Meteorological events that happened on September 30th:
Floods kill more people in an average year than do tornadoes or hurricanes. Of the over 100 people that die on average 60% of those are in their cars. Flowing water and moving cars don't mix. Water typically moves at 6 to 12 miles an hour in a flood.
The weight and speed of the flowing water give it more momentum than many think. For each foot the water rises it pushes on a car with another 500 pounds of force. More importantly, water is quite buoyant. Essentially, a car weighs 1500 pounds less for each foot of water flowing across a road. Water only two feet deep will carry away most cars.
Northern New England and southern Quebec were hit by an early season snowstorm. Kilkenny, NH received 6 inches and Hatley, Quebec recorded 10 inches.
Central Park in New York City, NY concluded its wettest month ever with 16.85 inches of rain.
Four inches of rain fell on the deserts of southern California as a result of a dying tropical cyclone that crossed Baja California and moved into southwestern Arizona. 1.23 inches fell at San Diego, their greatest September rainfall on record for the month.
The remnants of a weakening tropical cyclone produced rainfall of 4.38 inches at Tehachapi, CA in 7 hours causing flash floods on the Auga Caliente and Tehachapi Creeks resulting in 15 deaths. Las Vegas, NV reported 1.10 inches of rain.
A tropical storm that formed southwest of Bermuda moved to the northwest and into the Delmarva Peninsula overnight October 1 then dissipated in extreme northeastern Maryland as a depression. Atlantic City, NJ measured a gust to 78 mph and Cape Henry, VA gusted to 72 mph.
A tornado spawned by Hurricane Gracie in Ivy, VA took the lives of 11 people. The estimated intensity was an F3, which is unusually strong for a tornado formed by a hurricane.
An early season snowfall occurred over the Northern Plains with the greatest total of 4 inches falling in the New Ulm- Mankato area in Minnesota. Austin, MN had their earliest measurable snowfall with half an inch. Omaha, NE had its first September snow in 70 years.
Hurricane Ginger was a storm with no place to go. Since its formation on September 5th, it had been wandering around in the western and central Atlantic Ocean until landfall near Morehead City, NC on this date. It never was a particularly strong hurricane at any point with winds peaking at 105 mph but it was a hurricane for 20 days and was tracked until October 5th when it finally dissipated after moving back out over the western Atlantic. Ginger was tracked as a tropical system for 27 days, second as time as a tropical system only to Storm #3 of 1899 that was a tropical system for 27.75 days in the Atlantic Basin. The 20 days as a hurricane set a new record as well.
Lightning killed a 15 year old high school football player during practice. Fifteen players and three coaches were injured. Thirty to 50 players were on the field at the time. A light rain had just ended and there were no signs of lightning.
A thunderstorm brought Springfield, IL some of its heaviest short-term rainfall totals on record. 1.05 inches of rain fell in only 5 minutes. The 10-minute total was 1.42 inches, which grew to 1.5 inches by the end of the 15-minute period. Later in the day, severe thunderstorms produced $20 million damage in far east-central Illinois, around Danville; 30,000 acres of crops were destroyed by hail.
The temperature at Wichita Falls, TX soared to 108° to establish a record for September.
This was the eighth day of 29 consecutive days when no measurable rain fell at Chicago, IL. The only measurable rain for the month came on the 1st with 0.01 inches. This was their driest September on record. Rockford, IL only received 0.05 inches of rain; their driest month ever.
An early season snowstorm covered much of the Arrowhead Region of Minnesota with 7 to 9 inches of snow. Some snow depths reported for the event, which ended the next day, were 7 inches at Babbitt and Aurora, 7.5 inches at Isabella, and 8.5 inches at Poplar Lake.
Canadian high pressure built in behind the storm and strong cold front to bring record lows for the date. Record lows for September included: Laramie, WY: -2°, Cheyenne, WY: 8° and Dodge City, KS: 29°.
Daily record lows included: West Yellowstone, MT: 4°, Butte, MT: 13°, Bozeman, MT: 15°, Alamosa, CO: 15°, Lewistown, MT: 17°, Casper, WY: 17°, Sheridan, WY: 18°, Havre, MT: 19°, Missoula, MT: 20°, Lander, WY: 20°, Miles City, MT: 21°, Great Falls, MT: 22°, Kalispell, MT: 22°, Billings, MT: 23°, Choteau, MT: 23°, Colorado Springs, CO: 25°, Denver, CO; 25°, Clayton, NM: 28°-Tied, Grand Junction, CO: 32° and Lubbock, TX: 35°.
Thunderstorms, which had inundated northern sections of Oklahoma with heavy rain, temporarily shifted southward producing 4 to 8 inches rains from Shawnee to Stilwell. Baseball size hail and 80 mph winds ripped through parts of southeast Oklahoma City, and thunderstorm winds caused more than half a million dollars damage at Shawnee.
Afternoon thunderstorms in Michigan produced hail 1 inch in diameter at Pinckney, and wind gusts to 68 mph at Wyandotte. A thunderstorm in northern Indiana produced wet snow at South Bend.
Many cities in the northwestern U.S. reported record high temperatures for the date, including: Redding, CA: 104°, Sacramento, CA: 99°, Fresno, CA: 99°, Medford, OR: 98°, Quillayute, WA: 90°, Portland, OR: 88°, Eugene, OR: 88°-Tied, Astoria, OR: 86°, Olympia, WA: 83°-Tied and Seattle, WA: 81°.
Unseasonably warm weather prevailed over Florida, and in the western U.S. The afternoon high of 94° at Fort Myers, FL was their 10th record high for the month.
Record highs were tied at Fresno, CA: 99° and Medford, OR: 98° while a record high of 108° was recorded at Borrego Springs, CA.
Many cities reported record high temperatures for the date, as readings soared into the upper 80s and 90s from the Northern and Central Plains Region to Minnesota. Bismarck, ND reported a record high of 95° and the temperature reached 97° at Broadus MT.
Other record highs included: Tucson, AZ: 101°, Scottsbluff, NE: 94°-Tied, Valentine, NE: 94°-Tied, Miles City, MT: 93°, Rapid City, SD: 93°-Tied, Aberdeen, SD: 92°, Huron, SD: 92°, Pueblo, CO: 92°, Sheridan, WY: 91°-Tied, Townsend, MT: 86° and Colorado Springs, CO: 84°-Tied.
Afternoon thunderstorms developing along a cold front produced wind gusts to 60 mph at Wendover, UT.
The past month was the coldest September ever recorded in interior Alaska. Fairbanks averaged a frigid 31.7° which was 13.2° below normal and the first below freezing September ever. Beginning on the 9th and on every day for the rest of the month, a new record low was set for either low minimums or low maximums, or both. On this date, the city plunged to 3° to set a new all-time record low for September. Snowfall for the month totaled 24.4 inches which was more than three times the previous record for September. The late summer snows never melted. Plant foliage, still green, was frozen into place and week long power outages were widespread as whole trees bent over onto power lines due to the weight of the heavy snow.
A total of 16 tornadoes occurred during the entire month of September. This was the largest number of tornadoes occurring during the month of September in the latter half of the 20th century.
Black ice conditions caused a 90 vehicle pileup in Calgary, Alberta Canada closing Deerfoot Trail for 20 hours.
Phoenix, AZ had an average temperature for the month of 92.2°, the city's hottest September on record.
September is usually the most active month, but no one expected what happened this September. A record 8 named tropical cyclones occurred during the month, compared to the average of 3 to 4.
With a trace of snow hitting the ground, Grand Rapids, MI recorded its earliest occurrence of measurable snowfall, beating the old mark by a week.
Driven mostly by outbreaks from Hurricanes Frances and Ivan, 279 tornadoes were recorded for the month, by far the most tornadoes ever to occur in September in the U.S.
West Palm Beach, FL had its wettest month on record with 29.40 inches. Hurricanes Frances and Jeanne contributed most to the total.
A rare F1 tornado struck North Berwick, ME, causing damage to roofs, windows. Damaged totaled $125,000.
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