Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
ASK TOM WHY: What's the highest dew point ever recorded? - Chicago Weather Center (http://blog.chicagoweathercenter.com/2011/07/ask-tom-why-whats-the-highest-dew-point-ever-recorded.html - broken link)
Anyway the heat index goes crazy once out of the hot yet somehow usual conditions. Though a 35C dew point must be really suffocating. Must cause breathing problems or something.
Location: The western periphery of Terra Australis
24,544 posts, read 56,060,466 times
Reputation: 11862
Quote:
Originally Posted by dhdh
Trimac20, I'm pretty sure it is impossible to have 40°C with 100% RH - that would be a 40°C dewpoint, that's way too high !
However you are right about Hong Kong, apparently it can rain at more than 27°C there - at least that's what it seems : EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, AUGUST 2011
August 16 had a minimum temp of 28.1°C, yet 8.5mm.
Similarly, the minimum on Aug 31 was 28.7°C with 0.5mm of rain (but that's quite a low rainfall amount so it's not exactly relevant)
Stumbler., you will see that generally in India, the hottest months are right before the advent of the monsoon, e.g. May in Delhi when it peaks at 40°C, but as you say that's generally dry months.
I went a few times to Delhi and I noticed there are two kind of days (around July) : dry, sunny 40°C; and 27°C heavy rain.
Well I meant at that level of the atmosphere where the clouds are, which would be obviously less than 40C (alot less). I used to think rain required a RH of 100% at ground level but that's not the case at all.
Now HEAVY rain at high temperatures is rare, but light rain at hot temperatures well over 30C isn't uncommon.
Location: The western periphery of Terra Australis
24,544 posts, read 56,060,466 times
Reputation: 11862
Quote:
Originally Posted by Rozenn
^^ Yep the highest dew point ever recorded was "only" 35C/95F in Dhahran, Saudi Arabia. Nice HI at that moment, 78C/172F. Great beach weather lol.
I dunno for the hottest rain, was thinking about northern India at the beginning of the monsoon too.
Personally I witnessed some droplets from mid-altitude clouds at 34C/93F in Paris, no proper rain though.
The BOM recorded a dewpoint of 32C at Wongan Hills in March last year during Cyclone Bianca. It must be a near Australian record. I believe it, though, temperature range something like 24-38C for that day with RH in the 80s. It's EXTREMELY rare though, we usually get dry heat.
The highest temperature I have witnessed where there was also measurable rain occured in Corvallis OR on 7/23/2006.
The day started out with high clouds which lowered and thickened as the morning wore on. A light rain began to fall about 10 AM with the temperature already at about 90 (32) degrees. The rain was never very heavy and there was no trace of thunder; in fact it had dialed back to a drizzle at about 1 in the afternoon when my thermometer topped 100 (38).
The temperature didn't climb much farther, it held steady at about 102 (39) until 5 PM or a little after when the rain quit and the sun made a feeble attempt to come out.
I have experienced rain and 100 + temperatures before; in the Hudson Valley and the Arizona desert, but this was the first time that I saw rainfall under conditions where the temperature remained at or above 100 degrees for an extended period of time.
We ended up with about a quarter inch of rain out of this and got two more days following of 100+ temperatures.
I just heard about this on the Weather Channel. This is the article from Weather Underground. Evidently rain fell at 115 in Needles California setting a world record. Not much even reached the ground but it's still rain.
Whats weird about the rain in florida is that it actually does feel warm. It feels like water in the shower. Which when I first seen it I thought was weird. When we get rain in the 20's here it isn't quite the same thing. It probably has something to do with the upper air temperature.
The city of Albury-Wodonga, on the New South Wales / Victoria border had a thunderstorm this afternoon while the temp was over 43C / 109F
Here's the data from this afternoon. The city recorded a substantial 12.4mm (half an inch) of rain, but the temp didn't drop below 26C, there is rainfall accumulation even as the temp is well above 30C. I find this quite impressive for a proper rainfall both in amount and duration.
Probably like 21c. When it rains here the temperature always plummets to like 14c.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
