daryl herzmann
@akrherz.bsky.social
Iowa Environmental Mesonet https://mesonet.agron.iastate.edu ,
Father of all the IEMBots here,
https://github.com/akrherz
Signal >> Noise, hopefully.
Father of all the IEMBots here,
https://github.com/akrherz
Signal >> Noise, hopefully.
With Ames + Des Moines, IA having a high of 67°F today, my kids forced me to compute the climate sites with the highest frequency of a six seven high temp. The overall "winner" within my database is Hawaii National Park, HI (~1200m) at 25 days per year with a number of CA sites not far behind. #sigh
October 20, 2025 at 10:46 PM
With Ames + Des Moines, IA having a high of 67°F today, my kids forced me to compute the climate sites with the highest frequency of a six seven high temp. The overall "winner" within my database is Hawaii National Park, HI (~1200m) at 25 days per year with a number of CA sites not far behind. #sigh
I do check X once a day for anybody contacting me for help and noticed this trending there. @shawnmilrad.bsky.social if you are listening...
September 23, 2025 at 3:19 PM
I do check X once a day for anybody contacting me for help and noticed this trending there. @shawnmilrad.bsky.social if you are listening...
Done, it takes a bit to generate though.
August 26, 2025 at 7:31 PM
Done, it takes a bit to generate though.
Was computing some stats and realized NWS Norman has issued over 1,000 Severe Thunderstorm Warnings this year! Here's the top 10 yearly counts
2025 OUN 1003
2024 OUN 988
2019 OUN 942
2017 OUN 923
2016 OUN 907
2011 LZK 901
2023 OUN 894
2008 OUN 871
2008 JAN 823
2003 JAN 796
2025 OUN 1003
2024 OUN 988
2019 OUN 942
2017 OUN 923
2016 OUN 907
2011 LZK 901
2023 OUN 894
2008 OUN 871
2008 JAN 823
2003 JAN 796
August 14, 2025 at 10:53 AM
Was computing some stats and realized NWS Norman has issued over 1,000 Severe Thunderstorm Warnings this year! Here's the top 10 yearly counts
2025 OUN 1003
2024 OUN 988
2019 OUN 942
2017 OUN 923
2016 OUN 907
2011 LZK 901
2023 OUN 894
2008 OUN 871
2008 JAN 823
2003 JAN 796
2025 OUN 1003
2024 OUN 988
2019 OUN 942
2017 OUN 923
2016 OUN 907
2011 LZK 901
2023 OUN 894
2008 OUN 871
2008 JAN 823
2003 JAN 796
So even with the latest AWIPS geodatabase for CWAs, they don't line up. My guess is that the forecast zones, counties, and CWA borders don't all align in Alaska, so a crude border is drawn given the ambiguity. Do you have thoughts on this?
August 4, 2025 at 12:15 PM
So even with the latest AWIPS geodatabase for CWAs, they don't line up. My guess is that the forecast zones, counties, and CWA borders don't all align in Alaska, so a crude border is drawn given the ambiguity. Do you have thoughts on this?
One always feels bad emailing the SDM in these situations as they likely are getting slammed by emails and can't send any alerts themselves as their dissemination is down as well. Alas, a data flow outage is afoot...
July 18, 2025 at 3:25 AM
One always feels bad emailing the SDM in these situations as they likely are getting slammed by emails and can't send any alerts themselves as their dissemination is down as well. Alas, a data flow outage is afoot...
My goodness, sounds like a eulogy for me. I think I am still around, but your cookie is long gone. You also provided me with lots of muffins, which helped me out a bunch.
July 17, 2025 at 2:32 PM
My goodness, sounds like a eulogy for me. I think I am still around, but your cookie is long gone. You also provided me with lots of muffins, which helped me out a bunch.
Here's an attempt for tornado warning (county based) warning counts normalized by county area. Caveats galore with this being the polygon area and how the polygons have inflated county warning counts.
July 17, 2025 at 2:37 AM
Here's an attempt for tornado warning (county based) warning counts normalized by county area. Caveats galore with this being the polygon area and how the polygons have inflated county warning counts.
~1986. I don't have this as a tool nationwide, but this does it on a more regional basis. mesonet.agron.iastate.edu/plotting/aut... Here's a raw top 10 county tornado warning count. I'll refresh a manually generated CONUS plot for this shortly.
July 17, 2025 at 2:13 AM
~1986. I don't have this as a tool nationwide, but this does it on a more regional basis. mesonet.agron.iastate.edu/plotting/aut... Here's a raw top 10 county tornado warning count. I'll refresh a manually generated CONUS plot for this shortly.
Onto rebooting the next thing
July 16, 2025 at 7:25 PM
Onto rebooting the next thing
We have reached the reboot stage of this outage.
July 16, 2025 at 6:55 PM
We have reached the reboot stage of this outage.
By design or luck(?) that the few radars that are online are all with the current tornado warnings...
July 16, 2025 at 6:12 PM
By design or luck(?) that the few radars that are online are all with the current tornado warnings...
2.5 hours into the outage, we get our first update.
July 16, 2025 at 6:02 PM
2.5 hours into the outage, we get our first update.
Suboptimal, but looks colorful.
July 16, 2025 at 4:21 PM
Suboptimal, but looks colorful.
Plot shows weekly normalized NWS issuance counts of TOR, SVR, and FF Warnings. Top panel is Iowa WFOs and the bottom panel is nationwide. For Iowa, small populations during winter weeks cause the noisy bars. Clean annual signals otherwise.
July 14, 2025 at 12:06 AM
Plot shows weekly normalized NWS issuance counts of TOR, SVR, and FF Warnings. Top panel is Iowa WFOs and the bottom panel is nationwide. For Iowa, small populations during winter weeks cause the noisy bars. Clean annual signals otherwise.
Chasecation day 10. Grand Island NE
July 12, 2025 at 1:29 AM
Chasecation day 10. Grand Island NE
Brought my IEM Dog and Pony Show to NWS Boulder. Thanks to my family for letting me moonlight whilst on vacation.
July 11, 2025 at 5:15 PM
Brought my IEM Dog and Pony Show to NWS Boulder. Thanks to my family for letting me moonlight whilst on vacation.
Chasecation day 5, patience pays off. About to blast up Pikes Peak and 0 meter the rain wrapped wedge.
July 6, 2025 at 11:13 PM
Chasecation day 5, patience pays off. About to blast up Pikes Peak and 0 meter the rain wrapped wedge.
Chasecation day 1. Life choices being made.
July 2, 2025 at 8:33 PM
Chasecation day 1. Life choices being made.
Getting old, bitter, jaded and other things, but it never ceases to amaze that the NWS still has no filters that prevent a product from getting disseminated like this one just now. They shunt this necessary QC work onto every end user that attempts to process their fire hose.
June 28, 2025 at 4:00 PM
Getting old, bitter, jaded and other things, but it never ceases to amaze that the NWS still has no filters that prevent a product from getting disseminated like this one just now. They shunt this necessary QC work onto every end user that attempts to process their fire hose.
Here's my unofficial accounting of sites with newly set extreme combinations of temperature, dew point, and sustained winds. Will be looking for more sites and certainly watch as this repeats tomorrow. Please let me know if you have candidates for the list, my website has no tool for this attm :(
June 22, 2025 at 2:21 AM
Here's my unofficial accounting of sites with newly set extreme combinations of temperature, dew point, and sustained winds. Will be looking for more sites and certainly watch as this repeats tomorrow. Please let me know if you have candidates for the list, my website has no tool for this attm :(
Given the current political climate, I find NOAA/NWS notices like this to be quite interesting/risky.
June 19, 2025 at 4:18 PM
Given the current political climate, I find NOAA/NWS notices like this to be quite interesting/risky.
Even larger blow up today.
May 30, 2025 at 6:53 PM
Even larger blow up today.