Labor Day Heavy Rainfall in Ohio. Summer heat to snow out west

 Stalled front between 6am and mid afternoon created training of storms across most of northern Ohio.

Radar loop from 5am to 7pm Labor Day

More than 90% of northern Ohio received 1" or more (green or yellow colors) above

I calculated that more than 80 BILLION of gallons of rain fell over a 12 county area between 6am and 6pm. 

Labor Day's rainfall ranks 3rd all-time at Hopkins? 

Here is the top 30 rainiest days. I boxed in red the events that occurred in September.

Today's rain is exactly 24 years after the remains of Hurricane Fran passed over eastern Ohio setting our single day rainfall record of 4.59"

I dug up some of the NWS Cleveland forecast messages from the Iows Mesonet Database (check it out. It's a great resource) issued from that day in 1996:

8:30am message from NWS Cleveland on 9/7/1996

10:40am NWS message from NWS Cleveland on 9/7/1996

All of this here in Ohio doesn't compare to the dramatic changes parts of Colorado will go through weatherwise over the next 24 hours. Mid 90s to ower 30s with accumulating snow!

Per "Maxar_Weather" on Twitter: "...Years in which Denver recorded both a 100° high and measurable snow. The shortest time in between was 25 days in 1962, with 100°+ on 8/14 and snow measured on 9/8. Denver reached 101° on Saturday and is expected to record measurable snow three days later--Tuesday."

UPDATE: Upper 70s to Snow in 2 Days!

Sadly, the headline is correct.  After this insanely long winter, should we be surprised? Probably not. CLICK ON IMAGE BELOW FOR CURRENT TEMPERATURES AND WIND. Notice the drop already occurring to the west...

In anticipation of this huge swing last Friday, I dug up the occurrences of THIRTY DEGREE high temperature drops in TWO DAYS OR UNDER with at least one inch of snow in April. It was far from easy. After digging up the instances of snowfall, I had to cross reference the high temperature declines MANUALLY in each of those years. I say this not to complain--this kind of esoteric statistical research still needs to be done the old fashioned way--but to illustrate the work involved. So an hour of sifting through data results in only a few tidbits of blog trivia which fit nicely in two blocks below.  For me its worth it, as I hope it is for you.  Here are the results:

30 degree drop or more in 48 HOURS resulting in least 1" of snow:  5 TIMES

• 51 DEGREE DROP:  2007: 80 TO 29, 3" snow
• 38 DEGREE DROP:  1969: 82 TO 44, 1.5" snow
• 38 DEGREE DROP:  1921: 71 TO 33, 1.5" snow
• 32 DEGREE DROP:  1912: 64 to 32, 6.5" snow
• 30 DEGREE DROP:  1893: 71 to 41, 3.5" snow

30 degree drop or more in 24 HOURS resulting in at least 1" of snow: 4 TIMES

• 36 DEGREE DROP:  1972: 67 TO 31, 1.7" of snow
• 33 DEGREE DROP:  1940: 60 TO 27, 3.2" of snow
• 31 DEGREE DROP:  1982: 63 TO 43, 1.7" of snow
• 30 DEGREE DROP:  1988: 63 TO 43, 2.3" of snow

This drop will go from 78 Sunday to upper 30s Tuesday (48 hours) just shy of the 51 degree drop listed above. The 24 hour drop starting this morning (73 degrees to upper 30s) will be close to the ALL-TIME record one day drop set back in 1972 listed above!

I posted this map showing this potential more than a week ago illustrating the comparison to the snow event back in 2005.

Lake Erie is wide open meaning that some lake enhancement will occur tomorrow as the cold air filters in from the northwest.

The ground is warmer than a few weeks ago so a lot of melting will occur as the rain changes over to wet snow. That said, slushy accumulations will occur: