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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Member Since: Posts: Comments:
1175. TXCWC
Quoting AtHomeInTX:


They were concerning runs for sure. I wonder if this is another case of the CMC and EURO catching up to the GFS. I need to wake up. Lol.



I think so - according to the latest from HPC they are saying 0Z GFS is LEAST reliable run at the moment - see prior post below :) If they are deeming it worthy to keep an eye on next week - we should to. :)
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1174. LargoFl
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1173. LargoFl
Quoting islander101010:
outbreak.of.west.nile..might.not.want.rain.till.w in ter
yes last night on the news they were warning everyone about it
Member Since: August 6, 2011 Posts: 4 Comments: 39349
outbreak.of.west.nile..might.not.want.rain.till.win ter
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1171. LargoFl
Quoting TXCWC:
NHC updated official discussion (in part) LOOKS LIKE THEY ARE STICKING WITH A SOUTH TEXAS LOW/STORM for now - note the bold as well: "...IN ADDITION TO THE CONFLICT WITH CONSENSUS... GFS BIASES ARE TOWARD EXCESSIVELY FAST PROGRESSION OF TROFS INTO RIDGES... FURTHER SUGGESTING THAT THE 00Z GFS IS THE LEAST PROBABLE SOLN THIS CYCLE...MODELS SHOW AN ILL-DEFINED AREA OF LOW PRESSURE NEAR THE WRN GULF COAST S OF TX... WITH A NUMBER OF ENSEMBLES ALSO INDICATING POTENTIAL FOR AT LEAST A WEAK SFC CIRCULATION. THE GFS HAS TRENDED AWAY FROM THE STRONGER DEVELOPMENT SEEN IN THE 00Z GFS RUN FROM 24 HRS AGO. THE EARLY PRELIM FCST REFLECTS YDAYS NHC/HPC
COORDINATED TRACK FOR A WEAK SFC LOW DRIFTING NWD TOWARD EXTREME SRN TX
BY THE END OF THE PERIOD."
..well if it stays weak like they think it will..that could be a good thing for texas..giving them some good rain
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1170. LargoFl
xcessive Heat Expected Thursday and Friday for Western Washington and Oregon

High temperatures on Thursday and Friday will range from the upper 80s to middle 90s for the coastal areas and middle 90s to the lower 100s for the interior lowlands. The hot conditions will impact the Seattle and Portland metro areas. Hot daytime temperatures and warm nights with combine to produce potentially dangerous conditions, including heat related illnesses. .................amazing how HOT this summer is..even way up there where those folks are not in any way used to those high temps, its cooler normally up there isnt it?
Member Since: August 6, 2011 Posts: 4 Comments: 39349
2012 Tropical Cyclone Activity
Accumulated Cyclone Energy
Updated Aug 16, 2012 11:00

BASIN CURRENT YTD

Western Pacific
88.845
North Atlantic
19.375
Eastern Pacific
58.87
Member Since: Posts: Comments:
1168. TXCWC
HPC updated official discussion (in part) LOOKS LIKE THEY ARE STICKING WITH A SOUTH TEXAS LOW/STORM for now - note the bold as well: "...IN ADDITION TO THE CONFLICT WITH CONSENSUS... GFS BIASES ARE TOWARD EXCESSIVELY FAST PROGRESSION OF TROFS INTO RIDGES... FURTHER SUGGESTING THAT THE 00Z GFS IS THE LEAST PROBABLE SOLN THIS CYCLE...MODELS SHOW AN ILL-DEFINED AREA OF LOW PRESSURE NEAR THE WRN GULF COAST S OF TX... WITH A NUMBER OF ENSEMBLES ALSO INDICATING POTENTIAL FOR AT LEAST A WEAK SFC CIRCULATION. THE GFS HAS TRENDED AWAY FROM THE STRONGER DEVELOPMENT SEEN IN THE 00Z GFS RUN FROM 24 HRS AGO. THE EARLY PRELIM FCST REFLECTS YESTERDAYS NHC/HPC COORDINATED TRACK FOR A WEAK SFC LOW DRIFTING NWD TOWARD EXTREME SRN TX BY THE END OF THE PERIOD."
Member Since: Posts: Comments:
1167. LargoFl
Quoting LargoFl:
..good for you..yes debbie surely is a bad word in florida, never saw so much flooding rains from a simple tropical storm..goes to show..any tropical system no matter how weak..can do alot of damage huh, does not have to be a massive hurricane.
Member Since: August 6, 2011 Posts: 4 Comments: 39349
Quoting TXCWC:


Looking at EURO that front seems to be what it wants to dev. the LOW from off TX/MEX...CMC as well... I think.


They were concerning runs for sure. I wonder if this is another case of the CMC and EURO catching up to the GFS. I need to wake up. Lol.

Member Since: August 24, 2010 Posts: 0 Comments: 248
1165. LargoFl
Quoting islander101010:
helping.n.florida.friends.this.wk.at.the.floodjam .. ..bad.word.up.there.is....debbie
..good for you..yes debbie surely is a bad word in florida, never saw so much flooding rains from a simple tropical storm..goes to show..any tropical system no matter how weak..can do alot of damage huh, do not have to be a massive hurricane.
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1164. LargoFl
Quoting trHUrrIXC5MMX:


A cat 2 Hurricane 110 mph slamming the Azores
..oh those poor people, 6 years later getting hit with the same named storm, maybe they will retire the gordon name?
Member Since: August 6, 2011 Posts: 4 Comments: 39349
Gordon is strengthening according to ADT.
CI# /Pressure/ Vmax
2.6 /1004.5mb/ 37.0kt


Final T# Adj T# Raw T#
2.6 2.9 2.9

Gordon likely to be 40 kts at next advisory.
Member Since: Posts: Comments:
1162. LargoFl
Quoting TXCWC:


Looking at EURO that front seems to be what it wants to dev. the LOW from off TX/MEX...CMC as well... I think.
...everyone along the whole gulf coast will have to watch for that, especially from texas north, this time of year they dont usually head over to florida from that area, we here need to watch those waves coming off africa huh
Member Since: August 6, 2011 Posts: 4 Comments: 39349
Quoting TXCWC:
So too sum up last nights runs...CMC, EURO, FIM, and FIM7 all show a low/storm off the TX/MEX or N.MEX area while GFS shows it a bit further south. In other words appears - right now anyway - a growing consensus among various models of some type of system trying to dev. in extreme Western Gulf (TX/MEX) by next week


Morning TX, all. Thanks for the recap. I only made it through the GFS last night.
Member Since: August 24, 2010 Posts: 0 Comments: 248
1160. VR46L
Gordon
In rainbow



Visable

Member Since: March 1, 2012 Posts: 0 Comments: 6927


A cat 2 Hurricane 110 mph slamming the Azores
Member Since: Posts: Comments:
1158. TXCWC
Quoting LargoFl:
..some of the guys say models sat something might form in the BOC..nothing there yet..we'll see, I think my 50% next week might be that front moving down


Looking at EURO that front seems to be what it wants to dev. the LOW from off TX/MEX...CMC as well... I think.
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helping.n.florida.friends.this.wk.at.the.floodjam.. ..bad.word.up.there.is....debbie
Member Since: Posts: Comments:
1156. LargoFl
Member Since: August 6, 2011 Posts: 4 Comments: 39349
neighbors.palm.tree.got.hit.last.night...burned.the .core.of.the.tree...it.was.red.hot.e.cen.fl
Member Since: Posts: Comments:
1154. TXCWC
So too sum up last nights runs...CMC, EURO, FIM, and FIM7 all show a low/storm off the TX/MEX or N.MEX area while GFS shows it a bit further south. In other words appears - right now anyway - a growing consensus among various models of some type of system trying to dev. in extreme Western Gulf (TX/MEX) by next week
Member Since: Posts: Comments:
1153. LargoFl
Quoting bigwes6844:
yeah but check out towards the end of the 7 day. 50% HMMM? something in the making?
..some of the guys say models sat something might form in the BOC..nothing there yet..we'll see, I think my 50% next week might be that front moving down
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1152. LargoFl
Quoting AussieStorm:
AccuWeather.com @breakingweather
MT @ginger_zee: More than 11,000 lightning strikes moving toward Milwaukee, Chicago and Peoria.
..gee simply amazing the lightning storms are this year, the other day we here got 3000 strikes in 20 minutes..cant imagine 11,000 gee
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1151. TXCWC
Intersting runs last night with some of the models. FIM - not FIM 7 :)- now spinning a BOC low/storm and brings it into Northern Mexico. CMC spins up a storm and brings it into S.TX. EURO continues with yesterday 12Z run by dev a low off the TX/MEX border area. GFS remains south of the abv 3 model guidances.

FIM 144hr...Link

By the way, the FIM7 - also at 144hr - VERY SIMILAR TO FIM - only shows low/storm at TX/MEX border area like EURO and CMC

CMC


EURO
Member Since: Posts: Comments:
Quoting stoormfury:
yes and it looks rather ominus and anxious times for the residents of the lesser antilles and northern caribbean.


At this time, GFS and EURO have it well north of the Lesser Antilles.
Member Since: Posts: Comments:
yes and it looks rather ominus, anxious times for the residents of the lesser antilles and northern caribbean.
Member Since: Posts: Comments:
Good morning. When GFS and EURO are latching on something similar,we have to pay very close attention.This is the case with the wave emerging now Africa that both develop.
Member Since: April 29, 2009 Posts: 75 Comments: 14344
AccuWeather.com @breakingweather
MT @ginger_zee: More than 11,000 lightning strikes moving toward Milwaukee, Chicago and Peoria.
Member Since: Posts: Comments:
Quoting MAweatherboy1:
Good morning. Gordon needs some convection on his south side:


He's a small storm. It has convection where it needs it. over it's centre.
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Good morning. Gordon needs some convection on his south side:

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morning
most of the 00Z global models are showing two back to back cyclones posing a serious threat to the lesser antilles in 10 days time. one of the waves is just coming off the african coast,the other is still over the african continent.
Member Since: Posts: Comments:
1142. VR46L
Quoting bigwes6844:
Poor Azores. Cat 1 when it hit in 06 and now it seems its gonna do the same thing this year. Now whats the odds of the same name storm happening to hit the same place six years later. one word WOW!
2006
2012


I cant remember that one ,get so many extropical storms but I dont like that track. It took sitting outside my doorstep for a week and a double hit .oh well thats Island living for ya!!!
Member Since: March 1, 2012 Posts: 0 Comments: 6927





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Good article, but the first line is wrong. we are not experiencing a drought in LA. The drought is in the midwest. Rainfall here has very little to do with river levels. That being said, this is presenting a problem downriver from New Orleans.



Quoting GTcooliebai:
This drought is getting pretty ridiculous now.

Salt creeping up the Mississippi River

Link

The drought has lowered the river, letting Gulf of Mexico water enter.

"The water's perfectly safe to drink, says emergency preparedness official, however, caution urged for dialysis patients and low-sodium dieters.

The salty water has traveled nearly 90 miles into the river.
Member Since: Posts: Comments:
Quoting bigwes6844:
yeah but check out towards the end of the 7 day. 50% HMMM? something in the making?

HMMMMMMMMMMMMM
ever though that that is normal for Tampa Bay, and they always have pop up summer storms?
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Member Since: Posts: Comments:
Member Since: Posts: Comments:
1136. VR46L
Quoting bigwes6844:
in other news the wave off africa that did some damage in africa is finally in the water. let's see what this thing does now that it is in the water.


I wish I knew how to post this in flash ,it looks very cool in flash.
Looks to be in real kind conditions for initial development

Member Since: March 1, 2012 Posts: 0 Comments: 6927
Member Since: Posts: Comments:
Good morning, all. I see we have Gordon now. Another hot day, already 80 degrees here, but with a good possibility of rain later today.
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Quoting bayoubug:
Good morning..Stupid question how do you upload again..

Right click the image you want to upload and click on copy image URL or copy image location, depending on your browser. Then above the comment box, click image and copy or CTR v and click ok.
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I guess this is what is left of ex-td7

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Good morning..Stupid question how do you upload again..
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Quoting LargoFl:
..That I havent learned yet, once in awhile it works, most often it doesnt..depends on the site..some of the guys gave me these sites to check out...here..........gearth.com/blog/.....and...Tro picalatlantic.com/satellite/#overlays....see if any of these help ok...good luck
cool thanks!
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Quoting LargoFl:
............................Looks like a normal rest of the week here around Tampa Bay...no big storms around us so far
yeah but check out towards the end of the 7 day. 50% HMMM? something in the making?
Member Since: Posts: Comments:
1128. LargoFl
Quoting bigwes6844:
morning largo! hey thanks again on the help on the copy and paste because i feel way better now. But one question how do you copy and paste when the picture is in motion?
..That I havent learned yet, once in awhile it works, most often it doesnt..depends on the site..some of the guys gave me these sites to check out...here..........gearth.com/blog/.....and...Tro picalatlantic.com/satellite/#overlays....see if any of these help ok...good luck
Member Since: August 6, 2011 Posts: 4 Comments: 39349
1127. LargoFl
............................Looks like a normal rest of the week here around Tampa Bay...no big storms around us so far
Member Since: August 6, 2011 Posts: 4 Comments: 39349
Quoting LargoFl:
..GOOD MORNING WES...yeah lets see what it does, could fall apart like some of the other waves,we'll see
morning largo! hey thanks again on the help on the copy and paste because i feel way better now. But one question how do you copy and paste when the picture is in motion?
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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.