OttumwaSnomow

Wow!! 2.94" officially in 12 hours 4 am until 4 pm. Some brief downpours but moderate rain all day!!! Occasional thunder. On this system the models did well. Why? A stalling west to east cold from near mo/ia border never fails. It nudged north today thus the rain! It was fairly widespread in wapello county Iowa. 2026 is bringing the bacon to mby! Some deficits nearby but I am no doubt closing in on 30".

At 4 pm yesterday i felt wind changed to north here. That CF charged south undercutting the hot air. I knew at that point the good rains would be further south and not pella to iowa city line. It could still wobble north today, not likely. I havd 1 inch now. Thankfull! But once again nothing like models said for my county.

@Tom I hope this is correct. i was gonna post in July but my area got missed by the large ULL slowly passing thru Iowa thurs to Sat. After days of viritually every model, long and short range giving mby 1 to 4 inches I got .42" of basically rounds of drizzle! Oddly although many in my area has only had 1 to 2" past 5 weeks I seemed to catch every little popup!! Abiet they tiny buggers I got 3.94" in July. Bottom line this place is in a world of its own!!! Im now 100% convince wapello county Iowa has some weird microclimate! Some issue with lift that even the models cant figure out! For example: in July I had 2 big systems in the models. NWS gave me 70 to 90% chances of inches of rain! I only got .6 total on those 2 events. MOST OF MY RAIN FOR YEARS COMES ON DAYS WITH 20 TO 30% CHANCES!!! Im not kidding over many years my biggest rains of 1 or more inches come on days models thought almost nothing!! In fact my worst flood came in sept 2017 when we how very low chances of thunderstorms OTTUMWA GOT 8" round after round all night! The amount of warm season forecast from 70% to 100% that totally bust here would blow your mind. And dont buy what drought monitor is saying. Parts of wapello county now has cracks your foot would enter! Some ponds 10 ft low! While I know full well other parts of usa level 3 and 4 on drought monitor have had 8 to 10 inches in past 40 days!!!! And they are pushing 30 inches in 2026. Heres my take for this sys. Tues: i80 corridor Wed: north mo Seen this movie before!

Bring it on!!

This is why the darn asos needs fixed. Most (not all) use it for thier data, even long term historical climate data. What a joke. OTM/Ottumwa airport 13" in 2026 I have almost 24" coop observer and cocorahs. 3 gages in myb. They are accurate.

Today felt cool compared to Sundays horrific heat n humidity! Mby had 2 thundershowers with .19" which kept the numbers down slightly. Temp 94.6 Dewpoint 84.0 Heat index 121.0 Its unbelievable to say but it felt better than Sunday!

@Grizzcoat Is this legit? A all time high dewpoint record? And possibly a all time record hi low temp?

Dont think for a minute that the asos gages in iowa are accurate! OTM IS KNOWN BY ALL TO BE DEAD WRONG. NWS says theres no funds to calibrate it! Im 5 miles away a coop observer I have 23" precip in 2026 and OTM has 13".

79 dewpoint down here would feel great!! It was 77 dewpoint all night! Then 80 to 88 dewpoint all day. I even saw a 90 dewpoint in north Iowa!

Well it happened!!! Highest dewpoint of my life!!! And possibly highest heat index. Temp rose to 99.0F after the pic below. I saw another 88 Dewpoint in Iowa as well. 88.2F Dewpoint 137.7F Feels like 99.0F Temp

Yes you are a weather nerd! But thats okay! So are most of us on here! The mid atlantic is the worlds capitol for weather nerds, lol. It appears to me to go back to Ben Franklin, George Washington and Thomas Jefferson. I was born in Frederick, Maryland in our high school library we had many old old books from 1700s thru 1800s detailing the weather records of those forefathers. I poured over them! I remember a hail storm probably in 1700s that killed many people and livestock in baltimore! While folks in general are more serious weather hobbyist in that area, I was a freak! I often got mocked for sitting in library read weather stories or changing the tv channel 5 times to see pa/md/va tv weather men! But it was a nieghbor (Mr. VonEiff) that used to tell me about weather record keeping! His family took pride in being a long time coop observer in Unionville Maryland, his creekside location was often called "marylands icebox" since it had a extreme thermal situation on cool high pressure nights (similar to the York, PA airport west of York). In fact around aug 29th 1981 (need to look date up) his area had frost!!! But Mr VonEiff was best known for recording the WORLD RECORD 1 MINUTE RAINFALL!

After 18 days with just .58" on Friday pm I got a great rain! 2.46" on friday! I saw the slight spin on short term models 2 days previous. Progged to ride just south of iowa/mo border during daylight friday. I knew this could be a good setup! But nws and local media barely said boo! 20 to 30% by most outlets. Scattered cells bubbled up moving ene along the mo border. Then at 4 pm a cell blow up right over my land!!! Not large but .52" in 20 min. Nearly stationary! As soon as it nudged east it backbuilt over mby! The whole thing blew up moving east to west, with the spin in the perfect location! Rained about 5 hrs. Very heavy at times. One of my larger 1 day totals in years! Very thankful with the heat coming! KDMX - Digital Reflectivity 1, 6_30 PM.mp4 KDMX - Digital Reflectivity 1, 6_32 PM (1).mp4

I have just .58" in July! All the soaking, flooding rains stayed to my north, just as the worst rain was in missouri in June and west of me before that! Thankful for the beautiful rains so far this season, but it is just crazy how heavy rains can avoid this county!

2012 by far the hottest, most miserable summer of my life! The OTM thermometer simply was not reflective of the true temps in downtown Ottumwa Iowa along the Desmoines river (where the gages were located for many decades). The OTM site gets way more mixing of air and breezes is very flat area about 5 to 6 miles north of the river/downtown. As I recall on my gages and around the city of Ottumwa we saw: 20 days over 100F 60 days over 90F And I witnessed a 111F in friends shady yard. Myb had a 109F. And no significant rain June 20th thru Aug. I hope I never see a 2012 again!

12.57" Just incredible. I got .06" no rain in 11 days