24-Hour Temperature Changes

Bluer colors represent colder temps from 24 hours ago, while redder colors indicate warmer temps from 24 hours ago. This map covers the time period from Saturday morning to Sunday morning. Notice how much colder eastern Canada is this morning. That’s from the cold front that is bringing us rain this weekend. That cold air will stay north of us.

Today’s High Temps & Departure from Average

Today’s high temps are shown below. The coloration indicates departure from average, with redder colors indicating above-average high temps and bluer colors indicating below-average high temps. White coloration indicates average temps.

Highest temp expected today: 121 degrees (red star)

Coolest high temp expected today: 42 degrees (blue star)

Tomorrow Morning’s Low Temps & Departure from Average

Tomorrow morning’s low temps are shown below. The coloration indicates departure from average, with redder colors indicating above-average low temps and bluer colors indicating below-average temps. White coloration indicates average temps expected.

Warmest overnight low expected: 96 degrees (red star)

Coolest overnight low expected: 31 degrees (blue star)

Fall Foliage Map

Hurricane Forecast

Danielle is the first hurricane of the season and will stay well out to sea. Earl is a healthy tropical storm but will also stay out to sea. The yellow-shaded region near Africa will be monitored over the coming days, though it also looks to stay at sea.

MM News

I created a video for anyone who is interested in getting their GED and is nervous about that first visit. In the video, I help you walk through that door for the first time! If you know anyone who needs their diploma, just send them my way! We can also help anyone brush up on their skills, especially if you have been out of high school a while and now want to go to college or trade school. Just give our office a call and see how we can help you! 931-484-4651 or just email me at!

MM Classes for Kids

Registration for the next MM kids’ class in Crossville is now open! That class will be Wednesday, September 14th at 4:30. The class topic is the Artemis mission that will take man back to the Moon! That required registration form can be found at


It’s been a year since I sarted my MM newsletter and people are renewing their subscriptions! I must be doing something right.

The latest newsletter was published Friday and I am offering it as a free sample to celebrate one year of newsletter writing. I also hope you’ll like what you see and want to subscribe (just $5 a month!). Just follow the link below. The MM newsletter is offered bi-weekly from now on and covers a variety of topics, though often that focus is on our region here in Tennessee. Subscription dues go toward paying the cost of supplies and activities for my free MM kids’ classes.

Check out the free sample today! These newsletters can be great to share with your kids and may even spark their interest in science!

Other important weather information will be shared when needed. This includes additional severe weather information, model data, drought info, hurricane info, and more. Many of these can be found as tabs to this page at any time.

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

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