Greg Postel

The best in history

NHC will initiate advisories on Tropical Depression Two (formerly AL91) located over the northeastern Gulf of America, at 1100 AM EDT (1500 UTC).

Tall thin cloud warning ⚠️.

😂

It appears to be the MCV created yesterday morning under the anvils of a larger set of storms tied to the high-altitude “upper low”. MCVs can last for days, and are well known to offer a pathway for tropical cyclone genesis. #flwx

Sporty little vortex in the 88-D out of Tampa. Spinning hard at 7k ft, if not lower. #flwx

A significant event is looking more likely Saturday. Multiple rounds of storms expected, which may begin before noon and extend after sunset. There is a significant risk of wind damage, w/ a notable risk of flooding & potential for tornadoes. See reply post for larger graphics.

7/16: The latest Saharan Air Layer (SAL) analysis from CIMSS shows African dust spreading into the central Caribbean Sea. The SAL brings warm, dry, stable air and stronger winds—conditions that can suppress tropical cyclone development and limit intensification.

@SandraPisclmdb Thank you, & you're welcome!

@GregPostel Thankyou for your wx explanations. Interesting and so much easier to understand!

7-day West Texas Mesonet rainfall totals with radar estimates through 7 am Thursday.

Slow-moving upper lows, MCVs, tropical moisture ... all trapped on the southern edge of the Northern Plains heat wave ... giving us a lethal flood threat in Texas. #txwx

The smoke debris is so thick, the sun is fully obscured in central CT.

The most badass bike racer in history decimates the comp once again in the mountains of stage 10. Tadej Pogacar.

500mb geopotential height above 600dm last night is a first for central Minnesota/Wisconsin, according to ERA5. All-time record (1950-present).

An updated Day 3-7 Hazards Outlook has been issued. wpc.ncep.noaa.gov/threats/threat…

114F in Miles City Montana. Lots of 100s on tap for many more of us this week.

Record-breaking heat continues across the north-central U.S. through midweek, with above average temperatures expected to persist across parts of the Corn Belt through next weekend. Be sure to take precautions if spending time outdoors! See the latest Key Messages for more:

Every single person in the crowd is recording Messi when he's near their corner 😂🔥

Another day in the mid 90s for the ol’ ATL

Max temp for my town today is 92. “Feels like” is 100 Max temp for tomorrow is 100. But 100 “feels like” 105. So does today “feel like” 105? Which 100 are we talking about? 😂