Jonathan Erdman

@wxjerdman.bsky.social

Senior meteorologist @weatherchannel. M.S. Colorado State Univ.; B.S. UW-Madison; Insightful. Interesting. Impactful. Weather. Opinions are mine only, not of my employer.

Tropical weather fans, hurricane experts: What's your "Mt. Rushmore" of US hurricanes? I think the top 2 are pretty straightforward. But narrowing down the last 2 is much more challenging. 🤔

NWS-Green Bay rated the Appleton-Menasha tornado a preliminary EF3, with maximum estimated winds of 140 mph. Since 1950, per NCEI storm events database, that's only the 4th tornado rated F/EF3+ in either Outagamie or Winnebago Counties. The last one, there, was April 27, 1984.

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Fans at Lambeau Field for today's Packers annual shareholder meeting should pay close attention to the weather. A line of severe t-storms could head toward Green Bay in about an hour. Listen to directions of Lambeau Field staff and seek shelter if those storms move in.

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Three weeks of July in the books, and it has been among the top 10 hottest on record from Florida to parts of the Northeast, Great Lakes and N. Plains. Hottest: Elkins, WV; Marquette, MI (tie) and Rapid City, SD. Data: SERCC

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We're now halfway through "meteorological summer" (June-August). Boston, Providence, W. Palm, Ft. Lauderdale and Sarasota have had their warmest first half of any "meteorological summer", per SERCC.

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Smoke outlook: - Some improvement later today in upper Midwest. - T-storm threat could clean air in Northeast tomorrow - Second, third waves of smoke this weekend, then Tue-Thu. - That "third wave" could -> parts of South.

Now the third highest flood level on record along the Guadalupe River at Comfort, TX. About 1.5 feet above the July 4, 2025, crest, there, and behind only the floods of 1869 and 1978.

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FWIW, NASA's GEOS model is forecasting two more southward plunges of wildfire smoke: 1) This weekend 2) Next Tue-Thu The second one could at least bring some surface smoke into parts of the South.

This smoke episode the next couple of days won't be the only one. With NW flow aloft forecast to be reinforced in the E. US, we could see another smoke episode this weekend, then again next week. It's a "catch 22" we've seen in recent summers. Heat relief, but smoke-tapping pattern.

They may come up just short, but two typical US "cold spots" will flirt with extremely rare 100s today. Int'l Falls, MN ("Nation's Icebox") last hit 100˚ almost 103 years ago. Marquette, MI (NWS office location) has not recorded a triple digit high in records since 1961.

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Jarring to see a forecast high in a location that hasn't recorded a 110˚+ high that isn't in the South. Billings, MT all-time record is 108˚. Not to mention a potential all-time record tie in Salt Lake City Sunday.

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Admittedly, just one run of one operational model that often is strongest with ridges, so all typical disclaimers apply and mainly for entertainment purposes. But....600dm ridge, anyone?

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