July 2022 Observations and Discussions

[Hawkeye]

Hawkstwelve can have the derecho s***.  I just want heavy rain.

[Phil]

Looks like a wake low might be developing behind the derecho. Multiple obs show warming temperatures and continued strong winds behind the line.

This looks like a more classic progressive derecho vs the low topped one that roared through during the spring.

[hawkstwelve]

It has gotten quite dark here and the wind is starting to pick up as the derecho approaches from the ENE. 

Currently 86 with 71% humidity. 

[hawkstwelve]

Looks like Mitchell is experiencing some of it's strongest gusts now, well after the leading edge of the derecho has passed. A little backwards from what you would normally expect. 

Edit: Tornado Warning just posted. 

[bud2380]

51 minutes ago, Phil said:

This is in the bow head, moving right in @hawkstwelve’s direction.

https://www.weather.gov/wrh/timeseries?site=KHON&hours=72

Thanks for the link.  I have always wondered if there was a site with more frequent updates available but never knew it existed.  This is great information.  

[OttumwaSnomow]

Welcome to the Southeast Iowa "hell hole" as i call it in years like this. Today between  1 and 2 pm

Temp 99.7

Dewpoint 77.5

Real feel 114.2

In past 30 days a total  rain of .95

 Rain to south much of June and now ring of fire to north all week most likely.  Long range models are a total  joke here in summer. Its drought begets drought.  Much of our 1 inch rains in these drought summers come when nws  says 0 to 30%.. 

 

[Phil]

10 minutes ago, hawkstwelve said:

Looks like Mitchell is experiencing some of it's strongest gusts now, well after the leading edge of the derecho has passed. A little backwards from what you would normally expect. 

Edit: Tornado Warning just posted. 

Derechos are a unique beast. The real big ones often have some of the strongest winds in the rear inflow jet, towards the back of the precip shield.

[hawkstwelve]

The sky is the strangest color I have ever seen. A straight pea soup green with strong winds, hail, heavy rain, and frequent lightning.

Tried to get some good pics as it went overhead. Will post some later. 

[hawkstwelve]

Here's a quick one... 

[james1976]

Kinda wish I was back in IA today. Looks like storm potential. I'm in the TC but back to IA tomorrow.

[Andie]

We have a 5th season as well as California.  
Fire season is here.   
This was taken not a half mile from my house.   
It got a lot larger and jumped the road.  
Good times!

 

[Phil]

Real inflow jet incoming behind the squall. Get ready!

 

[hawkstwelve]

This is about 5 miles to my WNW...

 

[hawkstwelve]

Posted a few more pics over in the PNW thread.

It is extremely windy here. 98mph just to my NNW.

[weatherfan2012]

3 hours ago, Phil said:

Looks like a bust here today. Lots of crapvection and cloud cover. If anything interesting happens it’ll have to be a nocturnal MCS or some late development along the subsequent shortwave.

Muggy and cloudy, low 80s with dews in the mid-70s.

Edit: Upper 70s dewpoints now. Instant sweat drippage.

  Decent storms formed afterall some heavey rainers and even a tornado warning in south A.A county.O wow someone saw a possable spin up apparently.

[hawkstwelve]

FSD has reached up to 80 mph.

 

[Phil]

1 minute ago, hawkstwelve said:

FSD has reached up to 80mph.

 

How’s the rear inflow jet treating u? Seeing a lot of 70+ obs.

[hawkstwelve]

3 minutes ago, Phil said:

How’s the rear inflow jet treating u? Seeing a lot of 70+ obs.

Unfortunately I haven't had the opportunity to setup my weather station in an area that is more susceptible to the elements. Plus I think a large hail stone damaged the anemometer at our rental townhouse. So my measurements haven't been as good. But judging by multiple fences, trees, potters, garbage cans, etc. I would say it's giving our neighborhood a pretty good beating. 

[Hawkeye]

The personal stations in far sw Sioux Falls are under an inch of rain.  The stations just north of Sioux Falls, under the rotating comma head, are well over 3".

[Phil]

5 minutes ago, hawkstwelve said:

Unfortunately I haven't had the opportunity to setup my weather station in an area that is more susceptible to the elements. Plus I think a large hail stone damaged the anemometer at our rental townhouse. So my measurements haven't been as good. But judging by multiple fences, trees, potters, garbage cans, etc. I would say it's giving our neighborhood a pretty good beating. 

Which station do you have? If it’s a VP2 the ultrasonic anemometer might come in handy. It’s expensive but no moving parts reduces the risk for damage and need for maintenance.

[Timmy Supercell]

1 minute ago, Phil said:

Which station do you have? If it’s a VP2 the ultrasonic anemometer might come in handy. It’s expensive but no moving parts reduces the risk for damage and need for maintenance.

Advice you could give to Ashland, KY. Reminds me of the MCS on 6/13. As soon as the shelf cloud came over us, DWU stopped reporting the next 2 days.

[hawkstwelve]

15 minutes ago, Phil said:

Which station do you have? If it’s a VP2 the ultrasonic anemometer might come in handy. It’s expensive but no moving parts reduces the risk for damage and need for maintenance.

It's an Ambient WS2902-C. I like the sound of that ultrasonic anemometer though! Might have to see if Ambient has something like that. 

[Iowawx]

30 minutes ago, Hawkeye said:

The personal stations in far sw Sioux Falls are under an inch of rain.  The stations just north of Sioux Falls, under the rotating comma head, are well over 3".

How do you think this is looking for CR? Should we expect heavy rain and strong winds here?

[Hawkeye]

1 hour ago, Iowawx said:

How do you think this is looking for CR? Should we expect heavy rain and strong winds here?

Models really aren't too enthusiastic about much rain here.  They mostly show a quick-moving, moderate-strength line sweeping through our area later.  The heavy rain is up where the storms are training along the front.

Update:  I just checked the latest couple HRRR runs and they are more solid with the line around 11pm, have some decent rain.  We'll find out soon.

[Hawkeye]

Much of the energy of the MCS is focused over northern Iowa, as expected.  Central into sw Iowa is just getting some gusty outflow followed by weak, bubbly convection.

[snowstorm83]

Missed again in Lincoln, but the gust front moving through cooled things down nicely. 98 yesterday and 99 today with 105+ heat index. 

[Iceresistance]

I reached 101°F today, and the heat wave is only getting started.

[CentralNebWeather]

 

 

Got quite a storm in Holdrege and Phelps County in the last hour. My goodness. Close to 1.50” in about 45 minutes. 

[BMT]

Pretty intense gusts here on north side of marion.  Wasn’t expecting this based on how the line was looking.  60+ gusts easy

[Iowawx]

Winds have really picked up here as outflow boundary moved in. Winds easily gusting 50-55mph, some gusts around 60mph likely. 

 

[Hawkeye]

Reports of 60-70 mph in the Cedar Rapids area, but there was nothing like that here on the west side.  We probably gusted to 40+.

[Bellona]

As it rolled into Waterloo. Maybe gusted to 55?

[bud2380]

42 minutes ago, Hawkeye said:

Reports of 60-70 mph in the Cedar Rapids area, but there was nothing like that here on the west side.  We probably gusted to 40+.

Same here. I would guess 40mph at most. Rain wasn’t overly heavy either. 

[CentralNebWeather]

Few pictures from earlier this evening before the storm hit. 

[CentralNebWeather]

And now more storms have developed as of 10:30 pm. We can take it  

 

 

 

[Mr Marine Layer]

8 hours ago, hawkstwelve said:

Here's a quick one... 

Looks crazy

[Mr Marine Layer]

https://www.weather.gov/wrh/timeseries?site=KHON&hours=72

The thunderstorm knocked them out of commission.

[Tom]

Yesterday's events certainly delivered the goods for many of us on here.  It was fun tracking this 1st round of severe wx over the last week or so and trying to see which model would get it right.  For the most part, I recall several days they had this derecho/MCS event north but when all sudden done, it ended up farther south.  I'm sure there are many smiles this morning ...storms love to hug the Hot, Steamy and Bouyant airmass.  Some places just to my south reached highs close to 100F and DP's in the upper 70's.  It was hands down the most sultry day of this summer.

 

 

[Clinton]

Yesterday my high temp hit 98 and the max heat index was 108.  Very warm and muggy this morning, I could make a run at 100 today with dewpoints in the low 70s.  There is an outflow boundary in the area so maybe some scattered storms in the area this afternoon. 

[Tom]

The next round of a potential widespread MCS event is setting up to hit the same regions over NE/IA and into IL Wed-Thu.  Feast your eyes at this @OttumwaSnomow...you should end up doing good with this opportunity...

0z EPS...

 

Relief from the Hot and Humid days are cometh starting this Fri and into weekend around these parts and then the following week looks like a Top Notch stretch of summer wx.  I could see several days with highs in the 70's, sunny days and low DP's...

[Tom]

The CFSv2 continues to deliver a wonderful pattern for many on here as we progress through July and into Aug.  Widespread cool to seasonal temps.  It's going to score a coupe IMO.  Based on everything I'm researching and seeing...this makes a lot of sense.

 

I'll add to this post...if the JMA is right (again), the MJO forecast is heading towards Phase 2...

 

Phase 2 temp composite...sign me up!

[Andie]

On our way to 103 today.  
I’m setting water out for the lizards!  
Now that’s hot.  Had one at the door yesterday waiting for water like a puppy!
 

Galveston, Tx had a Low of 85!  Crazy. 

[Hawkeye]

I only got 0.16" of rain last night.  I hope Thursday can provide some widespread soaking rain.

[westMJim]

The official H/L at Grand Rapids yesterday was 87/70 there was 0.12” of rain fall and 45% of possible sunshine. The overnight low here at my house was a warm 71 and there was 0.03” of new rain fall here. For today the average H/L is 83/62 the record high of 104 was recoded in 2012 (I had a 108 at my house that day)

 

[CentralNebWeather]

Finished with 2.05” last night in 3 different rounds of storms. Farmer a mile north of me had 2.40” using the Davis Weather App. I am going to take a drive this morning to see about wind damage to corn. Winds were gusting over 75 mph for a time. 

[tStacsh]

Most of the rain missed south of my area as predicted.  Next wave should miss south as well on thursday.  Oh well.  Looks we "cool" off to the low 80's to mid 80's for the foreseeable future.  Brrrrr.. 

Unless the GFS is correct.  Then we really get HOT again in a week or two.  

[Hawkeye]

Most models are now favoring southern Iowa for heavy rain Thursday.

[CentralNebWeather]

My brother in law says about 5% of corn stocks were broken in his fields. I’m sure it will vary. Highs in the low 80’s today through Friday with more storm chances. Humidity is still high with all the rain we have had and the corn approaching 4-5’ in height and putting off moisture. 

[CentralNebWeather]

Video as the storm was approaching last evening here in Holdrege Nebraska. 1.5” of rain in 45 minutes or so and over 75 mph wind gusts with some minimal crop and tree damage. More storms and rainfall formed later in the evening, but weren’t severe  

 

[Tom]

7 minutes ago, CentralNebWeather said:

Video as the storm was approaching last evening here in Holdrege Nebraska. 1.5” of rain in 45 minutes or so and over 75 mph wind gusts with some minimal crop and tree damage. More storms and rainfall formed later in the evening, but weren’t severe  

 

 

I see your grass greened up nicely!  Love the look of the ominous shelf cloud.