Hot rain falls on Saudi Arabia: highest temperature and humidity combo ever recorded in a rainfall

June 7, 2012SAUDI ARABIA - Pilgrims to the holy city of Mekkah (Mecca), Saudi Arabia must have been astonished on Tuesday afternoon, when the weather transformed from widespread dust with a temperature of 113°F (45°C) to a thunderstorm with rain. Remarkably, the air temperature during the thunderstorm was a sizzling 109°F (43°C), and the relative humidity a scant 18%. 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. However, on June 4, a sea breeze formed along the shores of the Red Sea, and pushed inland 45 miles (71 km) to Mekkah by mid-afternoon. Moist air flowing eastwards from the Red Sea hit the boundary of the sea breeze and was forced upwards, creating rain-bearing thunderstorms. According to weather records researcher Maximiliano Herrera, this is the highest known temperature that rain has fallen at, anywhere in the world. He knows of one other case where rain occurred at 109°F (43°C): in Marrakech, Morocco on July 10, 2010. A thunderstorm that began at 5 pm local time brought rain at a remarkably low humidity of 14%, cooling the temperature down to 91°F within an hour. Thunderstorms often produce big drops of cold rain, since these raindrops form several thousand meters high in the atmosphere, where temperatures are much cooler than near the surface. Some drops even get their start as snow or ice particles, which melt on the way to the surface. Additional cooling of the drops occurs due to evaporation on the way down. However, in the case of the June 4, 2012 Mekkah storm, I think the rain was probably more like a hot shower. Thus, the thunderstorms’ raindrops would have been subjected to 100 seconds of some very hot air on the way to the surface, likely warming them above 100°F by the time they hit the ground. With the air temperature a sizzling 109°F (43°C) at the time of the June 4 thunderstorm in Mekkah, the raindrops could easily have been heated to a temperature of over 105°F (41°C) by the time they reached the surface! On Saturday, June 2, the temperature in Mekkah hit 51.4°C (124.5°F), a new record for the city, and just 1.1°F (0.6°C) below the all-time hottest temperature record for Saudi Arabia (125.6°F, or 52°C, recorded at Jeddah on June 22, 2010.) I expect that 20 – 40 years from now, we’ll begin seeing occasional cases where rain falls at a temperature above 117°F (47°C) in the desert regions of North Africa and the Middle East. –Wunderground
contribution by Lilia M. B.
About these ads
This entry was posted in Climate unraveling, Dust Storm, Earth Changes, Earth Watch, Extreme Weather Event, Time - Event Acceleration. Bookmark the permalink.

12 Responses to Hot rain falls on Saudi Arabia: highest temperature and humidity combo ever recorded in a rainfall

  1. wibbys1 says:

    Starting to get an uneasy feeling–sitting here on my patio, it’s a cool 70F, a nice breeze blowing and then I read of the weirdness going on in the rest of the world. I’m thinking, “ok dear Lord we are not that much more special, but you know what, if we’re doing something right, PLEASE let us keep doing it!!!!

    • Turk says:

      I thought Riyadh, Saudi Arabia had the worst climate until I moved to Arkansas! 92 degrees at 11:00 PM! wondering what it is they are doing wrong.

  2. Pauly says:

    Cold air aloft. Ice age on the way. What was the level of precipitation formation? Look at a sounding from the NWS @ Miami, FL in the summer and see temps -10 f @ 30,000 ft. All convective precip. above 20,000 starts as snow, anywhere on the globe.

  3. FRANK says:

    I AGREE WITH YOU PAULY. I HAVE SEEN WIERD WEATHER THAT CAN ONLY BE EXPLAINED AS SOMETHING IS GOING ON UP IN OUR ATMOSPHERE. THE MAGNETIC FIELD OF OUR LITTLE BLUE PLANET IS CONTRACTING DUE TO THE BELOW AVERAGE SUN ACTIVITY. IT IS REGULATING OUR PLANET LIKE A THERMOSTAT. LESS ACTIVITY, EQUALS LESS ATMOSPHERE, THUS LETTING IN MORE COLD INTO OUR UPPER ATMOSPHERE. EVENTUALLY THIS WILL CATCH UP WITH US AND BAD EVENTS WILL OCCUR UNFORTUNATELY. :(

  4. jason's papa says:

    It’s a good thing they don’t get hurricanes. Imagine a 145 mph sandstorm.

    • Reuben L Sushman says:

      Actually a Hurricane (Typhoon) hit the city of Muscat in Oman a few years back causing wipespread damage while the temperature was well over 100 deg. F (before dropping significantly).

  5. Andy says:

    the pilgrimage is not until October lol

    • Edgar says:

      That is the major pilgrimage (Hajj), there are always pilgrims in Makkah performing the lesser rites (‘Umrah).

  6. Bob says:

    That is hot but that is not that hot. Here in the in the desert southwest during our summer monsoons it gets that hot and it we still get out thunderstorms. The rain is warm at the beginning but it cools down.

  7. Robert F. Wiren says:

    Its really curious that this record was broken only a few weeks later in California. I have never seen anything like this year’s weather in the mid-west US. I just read Bill McKibben’s essay in Rolling Stone on global warming- everyone should… Bob

  8. Tyler says:

    i didnt know rain could fall that hot

All comments are moderated. We reserve the right not to post any comment deemed defamatory, inappropriate, or spam.

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s