WASHINGTON — The five named tropical storms recorded in July were the most on record for that month, and worldwide it was the second warmest July on record, the National Climatic Data Center reported Tuesday.
In the United States it was the 12th warmest July on record, with the national average temperature 1.5 degree Fahrenheit above normal for the month.
The West was most affected by the excessive heat in July from the 11th to 27th. More than 200 cities broke daily high temperature records, with Denver, Colo., having its second warmest July since 1872 and equaling the all-time highest daily temperature record of 105 degrees.
Las Vegas, Nev., equaled its all-time record daily maximum temperature of 117 degrees, and had five consecutive days with temperatures exceeding 115.
U.S. rainfall was about average for the country as a whole, with unusually dry conditions across the Rockies, High Plains and the Mid-to-Upper-Mississippi Valley. There was above average wetness in the Southeast, in large part related to landfalling tropical storms.
Tropical Storm Cindy formed early on July 5 and then moved northward to make landfall near Grand Isle, La. Heavy rainfall and inland flooding accompanied Cindy as it tracked northeastward across the eastern U.S.
When Tropical Storm Dennis formed, also on July 5, it was the earliest date on record for a fourth named storm. Dennis grew into the earliest category 4 hurricane on record and made landfall near Pensacola, Fla., on the 10th, spreading heavy rainfall inland.
July also included Emily and Franklin. The formation of Tropical Storm Gert on the 24th made it a record five storms in the month.
Worldwide, the average temperature for July was 1.08 degrees above normal in records dating back to 1880, the second warmest July on record. The warmest was in 1998 with readings 1.17 above average for the month.
Record low for sea ice
Land surface temperatures were warmer than average in Scandinavia, much of Asia, North Africa and the western U.S., while below average temperatures occurred in northern Canada and northern Alaska.
Sea ice across the Northern Hemisphere oceans, as measured by satellites, was lowest on record for July. For the last nine years, sea ice has been below the monthly mean for July. Sea ice generally reaches an annual minimum in September.
For the period January-July the average temperature of the planet was 1.06 degree above average, third warmest on record. The warmest was 1998 at 1.24 degree above normal.