Death Valley records a low of 107°F (41.7°C): a world record

By: Dr. Jeff Masters , 1:31 AM GMT on July 16, 2012

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On Thursday morning, July 12, 2012 the low temperature at Death Valley, California dropped to just 107°F (41.7°C), after hitting a high of 128° (53.3°C) the previous day. Not only does the morning low temperature tie a record for the world's warmest low temperature ever recorded, the average temperature of 117.5°F is the world's warmest 24-hour temperature on record. According to weather records researcher Maximiliano Herrera, the only other place in the world to record a 107°F low temperature was Khasab Airport in the desert nation of Oman on June 27, 2012. The previous U.S. record high minimum temperature may be a 103°F (39.4°C) observed in Death Valley, California in 1970. The NWS lists a July 5, 1918 low temperature of 110°F as the official highest minimum temperature recorded in Death Valley. This temperature is disputed by Mr. Herrera, who says the temperature that night was not monitored and passed from 60°F to 110°F then to 60°F again.


Figure 1. Badwater, Death Valley, California. Wide open spaces, infinite views. What's not to love about this place? Image credit: Wunderphotographer SonomaCountyRAF.

Wednesday's high of 128°F (53.3°C) was the 10th hottest temperature in U.S. history, and the hottest temperature measured in the U.S. since July 18, 2009, when Death Valley recorded another 128° reading. The only hotter temperatures in U.S. history were all measured at Death Valley, the most recent one being the 129° measured on July 6, 2007. The all-time high for Death Valley is the 134° reading of July 10, 1913.

Temperatures have cooled considerably at Death Valley over the weekend, and the forecast for Monday calls for for a downright chilly high of just 110°. That's sure to be a disappointment for the ultramarathoners in the grueling Badwater Ultramarathon, which begins Monday in Death Valley. Covering 135 miles (217km) non-stop from Death Valley to Mt. Whitney, CA, it is the most demanding and extreme running race offered anywhere on the planet. I'm sure they would have liked to have had the distinction of running their race last Wednesday and Thursday, during the hottest 24-hour period ever recorded on the planet!

Jeff Masters

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786. maxcrc
8:12 PM GMT on July 22, 2012
Remark: What I disputed, in fact, it is not just a single temperature of Greenland Ranch in July 1918, but virtually all data from Greenland Ranch from its start in 1911 to at least the late 20s-early 30s.
There are dozens of minimum temperatures of 110F between 1922 and 1924, all clear bogus, that's where I found some absurde jumps in temperatures.
Data from Greenland Ranch starts to be very linear and reliable since late 30s, when the instrument was also slightly moved and likely its installation adjusted.
Maximiliano
Member Since: February 9, 2011 Posts: 0 Comments: 148
785. bigwes6844
7:26 AM GMT on July 17, 2012
tropics getting heated soon
Member Since: July 25, 2010 Posts: 0 Comments: 2510
784. wxmod
12:04 AM GMT on July 17, 2012
People say they know what these clouds are. Some are positive there is no such thing as weather modification or geoengineering. There are some who are adamant that ships could not produce clouds. One thing is for sure. There are tons of straight line clouds all over the ocean today and NASA or NOAA could easily send some boats out there to see what these clouds are made of. But they're not. Don't you wonder why?

Member Since: October 4, 2011 Posts: 0 Comments: 1725
783. wxmod
11:53 PM GMT on July 16, 2012
This is a satellite photo of the Pacific Ocean west of the USA. There are hundreds of clouds that go in straight lines and many people suggest they are contrails. But these trails are at sea level, according to infrared photos. Some people have also suggested that these trails are emissions from ships. NASA says they are ship emissions that have formed into clouds. The trails are up to a hundred miles wide and thousands of miles long. I would certainly wonder why no one has done a study of these trails or their particle content or their effect on the environment. It's just amazing that nothing is ever said about the incredible lack of information about something that is obviously important to the whole world.

Member Since: October 4, 2011 Posts: 0 Comments: 1725
782. Skyepony (Mod)
11:52 PM GMT on July 16, 2012
Quoting wxmod:


My hunch is that recycled plastic is being ground up and mixed with lowest grade bunker fuel and burned to propel ships. Most recycled plastic gets shipped to China. From there, who knows what happens to it. That would certainly make the smoke that creates huge clouds. It's pretty disgusting when it blows over the USA.
Out of sight and out of mind!


I don't think so. NOAA is flying over & gathering right out these ships + there is a few satellites that can see exactly what is being released..It's high Sulfates. Burning poly plastics pretty much releases H20, CO & CO2. PVC types release dioxins. Smaller amounts of fillers, colors & such but not a lot of sulfates.

Saw Alaska was suing EPA for forcing the cleaner fuels near shore & cruise ships for the most part aren't complying. Interesting Article..
Member Since: August 10, 2005 Posts: 161 Comments: 37153
781. hydrus
11:45 PM GMT on July 16, 2012
Quoting WunderAlertBot:
JeffMasters has created a new entry.
WonderBot is God.
Member Since: September 27, 2007 Posts: 1 Comments: 20322
780. wxmod
11:05 PM GMT on July 16, 2012
Quoting Skyepony:


Totally agree. Improving harbor air pollution is atleast one step in the right direction. Have to wonder if lowest grades aren't being used more offshore since money will be lost using the more expensive stuff near shore though.


My hunch is that recycled plastic is being ground up and mixed with lowest grade bunker fuel and burned to propel ships. Most recycled plastic gets shipped to China. From there, who knows what happens to it. That would certainly make the smoke that creates huge clouds. It's pretty disgusting when it blows over the USA.
Out of sight and out of mind!
Member Since: October 4, 2011 Posts: 0 Comments: 1725
779. GeorgiaStormz
10:59 PM GMT on July 16, 2012
Apparently this was the aurora:
Member Since: February 11, 2012 Posts: 0 Comments: 9718
778. WunderAlertBot (Admin)
10:59 PM GMT on July 16, 2012
JeffMasters has created a new entry.
777. washingtonian115
10:53 PM GMT on July 16, 2012
Quoting Civicane49:
12z UKMET 120 hours

They all show a low coming off of Africa.
Quoting MAweatherboy1:
18z GFS:

I see a low in the BOC.
Member Since: August 14, 2010 Posts: 10 Comments: 16325
776. islander101010
10:50 PM GMT on July 16, 2012
florida.bahama.system.might.have.a.chance..might.be .a.yellow.tomorrow
Member Since: September 11, 2010 Posts: 1 Comments: 4259
775. MAweatherboy1
10:50 PM GMT on July 16, 2012
New blog!!

Fabio Weakening; Khanun Slowly Organizing
Member Since: February 11, 2012 Posts: 82 Comments: 7565
774. Civicane49
10:47 PM GMT on July 16, 2012
12z UKMET 120 hours

Member Since: July 21, 2011 Posts: 83 Comments: 7167
773. Jedkins01
10:46 PM GMT on July 16, 2012
Quoting Grothar:


Hey, Jed. At one time, the Guiness World Book of Records had Tampa-St. Petersburg as the longest stretch of maximum sunshine days in the world. I don't know if they still hold the record. I think it was in the 60's that it occurred. It would be something if someone could find that fact out.

(That is the 1960's by the way)



I'm not sure, but we do live in a unique area, I rarely see completely overcast days, even days that we get 5 inches of rain often have at least a few hours of full sun. For example, although we have had nearly 9 inches of rain in the last week, we have also had a lot of sun, which I really like! Overcast "rainy days" are not my style. I like warm sunny tropical days with an intense tropical downpour or strong thunderstorm. We probably get as much sun during the rainy season as during the dry season, lol. When we get rain during the dry season it's usually from fronts which bring a lot more bark then bite, a lot of wind and a lot of clouds for 2 days often only to have one or 2 lines of thunderstorms pass through and then back to dry and breeze, and sometimes still cloudy, at least during the winter with "gulf effect" cold air clouds.

Member Since: August 21, 2008 Posts: 0 Comments: 7223
772. GeorgiaStormz
10:45 PM GMT on July 16, 2012
Quoting MAweatherboy1:
18z GFS:



strung out vorticity and the GFS tries to consolidate it into 3 lows.
idk about that
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771. MAweatherboy1
10:44 PM GMT on July 16, 2012
18z GFS:

Member Since: February 11, 2012 Posts: 82 Comments: 7565
770. wxchaser97
10:41 PM GMT on July 16, 2012
Member Since: March 16, 2012 Posts: 127 Comments: 7927
769. GeorgiaStormz
10:39 PM GMT on July 16, 2012
Quoting WxGeekVA:


I would like fewer storms for a number of reasons.
1. ....

LOL who am I kidding I love seeing a lot of storms as long as they aren't killing people or destroying a lot of stuff.

And wait a second my GF posted on here? Haha I was letting her see something different and I guess she took the liberty to post... At least it wasnt anything too bad!


i guard my phone with my life...
Member Since: February 11, 2012 Posts: 0 Comments: 9718
768. wxchaser97
10:38 PM GMT on July 16, 2012

MESOSCALE DISCUSSION 1477
NWS STORM PREDICTION CENTER NORMAN OK
0514 PM CDT MON JUL 16 2012

AREAS AFFECTED...E-CNTRL NV...SWRN UT...FAR NWRN AZ

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 162214Z - 162315Z

PROBABILITY OF WATCH ISSUANCE...20 PERCENT

SUMMARY...TSTM STRENGTH IS EXPECTED TO INCREASE SLIGHTLY DURING THE
NEXT FEW HOURS ACROSS E-CNTRL NV...SWRN UT AND FAR NWRN AZ. AS A
RESULT...THERE WILL BE AN INCREASED THREAT OF SEVERE WIND/HAIL.
ISOLATED NATURE OF THE THREAT IS EXPECTED TO PRECLUDE THE NEED FOR A
WW.

DISCUSSION...LATEST RADAR TRENDS SHOW A GRADUALLY INCREASING
STRENGTH IN MUCH OF THE CONVECTIVE ACTIVITY ACROSS THE CNTRL GREAT
BASIN. ICX VAD DEPICTS AN INCREASE IN 5-6 KM WINDS AS A SUBTLE
SHORTWAVE TROUGH PROGRESSES THROUGH THE BASAL PORTION OF A MEAN
TROUGH OVER MUCH OF THE WRN CONUS. AS A RESULT...LATEST MESOANALYSIS
SHOWS EFFECTIVE BULK SHEAR BETWEEN 20-30 KTS...WHICH IS SUFFICIENT
FOR MODEST STORM ORGANIZATION. LOW INSTABILITY /MLCAPE AROUND 1000
J/KG/ WILL LIKELY LIMIT OVERALL COVERAGE OF ORGANIZED CONVECTION BUT
A FEW CELLS SHOULD BE ABLE TO BRIEFLY ORGANIZE AND POSE A WIND/HAIL
THREAT. THE WELL-MIXED SUB-CLOUD LAYER...ESPECIALLY ACROSS SWRN
UT...WILL PRESUMABLY RESULT IN STRONG GUSTS AS THE PRIMARY SEVERE
THREAT. LIMITED COVERAGE OF SEVERE STORMS IS ANTICIPATED TO PRECLUDE
THE NEED FOR A WW.

..MOSIER/THOMPSON.. 07/16/2012
Member Since: March 16, 2012 Posts: 127 Comments: 7927
767. Grothar
10:37 PM GMT on July 16, 2012
Quoting Jedkins01:


Yeah I was seeing that, we had a lot of lightning around here too, and of course radar estimates are about half to a fourth of actual totals as usual. The radar says I had about a half inch today, I had near 4 times that... The estimate at St. Petersburg/Clearwater airport is 0.25 to 0.50, the actually rainfall total today there is near 2 inches, so if you are looking at radar estimates you would be highly deceived lol.


Hey, Jed. At one time, the Guiness World Book of Records had Tampa-St. Petersburg as the longest stretch of maximum sunshine days in the world. I don't know if they still hold the record. I think it was in the 60's that it occurred. It would be something if someone could find that fact out.

(That is the 1960's by the way)
Member Since: July 17, 2009 Posts: 68 Comments: 25051
766. Civicane49
10:37 PM GMT on July 16, 2012
Member Since: July 21, 2011 Posts: 83 Comments: 7167
765. wxchaser97
10:34 PM GMT on July 16, 2012
Member Since: March 16, 2012 Posts: 127 Comments: 7927
764. galvestonhurricane
10:33 PM GMT on July 16, 2012
Member Since: June 18, 2010 Posts: 0 Comments: 528
763. Civicane49
10:31 PM GMT on July 16, 2012
Member Since: July 21, 2011 Posts: 83 Comments: 7167
762. wxchaser97
10:30 PM GMT on July 16, 2012
Member Since: March 16, 2012 Posts: 127 Comments: 7927
761. stormchaser19
10:30 PM GMT on July 16, 2012
in 2004 the first formation of a cyclone was in july 31- august 6
and the season total was 15 TS - 9 Hurricanes- 6 majors

Right now we have 4-1-0 and we are in july 16
so, take it easy




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760. Civicane49
10:28 PM GMT on July 16, 2012
Member Since: July 21, 2011 Posts: 83 Comments: 7167
759. wxchaser97
10:28 PM GMT on July 16, 2012
Tuesday Mostly sunny and hot, with a high near 103. West wind 10 to 16 mph. Thats really close to my all time record high.
Member Since: March 16, 2012 Posts: 127 Comments: 7927
758. E46Pilot
10:22 PM GMT on July 16, 2012
Good chunk of Sahara dust on its way to FL. Should be pretty hazy and dry here in South FL on Wednesday.


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757. WxGeekVA
10:18 PM GMT on July 16, 2012
Quoting allancalderini:
next week the Atlantic will start to heat up as the GFS is showing a system or systems developing from a cold front.Hope it verifies 1 because I want something to track in the Atlantic as I am bored.2 because I like to track ts no matter form where it comes it doesn`t matter it forms from a cold front and 3 it help to increase the numbers for the season.


I would like fewer storms for a number of reasons.
1. ....

LOL who am I kidding I love seeing a lot of storms as long as they aren't killing people or destroying a lot of stuff.

And wait a second my GF posted on here? Haha I was letting her see something different and I guess she took the liberty to post... At least it wasnt anything too bad!
Member Since: September 3, 2011 Posts: 13 Comments: 3468
756. Civicane49
10:18 PM GMT on July 16, 2012
Member Since: July 21, 2011 Posts: 83 Comments: 7167
755. Civicane49
10:16 PM GMT on July 16, 2012
Blog update.
Member Since: July 21, 2011 Posts: 83 Comments: 7167
754. allancalderini
10:13 PM GMT on July 16, 2012
next week the Atlantic will start to heat up as the GFS is showing a system or systems developing from a cold front.Hope it verifies 1 because I want something to track in the Atlantic as I am bored.2 because I like to track ts no matter form where it comes it doesn`t matter it forms from a cold front and 3 it help to increase the numbers for the season.
Member Since: October 15, 2011 Posts: 0 Comments: 3952
753. Jedkins01
10:11 PM GMT on July 16, 2012
Quoting StormTracker2K:



These storms here NW of Orlando are putting out lots of CG's.


Yeah I was seeing that, we had a lot of lightning around here too, and of course radar estimates are about half to a fourth of actual totals as usual. The radar says I had about a half inch today, I had near 4 times that... The estimate at St. Petersburg/Clearwater airport is 0.25 to 0.50, the actually rainfall total today there is near 2 inches, so if you are looking at radar estimates you would be highly deceived lol.
Member Since: August 21, 2008 Posts: 0 Comments: 7223
752. BahaHurican
10:10 PM GMT on July 16, 2012
Quoting washingtonian115:
I'm surprised that no one is really paying attention to this blob?.Its an interesting feature.
It's raining on a whole bunch of us, which is prolly why we aren't talking much about it... lol... but I did ask earlier if the models had anything to say about it...
Member Since: October 25, 2005 Posts: 19 Comments: 21156
751. GeoffreyWPB
10:09 PM GMT on July 16, 2012
Quoting Grothar:


You know what they say about payback, Geoffrey!!! :)


Yes sir. I shall behave myself.
Member Since: September 10, 2007 Posts: 0 Comments: 10928
750. Grothar
10:07 PM GMT on July 16, 2012
Quoting GeoffreyWPB:


This was the post meant for you Grothar :)


You know what they say about payback, Geoffrey!!! :)
Member Since: July 17, 2009 Posts: 68 Comments: 25051
749. Grothar
10:05 PM GMT on July 16, 2012
Hello boys and girls.


Member Since: July 17, 2009 Posts: 68 Comments: 25051
748. GeoffreyWPB
10:04 PM GMT on July 16, 2012
Quoting washingtonian115:
I'm surprised that no one is really paying attention to this blob?.Its an interesting feature.


This was the post meant for you Grothar :)
Member Since: September 10, 2007 Posts: 0 Comments: 10928
747. Jedkins01
10:04 PM GMT on July 16, 2012
Quoting BahaHurican:
I can't help feeling that this will become the anomaly and the other years we've been seeing of late will become the "new normal". If nothing else, I think the PDO, with its larger scale swings than ENSO, may have more of an influence on these longterm patterns than we currently recognise.




We shall see...
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746. Grothar
10:03 PM GMT on July 16, 2012
Quoting washingtonian115:
That thing next to Florida looks good.


Thank you.
Member Since: July 17, 2009 Posts: 68 Comments: 25051
745. washingtonian115
10:00 PM GMT on July 16, 2012
I'm surprised that no one is really paying attention to this blob?.Its an interesting feature.
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744. BahaHurican
9:58 PM GMT on July 16, 2012
BTW, the heavy rain didn't materialize in my area... we got some sprinkles, is all. Over on the north side I think it rained a bit more.
Member Since: October 25, 2005 Posts: 19 Comments: 21156
743. WxGeekVA
9:55 PM GMT on July 16, 2012
hey y'all this is WxGeekVAs GF on his phone at the swim meet. I've heard a lot about this blog and the stuff you talk about and some cool people on here like Levi and tropical 13 who he talks to. y'all seem like a friendly bunch who like weather like he does! you all have fun!
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742. GeoffreyWPB
9:53 PM GMT on July 16, 2012
Member Since: September 10, 2007 Posts: 0 Comments: 10928
741. washingtonian115
9:51 PM GMT on July 16, 2012
That thing next to Florida looks good.
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740. GeoffreyWPB
9:47 PM GMT on July 16, 2012
Storms moving into the West Palm Beach area...

Member Since: September 10, 2007 Posts: 0 Comments: 10928
739. TropicalAnalystwx13
9:42 PM GMT on July 16, 2012
Quoting BahaHurican:
This has to be sarcastic...

I would hope so considering he's just an amateur at this like the rest of us and we don't go around bashing them.
Member Since: July 6, 2010 Posts: 112 Comments: 31317
738. BahaHurican
9:39 PM GMT on July 16, 2012
Quoting LargoFl:
might also be water temps in the shallow waters around the keys, guess they did their studies for a long time and found the keys as their number one spot
Similar shallow depths are found W off Andros, IIRC [something I would like to look up, actually]. ONly major dif that strikes me is proximity to Cuba, which, I suppose, could increase instability over the Keys....
Member Since: October 25, 2005 Posts: 19 Comments: 21156
737. BahaHurican
9:36 PM GMT on July 16, 2012
Quoting StormTracker2K:


Those guys at the NWS in Miami are not the best forecasters just saying.
This has to be sarcastic...
Member Since: October 25, 2005 Posts: 19 Comments: 21156
736. LargoFl
9:35 PM GMT on July 16, 2012
storms almost on top of you miami, heed your warnings
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.