This is Dr. Tim Coleman's Typepad Profile.
Join Typepad and start following Dr. Tim Coleman's activity
Join Now!
Already a member? Sign In
Dr. Tim Coleman
Recent Activity
Image
It's almost like the active pattern of upper-level troughs and cold fronts delivering cold air into the U.S., that started back in January, has never fully come to a stop. A cold front will come through Alabama tomorrow, bringing more beautiful, unusually mild weather for July by Tuesday and Wednesday.... Continue reading
Posted yesterday at WBRC Weather
Image
Today is July 17. Yet, 1 pm temperatures were 81 at Birmingham and Anniston, and 80 at Tuscaloosa. A lot milder than usual. This morning's low were even more out of the ordinary. Birmingham, Anniston, Tuscaloosa, and Montgomery all set new record lows for the date. Take a look at... Continue reading
Posted Jul 17, 2014 at WBRC Weather
Image
A couple of fairly small but intense storms, possibly related to the BHM heat island, have been moving very slowly through Tarrant City, Ketona, Sun Valley, and parts of Center Point and Roebuck for the past hour or more. Another storm has been near Gardendale and Fultondale. The BHM airport... Continue reading
Posted Jun 17, 2014 at WBRC Weather
Image
Another area of rain and storms is located over Mississippi and extreme west Alabama this morning. So far, these storms do not look severe, but they will likely intensify some as they move into the unstable air over central Alabama. With dewpoints in the lower 70s, any rise in temperatures... Continue reading
Posted Jun 10, 2014 at WBRC Weather
Based on radar data and wind gust measured at Tuscaloosa I expect Wind of 40 to 60 mph across bhm metro next 30 minutes. A few trees may go down so stay indoors. Dr Tim Coleman Continue reading
Posted Jun 9, 2014 at WBRC Weather
Standing on my pier on the Warrior river early this morning before bed, no visible lightning, no thunder. Just a waxing moon and bugs. Radars to the west paint a different picture. One line of storms in central Mississippi. .. Another from west Tennessee into north Mississippi. The ones in... Continue reading
Posted Jun 8, 2014 at WBRC Weather
Image
Blobs of severe storms, with potential for damaging winds, are all over north AL, north MS. A weak upper disturbance is moving by to our north, and there is actually a little bit of low level wind shear for storm rotation, in adition to deep shear for storm organization overnight.... Continue reading
Posted Jun 7, 2014 at WBRC Weather
The way these storms are moving, if you work downtown/Homewood/Hoover, you can probably still get home ahead off the torrential rain if you live south of town. DRiving in these storms still be very difficult. The training and slow movement may lead to flash flooding. Dr Tim Coleman Continue reading
Posted Jun 6, 2014 at WBRC Weather
The way these storms are moving, if you work downtown/Homewood/Hoover, you can probably still get home ahead off the torrential rain if you live south of town. DRiving in these storms still be very difficult. The training and slow movement may lead to flash flooding. Dr Tim Coleman Continue reading
Posted Jun 6, 2014 at WBRC Weather
Image
We are under a severe thunderstorm watch again today. The air is once again very unstable, with upper-level temperatures still a little cool (it's very early in the summer), yet warm, humid air is in place at the surface. This will allow numerous, large thunderstorms to form this afternoon, with... Continue reading
Posted Jun 6, 2014 at WBRC Weather
Image
The area of storms continues to move rapidly SE, and the original bow echo has merged with storms over western Tennessee. A few reports...Memphis wind gust 52 mph, Jackson TN wind gust 68 mph, Blytheville AR 59 mph. Trees and powerlines are down all over west TN, and some roofs... Continue reading
Posted Jun 5, 2014 at WBRC Weather
Image
(Still Photo by Kevin Knupp) Ryan Wade of UAH captured an amazing time-lapse video of the cloud features associated with an atmospheric wave moving into Huntsville right ahead of a thunderstorm this morning. For time lapse video, click on http://vortex.nsstc.uah.edu/public/uahsevere/swirll_shelfcloud.mp4 The pressure trace at UAH shows the wave very well... Continue reading
Posted Jun 5, 2014 at WBRC Weather
Image
A bow echo, or line of severe storms that is bowing out due to very strong winds, is currently moving across southern Missouri and northern Arkansas. The air is unstable already, and will get more unstable as the day goes on due to heating (even though we have high clouds,... Continue reading
Posted Jun 5, 2014 at WBRC Weather
Image
This is a picture grabbed by Wes Wyatt of the gust front, or cool air rushing out ahead of the storms, as they came into downtown 30-45 minutes ago. Notice the dust cloud at the bottom! You can see a fine line on radar where the gust front is lifting... Continue reading
Posted May 28, 2014 at WBRC Weather
Image
I took the above screenshots of my phone last night, right after I left our place on the Warrior River (on the Walker/Jefferson County line), and then again later after I was home in Trussville. I was using the free GPS Essentials app on Android, a great app that shows... Continue reading
Posted May 28, 2014 at WBRC Weather
Image
With the moist, unstable air over Alabama, showers and thunderstorms persist even late tonight, mainly over NW Alabama. The strongest storms at 1230 am extended from near Jasper, across parts of Smith Lake to near Moulton, then in parts of Franklin county. The only report of severe weather was back... Continue reading
Posted May 27, 2014 at WBRC Weather
KBHM 211953Z 25006KT 10SM FEW250 30/13 A3017 RMK AO2 SLP207 T03000133= KBHM 212053Z 26011G19KT 10SM FEW250 30/12 A3014 RMK AO2 SLP199 T03000117 58021= KBHM 212153Z 23011KT 10SM SCT250 30/12 A3013 RMK AO2 SLP194 T03000117= KBHM 212253Z 24013KT 10SM SCT250 29/13 A3013 RMK AO2 SLP194 T02940128= Above are the observations from... Continue reading
Posted May 22, 2014 at WBRC Weather
Image
After a very long and cold winter (that didn't completely let go, to me, until this weekend when we had late May lows in the 40s), summer has arrived in Alabama in terms of the weather pattern. That's not to say we have not had a beautiful Spring; we have.... Continue reading
Posted May 20, 2014 at WBRC Weather
This past weekend was probably the long, cold "winter"s last hurrah. From Thursday through Sunday, we had three days with high temperatures in the 60s and three days with 24-hour lows in the 40s (both rare this late in May.) Temperatures over the 4 days were 9.4 degrees below normal.... Continue reading
Posted May 19, 2014 at WBRC Weather
Image
At 2 pm, the temperature finally got out of the 50s at Birmingham, but it's still only 62 degrees. The only day since 1896 we've stayed in the 50s this late in the spring was May 18, 1945 (59 degrees). But, if we don't make it past 65, it will... Continue reading
Posted May 15, 2014 at WBRC Weather
Image
It is afternoon in May, and temperatures in parts of Arkansas are in the 4os, with wind chill near 40! Wow! This past winter never stops. That cold air will rush into Alabama tonight and tomorrow. We'll start the day near 50 degrees, and even with clearing skies, temperatures will... Continue reading
Posted May 14, 2014 at WBRC Weather
Image
(Tracks of all violent tornadoes 1950-2012, NOAA Storm Prediction Center) 1. Introduction For decades, we have been taught from elementary school that "tornado alley" is in the Great Plains of the U.S., approximately from Texas to Nebraska and Iowa. But, is this true? Trusted mapmaker Rand McNally seems to agree... Continue reading
Posted May 14, 2014 at WBRC Weather
Image
The chart below, released by the National Weather Service, has generated some buzz, especially since it shows that the April 28 outbreak two weeks ago was the 4th biggest on record for Alabama. (National Weather Service) The above chart is based on data since 1950. The biggest tornado outbreak in... Continue reading
Posted May 13, 2014 at WBRC Weather
Image
In a previous blog, http://birmingham.raycomweather.com/2014/05/2014-tornado-outbreak-and-revisiting-tornado-risk.html, I showed the 2014 tornado outbreak across the Southeast and its similarity to the risk area found by Coleman and Dixon (2014) in a peer-reviewed article. Tornado alley does not look like it's in the Great Plains, and it hasn't been for 40 years. That... Continue reading
Posted May 7, 2014 at WBRC Weather
Image
The above video is from the live coverage on Fox 6 last Monday night. It shows the Bessemer tornado go right by the camera at UAB Medical West. The camera keeps running because it is at the hospital (that has emergency power). (If the above video does not load on... Continue reading
Posted May 7, 2014 at WBRC Weather