DISCUSSION: As a second consecutive day of severe weather across the Central United States comes to a close, here is a truly breath-taking view of 1-minute resolution Super Rapid Scan visible satellite imagery of today's severe storms (some of which produced strong, damaging tornadoes as well). Incredible how you can see the real-time evolution of the strongest convective updrafts as defined by the bubbling overshooting tops just to the east of the dryline (denoted by the boundary between clear skies and broken which slowly moved eastward this afternoon across Western/Central Oklahoma. For more on this and other high-impact weather content from across the United States, click here!
DISCUSSION: As a weak pulse of energy moved through the greater North-Central Mississippi River Valley region earlier today, strong to severe thunderstorms erupted just west of the greater downtown area. As these severe storms moved through the greater St. Louis metro area, very large hail (i.e., roughly tennis ball to baseball-sized hail) for a brief time between 1:00 PM and 2:00 PM CST. Note how during the brief high-resolution satellite loop below you can see the small area of bubbling white clouds quickly blossom just prior to the heaviest rainfall and the largest hail occurring. For more on other neat high-impact weather content from across the United States, be sure to click here!
DISCUSSION: As a series of strong thunderstorms erupted across portions of the Central United States during the afternoon and evening hours yesterday, a few of the storms turned tornadic and deadly. In a relatively short period of time, a few severe thunderstorms encountered a region of increased vertical wind shear (i.e., wind direction and wind speed changing and increasing with height) which set the stage for tornadic thunderstorms to quickly develop. Unfortunately, one of the storms ripped through houses in the town of Wynnewood and induced 2 casualties. One of the most important aspects to any tornado event is to make sure you take adequate shelter (i.e., whether it is the most interior portion of your home and/or the lowest point in your home). Sadly, in some situations neither this is virtually possible due to time or available refuge in reasonable proximity to a person's location. Our thoughts and prayers go out to the families affected by these destructive storms which occurred across portions of Central and Eastern Oklahoma yesterday afternoon/evening. For more on this and other high-impact weather across the United States, click here!
DISCUSSION: As very destructive wildfires rage on across parts of Central to Southern Canada, tremendous amounts of carbon monoxide have been produced and injected into the atmosphere via the wildfires persistence. Attached below is a neat modeled view of the areas containing particularly high concentrations of carbon monoxide within an animated fluid framework. Note how you can identify the diurnal oscillation of the intensity of the aforementione carbon monoxide production over this 9 day period. For more neat high-impact weather across Canada and the rest of North America, be sure to click here!
DISCUSSION: As the same low-pressure system which triggered a few tornadoes and some decently widespread severe weather across the Central United States continues to slowly slide eastward today, more severe storms are firing up. The combination of persistent warm-air advection, storng vertical wind shear, and the presence of the strengthening low-pressure system itself has facilitated the formation of a number of supercell thunderstorms as of the last 60 to 90 minutes across Central Oklahoma! This particular storm (captured within the RadarScope screenshot below) shows the very dangerous storm (which in a short time already has produced a strong and life-threatening tornado) is currently just to the southeast of Wynnewood, Okalhoma and is moving to the east at around 25 MPH! Take shelter if you are in the path of this storm or alert friends/family immediately! For more on this and other high-impact weather events from across the United States, click here!
DISCUSSION: As strong to severe thunderstorms erupted across parts of the Central United States as of earlier this evening, very impressive infrared satellite imagery quickly evolved as the storms fired up. Note how in the sequence of images from earlier this afternoon evolved in accordance with the developing convective storms! The classic cooling cloud-top signature strongly supported the reality of deepening convection through the afternoon and evening hours as it happened. For more on this and other high-impact weather content from across the United States, click here!
DISCUSSION: As of earlier this evening, a strengthening low-pressure system helped to advect a plethora of deep-layer atmospheric moisture and instability. This fostered the development of deep convection which has produced damaging hail, strong winds, and even a few tornadoes thus far. Attached below is an amazing Super Rapid-Scan satellite perspective of these storms via high-resolution visible satellite imagery. Note how you can clearly identify the deeper convective towers in the individual thunderstorms which rapidly erupted just to the east of the dryline in extreme Northeast Texas earlier this evening prior to heading northeast. Though the convective threat will continue for several hours to come and through the day tomorrow as well, continuing the threat for destructive storms across parts of the Central United States. For more on this and other high-impact weather content from across the United States, click here!
DISCUSSION: As wildfires persist across parts of Central to Southern Canada, corresponding smoking rooms are traveling hundreds to thousands of miles to the south and southeast across parts of the Central and Eastern United States. Though the impacts have been much more pronounced across parts of Canada where the fires had been most destructive, the associated smoke plumes have created a thin veil of upper-level clouds across areas located anywhere from the North-Central to Southeastern United States as captured in the MODIS satellite image included below. For more on this and other high-impact weather content from across the United States, be sure to click here!
DISCUSSION: As a low-pressure system strengthens across the Central United States overnight and into the day tomorrow, there will be a dramatically increased threat for strong to severe thunderstorms across parts of Kansas, Oklahoma, Nebraska, and eventually points farther east as the storms move eastward to northeastward through the afternoon and evening hours tomorrow. The main threats will be strong and discrete supercell thunderstorms capable of producing large (i.e., likely damaging) hail, a few tornadoes (some of which may be strong as noted in the graphic below), and strong, damaging winds associated with the aforementioned storms! Stay tuned for the latest update on this developing situation through tonight and into tomorrow, by clicking here!
DISCUSSION: As the latest low-pressure system(s) begin to exit the Eastern United States, the next severe weather threat is already on the horizon for the earlier to middle part of next week! For more of the latest high-impact weather content from across the United States, be sure to click here!
DISCUSSION: As the month of April came and went, a number of interesting temperature trends made for very interesting statistics across the state of Alaska! As discussed in the well-written discussion (courtesy of the National Weather Service office in Anchorage, Alaska), a number of temperature records were set across the state! Read below for more on these neat statistics which were recently compiled. For this and other neat content from across the United States, be sure to click here!
DISCUSSION: As strong storms fired up across parts of the Mid-Atlantic region earlier this afternoon, some of the storms moved through an environment in which there were increasingly stronger veering (i.e., winds turning clockwise with height) wind profiles. As the storms moved into more vertically sheared environments, they develop stronger low to mid-level rotation and a few spot of tornadoes such as this one which formed in North Wilmington, North Carolina earlier today. Though this was certainly not considered to be a classic severe weather outbreak, it was certainly a significant event across these areas which do not as frequently see tornadic thunderstorms. For more neat content regarding other high-impact weather content across the United States, be sure to click here!
MUCH NEEDED RAINFALL COMING TO THE TRI-STATE AREA OVER THE NEXT 12 to 24 HOURS! (credit: NWS New York, New York)
DISCUSSION: As a weak low-pressure system makes its way up the East Coast over the next several hours, heavier rainfall will gradually move into the tri-state area with some areas likely to receive close to if not over an inch of rain. As stated in the graphic below, this is some much-needed rain for much of Long Island, the Hudson Valley, Northern and Central New Jersey, and Southwest Conecticut! For more neat weather content from across the United States, be sure to click here!
DISCUSSION: As Spring kicks into high-gear across the continental United States, many of the climatologically-expected synoptic (i.e., large-scale weather phenomena), mesoscale (i.e., approximately city/town to state-scale weather phenomena) are coming into play all across the country. Attached below is a perfect example of such an atmospheric Spring-time phenomena in the way of lake-breeze impacts emanating from the Great Lakes region of the United States. Note how in the image below (courtesy of the Suomi NPP VIIRS satellite imager) you can see the relative impacts of lake-breezes emanating from Lake Superior, Lake Michigan, Lake Huron, and Georgian Bay. You can see how the lake-breezes acted to displace much of the cloud-cover along the shorelines of the aforementioned water bodies. Lake-breezes, in their strongest form, can also have a pronounced influence on localized temperature changes based on the cooler air emanating from the inner portions of the respective water bodies acting to cool the air temperatures in cities and towns typically within a few miles of the shoreline. In some cases, this cooling can still occur despite persistent southerly flow trying to bring in warmer air further north provided that the southerly flow is not sufficiently strong (i.e., less than or equal to 10 knots). To see more neat weather content from across the United States, be sure to click here!