Public Information Statement
Issued by NWS Portland, ME

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NOUS41 KGYX 141913
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MEZ007>009-012>014-018>028-NHZ001>010-013-014-150000-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
313 PM EDT THU AUG 14 2014

...RECORD RAINFALL FOR PORTLAND MAINE...

THE PORTLAND JETPORT RECEIVED RECORD BREAKING DAILY AND HOURLY
RAINFALL ON 13 AUGUST 2014 FROM A NON-TROPICAL SYSTEM (A STORM
SYSTEM NOT ASSOCIATED WITH A TROPICAL STORM OR HURRICANE). THE NEW
DAILY RECORD RAINFALL AMOUNT FOR 13 AUGUST 2014 IS 6.43 INCHES.
PORTLAND PRECIPITATION RECORDS DATE BACK TO 1871. THIS RANKS AS
THE FIFTH HIGHEST AMOUNT OF PRECIPITATION FOR ANY CALENDAR DAY
(MIDNIGHT TO MIDNIGHT) AND IS THE HIGHEST AMOUNT OF PRECIPITATION
FOR ANY CALENDAR DAY THAT IS NON-TROPICAL BASED TO DATE. THIS WAS A
50 YEAR EXTREME PRECIPITATION EVENT FOR ANY CALENDAR DAY. THE
HIGHEST AMOUNT OF PRECIPITATION IN ANY CALENDAR DAY WAS DURING
TROPICAL STORM LILI IN 1996 WITH 11.74 INCHES.

RECORD HOURLY PRECIPITATION OCCURRED WITH THIS STORM SYSTEM
DURING THE HEAVY RAINFALL IN THE LATE EVENING HOURS. FROM 9 PM TO
10 PM...RAINFALL ACCUMULATION OF 2.57 INCHES OCCURRED CAUSING FLASH
FLOODING IN THE PORTLAND AREA AND SETTING A NEW HOURLY RECORD FOR
THE JETPORT. THE NEW RECORD SUPERSEDED THE PREVIOUS HOURLY RECORD
OF 2.08 INCHES ON 19 AUGUST 1991 THAT FELL DURING TROPICAL STORM
BOB. PORTLAND JETPORT HOURLY PRECIPITATION RECORDS DATE BACK TO
1948. THE ONE HOURLY AMOUNT OF 2.57 INCHES IS A 100 YEAR EXTREME
PRECIPITATION EVENT.

FROM 10 PM TO 11 PM...ANOTHER 1.64 INCHES OF RAIN FELL RESULTING
IN A CONSECUTIVE TWO HOUR TOTAL RECORD OF 4.21 INCHES SURPASSING
THE PREVIOUS RECORD OF 3.52 INCHES IN TWO HOURS DURING TROPICAL
STORM DAISY ON 6 OCTOBER 1962. THE NEW TWO HOUR PRECIPITATION
RECORD OF 4.21 INCHES IS A 200 YEAR EXTREME PRECIPITATION EVENT.

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