Hottest rain on record? Rain falls at 115°F in Needles, California

By: Dr. Jeff Masters , 3:19 PM GMT on August 15, 2012

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A searing heat wave rare even for the Desert Southwest sent temperatures soaring to record levels on Monday, with Needles, California tying its record high for the date of 118°F (47.8°C). The temperature might have gone higher in Needles, but a thunderstorm rolled in at 3:20 pm, and by 3:56 pm PDT, rain began falling at a temperature of 115°F (46.1°C). Most of the rain evaporated, since the humidity was only 11%, and only a trace of precipitation was recorded in the rain gauge. Nevertheless, Monday's rain at 115° in Needles sets a new world record for the hottest rain in world history. I don't think many people were outside to experience to experience the feeling of rain falling at 115°, but if they were, it must have been an uncomfortable, sauna-like experience! Thanks go to Dr. Warren Blier of the NWS Monterey office for pointing out this remarkable event to me.

It is exceedingly rare to get rain when the temperature rises above 100°F, since those kind of temperatures usually require a high pressure system with sinking air that discourages rainfall. Monday's rain in Needles was due to a flow of moisture coming from the south caused by the Southwest U.S. monsoon, a seasonal influx of moisture caused by the difference in temperature between the hot desert and the cooler ocean areas surrounding Mexico to the south. According to weather records researcher Maximiliano Herrera, the previous record for hottest rain, which I blogged about in June, was a rain shower at 109°F (43°C) observed in Mecca, Saudi Arabia on June 5, 2012 and in Marrakech, Morocco on July 10, 2010. The 11% humidity that accompanied Monday's rain shower at 115° in Needles was the lowest humidity rain has ever occurred at anywhere on Earth in recorded history, according to Mr. Herrera.


Figure 1. True-color MODIS satellite image of California and Arizona taken at 1:25 pm PDT August 13, 2012. Developing thunderstorms surround Needles, CA, and the line of clouds to the southwest of the city would develop into a thunderstorm that brought rain to the city at 4 pm PDT, at a temperature of 115°F. Image credit: NASA.

A "very rare" heat wave for Phoenix
The heat wave that brought Needles' record hot rain has broken an exceptional number of heat records in Phoenix, Arizona the past two weeks. According to the Phoenix NWS office, the "almost unbearable heat" of the first two weeks of August is a "very rare" event, and August 1 - 14, 2012 was the warmest such 2-week period in city history. The average temperature on August 6 - 13 was 100°F or higher each of the eight days, tying the record for most consecutive days with an average temperature of 100°. The temperature peaked at 116° on August 8, just 6° below Phoenix's all-time record of 122° set on June 26, 1990. The forecast for Phoenix call for a bit of relief--highs are expected to be a relatively modest 105° today, and down near 100° by Friday.


Figure 2. Morning satellite image of 93L over the Central Atlantic.

93L close to tropical depression status
A large tropical wave (Invest 93L) is located in the Central Atlantic about 700 miles east of Bermuda. Satellite loops this morning show a surface circulation has formed, and heavy thunderstorm activity has increased to the point where 93L should be considered a tropical depression, if the heavy thunderstorms can persist through this afternoon. Wind shear is light, and ocean temperatures are warm, near 28°C. The latest Saharan Air Layer Analysis from the University of Wisconsin shows that 93L has moistened its environment considerably, and dry air should no longer be a significant impediment to development. The 8 am EDT run of the SHIPS model predicts that wind shear will remain in the low range through the weekend, and I expect this system will become Tropical Storm Gordon by Friday. The storm will not affect Bermuda, but residents of the Azores Islands should keep an eye on 93L, which could pass through the islands as early as Sunday night. In their 8 am Tropical Weather Outlook, NHC gave 93L an 80% chance of becoming a tropical depression by Friday morning.

Elsewhere in the tropics
In the Gulf of Mexico, a fall-like cold front is expected to stall out early next week, and the GFS model is predicting something could start to spin up near the Texas/Mexico border on Monday. Wind shear is predicted to be low to moderate, and cold fronts stalled out over the Gulf of Mexico often serve as the seed for tropical storms.

Most of the models predict development of a new tropical wave off the coast of Africa 6 - 7 days from now.

Jeff Masters

Haboob #7 (nukegm)
Another dust storm rolling into town.
Haboob #7
Strike over the Lake. (weathercts99)
A stunning bolt of lightning over a lake in Chandler.
Strike over the Lake.

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I'm going to try and post that arc of rain:Linkimg src

Well, nope, that didn't work! Try pasting this in your browser window then:

I give up... For today!
Member Since: Posts: Comments:
Quoting KoritheMan:
Just did a blog on TD8.

Sounds Gr8
;)
Member Since: October 3, 2010 Posts: 40 Comments: 4129
803 TropicalAnalystwx13: Ever been on an interstate after a blizzard?
Ain't nothing peaceful and tranquil about that.


Can't think of a single thing other than a medical emergency that would justify going out for a drive shortly after a blizzard...
...unless one is an emergency services worker: physician, nurse, EMT, ambulance driver, police, fireman, electricity lineman, phone lineman, etc.
Member Since: August 21, 2007 Posts: 0 Comments: 4860
Just did a blog on TD8.
Member Since: Posts: Comments:
Quoting HurricaneDean07:

I've grown considerably, in the last 2 years, and have seriously stepped up my knowledge and forecasting "Skill"(if I have any. lol)...
And here I am now... making DECENT predictions, in High school, and I'm off and running in my weather career :)

How the heck did I get three comments in a row?
Dang, the blog is DEAD.
Member Since: October 3, 2010 Posts: 40 Comments: 4129
Quoting ncstorm:


I see these types of comments and wonder if people have such anguish with hurricanes, then why are you still living in hurricane prone areas?..

I have been through major hurricanes and I will go through them any day over a tornado that you may have 15 minutes of warning..so yes, a tornado is an extreme weather event that I wouldnt put myself through or live in an area like Kansas where you see them more than corn in spring..with a hurricane, you can prepare and evacuate to shelter in reasonable time..Im not going to wake up tomorrow and find a Cat 4 off my coast as opposed to a tornado threat with less warning or preparation for..its weather..sometimes its good and sometimes its bad..


The three things I would rather not be near are 1) Earthquakes, 2) Tornadoes and 3) Volcano eruptions. I can deal with a hurricane, flood, severe T'storm, etc. At least I have fair warning they are coming. People don't give the National Weather Service enough credit. Sure not every thing works out and false alarms are sounded often, but I would rather have a false alarm over an F4-F5 killing my family with no warning.

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Quoting TropicalAnalystwx13:

Maybe not, but I'm a heck of a lot better than I was back then, lol. Just ask Gro or caneswatch.


i was an idiot when i was 12... happens to all of us. that is when courageousness meets stupidity... or for me scooter + 50 degree hill slope = broken bones and scooter lol
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Quoting HurricaneDean07:

Back then,
I lurked... My first full season was 08'...
and boy, when we got into 09' I was like
"2009 is going to have 24 Named storms 15 Hurricanes and 9 Major Hurricanes".
I look back at that thought, and slap myself in the face...
'Good times... Good times'

I've grown considerably, in the last 2 years, and have seriously stepped up my knowledge and forecasting "Skill"(if I have any. lol)...
And here I am now... making DECENT predictions, in High school, and I'm off and running in my weather career :)
Member Since: October 3, 2010 Posts: 40 Comments: 4129
Quoting TropicalAnalystwx13:

Maybe not, but I'm a heck of a lot better than I was back then, lol. Just ask Gro or caneswatch.

Back then,
I lurked... My first full season was 08'...
and boy, when we got into 09' I was like
"2009 is going to have 24 Named storms 15 Hurricanes and 9 Major Hurricanes".
I look back at that thought, and slap myself in the face...
'Good times... Good times'
Member Since: October 3, 2010 Posts: 40 Comments: 4129
Quoting TropicalAnalystwx13:

Hurricane Gordon of 2006.

Ironic, ain't it?
Member Since: October 3, 2010 Posts: 40 Comments: 4129
Quoting gulfbreeze:
You know it's dead talking about snow in August!!
Been over 100 for 3 to 4 weeks I only can dream about Snow, it never snows here in South Central Texas, if you see 1 flake people freak out, LOL.
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Quoting Dragod66:


you still dont :)

Maybe not, but I'm a heck of a lot better than I was back then, lol. Just ask Gro or caneswatch.
Member Since: Posts: Comments:
I just saw the strangest think I think I've ever seen on weather radar before; on the Wunderground Nexrad radar for August 15, 2012 there was a squall line that came across Mississippi just north of Columbia.

What was so odd was a thin ring of rain expanding to the south for several - at least 3 - hours and moving south towards New Orleans. This thin band of rain formed and remained a circumferential band for several miles.

I got out driving around with Stub, the wonder dog and noticed a tremendous line of altocumulus clouds to the south just about where the line was located on radar. If anyone would like to see it, it showed up on the New Orleans Nexrad radar 08-15-2012 starting about 16:00 CDT. It should show up in the archives.

I observed it with the "Clutter" switch in "Show" and "Hide" both. It also showed up in the 24-hour loop from archive.
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Quoting CosmicEvents:
I do have some hope. I've been following the ant reports for 8 years now here in posts and via PM. I can tell all of you that I've had enough verified reports from SE Texas that I feel I can issue my first ever ant advisory. It doesn't mean you'll get a cat5, but it does mean you'll get at least 5-10" of rain in the next 2-3 weeks at most. If the model verifies. We'll see.
No problem if I received that much rain but it will have to be in the right locations, they said it will take 2 major floods to fill up Lake Travis? Our overall water levels are very low so bring it on, this state could easily deal with tropical rains right now, the only wet area is in Southeast Texas where they are out of drought conditions.
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Quoting TropicalAnalystwx13:

I didn't behave two years ago to say the least, lol.


you still dont :)
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Quoting jascott1967:


Yeah, it has a snidey look about it. It's south of the main pocket of dry air.


Really watching this one.
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Quoting sunlinepr:


Got good news for all ....

The world is not going to end 2012... I just came from the supermarket and bought groceries that have an expiration date 1/1/2014...

Re: your loop....
Thats an interesting bunch of cloud leaping up out of the Guiana's.
Activity in the ITCZ !
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Quoting mikatnight:


Thx Gro, hope you're doin well. I'm just lurkin n watchin bits n blobs...



Doing fine. Wish you came on here more. We had some good days.
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Quoting allancalderini:
You are really young I thought you were 16.Right now I am 16 going to be 17 in November 1.


Same birthday as me. Fellow scorp. I was born 20 minutes after Halloween.
Member Since: August 16, 2007 Posts: 0 Comments: 614
Watch: Chinese broadcaster covers typhoon Haikui tied to rope

Link
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Quoting sunlinepr:


Got good news for all ....

The world is not going to end 2012... I just came from the supermarket and bought groceries that have an expiration date 1/1/2014...

That IS good news.
I bought some stuff the other day, and stamped on the package it proudly said

"Priced by hand". The 'by hand' part was writ large.

Someone in Marketing gets paid for this kind of thing????
Member Since: Posts: Comments:
Quoting TropicalAnalystwx13:

I didn't behave two years ago to say the least, lol.


LOL, I remember TA back then. We used to talk, but mostly privately. TA15's come a long way!
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Quoting Grothar:


Wow, you can't go anywhere these days. Good map mik!


Thx Gro, hope you're doin well. I'm just lurkin n watchin bits n blobs...

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Quoting Grothar:


This does look like the one to watch.


Yeah, it has a snidey look about it. It's south of the main pocket of dry air.
Member Since: August 16, 2007 Posts: 0 Comments: 614
Quoting bohonkweatherman:
Good Reason why South Central Texas has not had rain in over 30 days, humidity today ranged from like 13 to 30 percent within 100 miles of me. Temp only 102 today.
I do have some hope. I've been following the ant reports for 8 years now here in posts and via PM. I can tell all of you that I've had enough verified reports from SE Texas that I feel I can issue my first ever ant advisory. It doesn't mean you'll get a cat5, but it does mean you'll get at least 5-10" of rain in the next 2-3 weeks at most. If the model verifies. We'll see.
Member Since: Posts: Comments:
Quoting Grothar:


I think there were only 2 people who would talk to you. But I have to admit, you have come a long way and do some very good posts. But just for fun, remember this?

Behave TA?

I

don't

want

to! :P


I didn't behave two years ago to say the least, lol.
Member Since: Posts: Comments:
743 wunderkidcayman: Hey guys...there is something going on in the W Caribbean. Convection is building instead of falling due to D-MIN and there is a hit of circulation building. Upper level conditions are not bad: low shear, generally moist atmosphere.
I'm not saying it EX-TD.7 because the EX-TD is dead, but this is some of it energy and could create something kinda like when was it like 2010/2011 when we had TS Nicole. And I think it was TS Matthew after Matthew died, Nicole formed from it.
I'm not saying this will happen, I'm saying it could


And I'm not so sure Matthew died where it officially died.
After Matthew made its Honduras crossing then its 2nd landfall on southernBelize, the NHC.Advisory and the ATCF split on Matthew's position for 12 hours.
ATCF followed the center of convection mass westward into Campeche(state), while Advisory followed a ?center of circulation? north to a bit south of southernmost Yucatan(state).
Then the NHC.Advisory decided to go with the ATCF's positioning at it's next scheduled report.
~12hours later, "Nicole was born" at about where the NHC.Advisory had tracked the remnant Matthew-spin, a bit northeast of southernmost Yucatan.
ie 'Nicole' may have actuallly been Matthew all along.
Member Since: August 21, 2007 Posts: 0 Comments: 4860
Quoting KoritheMan:

I remember Lili because that was the first year I started tracking hurricanes. I recall the hype to New Orleans.


I was teaching special ed preschool and we were to go to the fair. I made special tshirts for each child in my class. They said 'I went to the fair'. Needless to say, we didn't, so we changed it afterward to 'I went(went crossed off to say 'was going') to the fair, but then Lili came.'
Member Since: Posts: Comments:


Got good news for all ....

The world is not going to end 2012... I just came from the supermarket and bought groceries that have an expiration date 1/1/2014...
Member Since: Posts: Comments:
Quoting mikatnight:



Map showing number of presidential disaster declarations related to flooding shown by county from 06/01/1965
to 06/01/2003.
Green areas represent one declaration,
yellow areas represent two declarations,
orange represents three declarations
red represents four or more declarations.
(USGS, 2006)


Wow, you can't go anywhere these days. Good map mik!
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Good Reason why South Central Texas has not had rain in over 30 days, humidity today ranged from like 13 to 30 percent within 100 miles of me. Temp only 102 today.
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Quoting Some1Has2BtheRookie:


Yeah. And look what happened! All the tilted posters went to your blog!

Well, maybe I was the only tilted one there, but that only proves that tilted people will post on your blog. ;-)


Now I'm debating whether or not I want to be known as "tilted" if I post on his blog....is this a good or bad thing?

Lindy
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Quoting MontanaZephyr:
A slow period, so

OFF TOPIC:


Reality Check: Obama Administration Refuses To Tell Judge If NDAA is Being Illegally Enforced
?

Link

(a 4 minute and 36 second video)


Can we PLEASE leave politics off the blog?!
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Quoting TropicalAnalystwx13:

Oh.....no....

Lol.


I think there were only 2 people who would talk to you. But I have to admit, you have come a long way and do some very good posts. But just for fun, remember this?

Behave TA?

I

don't

want

to! :P

Member Since: Posts: Comments:
First case of West Nile confirmed in Escambia County, FL (Pensacola). We are now under Mosquito Borne illness advisory
Member Since: Posts: Comments:
Quoting VirginIslandsVisitor:


I guess that's what we pay for when living in paradise, huh? You know though, you are right. In all honesty, I'd much rather deal with a sustained wind than the fury of a tornado. Last time we dealt with a system coming through here (can't remember the name at the moment - last year), it wasn't the actual named system but the tornado that came through in front of the villa that scared the ___ out of me more than the winds.

Lindy



Map showing number of presidential disaster declarations related to flooding shown by county from 06/01/1965
to 06/01/2003.
Green areas represent one declaration,
yellow areas represent two declarations,
orange represents three declarations
red represents four or more declarations.
(USGS, 2006)
Member Since: Posts: Comments:
Quoting Grothar:


This does look like the one to watch.
Keep an eye on the one behind it also.It has a low pres. center already.It will be interesting to see what the convection is going to do the next several days.
Member Since: Posts: Comments:
Quoting Grothar:


Where do you think I got it from? It's twue, it's twue.
rofl
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Quoting Grothar:


They should have known you when you were 12 :)

Oh.....no....

Lol.
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Quoting CosmicEvents:
That's what Lili Von Schtupp said in Blazing Saddles.


Where do you think I got it from? It's twue, it's twue.
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Quoting TropicalAnalystwx13:

Yeah...I get that a lot.


They should have known you when you were 12 :)
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Quoting Grothar:


What a nice guy!
That's what Lili Von Schtupp said in Blazing Saddles.
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You can not ,not live in a place being afraid of storms, i live on westbank of new orleans , even though we have the chance of hurricanes on the gulf coast , you move inland like kansas , oklahoma , illinois you take chance of tornadoes, you move to california you take chance of earth quakes , mother nature is gonna go anywhere it wants to and there is nothing you do but deal with it.
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Quoting ncstorm:



any other night, Kori I would deal with your always sarcasm but I dont feel like putting you in check as I always do so another night perhaps?





Not to argue here, but I don't see sarcasm in Kori's comment. This is where I choose to live, this is the life I've chosen, and frankly, I rather like the fact that I don't have to shovel the moisture falling from above! :)

Anyway, guys and gals, once again I'll thank the many of you that keep this blog so entertaining and interesting.

Lindy

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08L/TD/XX/CX
MARK
31.49N/55.33W
Member Since: July 15, 2006 Posts: 171 Comments: 53811
Looking nice.

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Quoting allancalderini:
Come on is not a bad thing when you are older you will want to be young again ;)

Lol.

Everybody grows up sometime.

Or you just become a Kori.
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Deleted
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About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.