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What is ice fog?

Published: Wednesday, December 14, 2016 @ 4:35 PM

Here in the Miami Valley we see all kinds of weather phenomena, including freezing fog and ice fog. While the two have similar dynamics, they do vary a bit.

Fog that turns to ice upon contact with a solid surface that has a temperature of 32 degrees Fahrenheit or less is known as freezing fog. This often occurs on elevated surfaces such as trees, power lines, bridges and overpasses. 

Ice fog is fog that freezes mid-air, simply because temperatures are so cold. The fog is not able to live long enough as water vapor and touch a solid surface before it crystallizes. 

Ice fog is not something that is often seen, and it only occurs while conditions are very cold and winds are light. The ice fog is noticed as a shimmering fog, often times referred to as frost flakes.

Heavy rain, flooding threat ends

Published: Friday, June 23, 2017 @ 4:07 AM
Updated: Friday, June 23, 2017 @ 11:00 PM

The remnants of Tropical Storm Cindy brought heavy rains and record daily rainfall of nearly 3 inches on Friday in Dayton, Storm Center 7 Meteorologist McCall Vrydaghs said. The record is 2.78 inches, which beats the previous record of 1.04 inches set in 1896. So far this month, 6.19 inches of rain has fallen over Dayton.

Overnight, it dries out and clouds break, Vrydaghs said. Much drier air builds in, which will reduce humidity towards morning. Overnight lows will be around 60 degrees.

Track the latest conditions on Live Doppler 7 Interactive Radar

QUICK-LOOK FORECAST  

  • Cooler, less humid this weekend
  • Slight chance for stray shower Saturday, Sunday
  • Warming up midweek

RELATED: County-by-County Forecasts 

DETAILED FORECAST 

Saturday: Sun and some scattered clouds are expected, though it will be cooler than normal and less humid with highs in the upper 70s. It will be windy at times with gusts over 20 mph. There is a slight chance of a stray shower across the north in the afternoon. Saturday night will be partly cloudy and cool with lows in the middle 50s.

RELATED: Sky Witness 7

Sunday: Partly cloudy skies are expected, and it still will be breezy and cooler with highs in the middle 70s. There is a slight chance of a passing shower into the afternoon/early evening. 

Monday: This will be the coolest day of the week with highs around 70 degrees under partly cloudy skies. Again, there is a slight chance a passing shower late day.

Tuesday: Sunshine and a few clouds move in with highs in the middle 70s. 

Wednesday: It will be sunny and warmer with highs around 80 degrees.

Tornado Facts and Safety

Published: Friday, June 23, 2017 @ 5:44 PM



Cultura RM Exclusive/Jason Perso/Getty Images/Cultura Exclusive

Tornado Facts

Tornadoes can range in intensity. Wind speeds are measured on the Enhanced Fujita scale, which was implemented in February of 2007:

  • EF0 = 65 – 85 mph winds
  • EF1 = 86 – 110 mph winds
  • EF2 = 111 – 135 mph winds
  • EF3 = 136 – 165 mph winds
  • EF4 = 166 – 200 mph winds
  • EF5 = Over 200 mph winds


Tetsuya Theodore "Ted" Fujita (1920-1998) developed the original Fujita Tornado Intensity Scale. The scale was changed to the “Enhanced” Fujita Scale in 2007, after more information about the destructiveness of tornadoes had been scientifically examined. The estimated wind speeds were updated, and more specific damage requirements were set. Tornadoes are now measured AFTER damage has been assessed, days after a tornado strikes.

The size of a tornado is not necessarily a measure of its intensity. Larger tornadoes can be weaker and less violent than smaller tornadoes that have more intense winds. Tornadoes in the EF0-EF2 range are much more likely to develop than stronger ones, but all tornadoes can be deadly. Following these tips could save your life.

Tornado safety tips

1. Have a plan in place:

  • Know in advance exactly what to do when a tornado nears.
  • Know where to take shelter in seconds.
  • Practice home tornado drills with your entire family.
  • Have your kids draw a picture of their home with their “safe place.”

2. The best shelter is a tornado shelter, or an interior room like a closet or bathroom on the lowest level of your home, away from glass or windows.

  • Bring pillows and blankets to cover yourselves from falling debris and wear bike helmets to protect your head.
  • Have a flashlight and a battery-operated radio to take into your shelter with you.
  • You may even turn your television volume up loud enough so that you can hear severe weather alert updates.

3. If you live in a mobile home:

  • Get out!
  • Find the nearest shelter, like a neighbor’s house.
  • If no other shelter is available, it is safer to lie down, as low as you can, such as in a ditch, outside, covering your head with your hands.
  • Even if your mobile home is tied down it is not a safe place during a tornado.
4. If you’re in your car:
  • Get out!
  • Find shelter in a sturdy building. If you don’t see one, find a ditch away from trees and other cars.
  • Lie down in the ditch with your hands covering your head.
  • If there’s no ditch, find an open area of land away from trees and cars. Lie flat on the ground and cover your head with your hands.

Tropical Storm Cindy remnant brings flood threats, heavy rains 

Published: Thursday, June 22, 2017 @ 5:33 AM
Updated: Thursday, June 22, 2017 @ 10:30 PM

>>INTERACTIVE RADAR: Track weather in your area

Clouds thicken overnight with a few scattered showers and storms developing towards morning, Storm Center 7 Meteorologist McCall Vrydaghs said. This is due to the remnants of Tropical Storm Cindy moving in from the south and meeting up with a cold front approaching from the northwest. Overnight it will stay muggy with temperatures in the lower 70s.

Ahead of the approaching storm, a Flash Flood Watch was issued by the National Weather Service. It goes into effect at 2 a.m. Friday through 2 a.m. Saturday for Butler, Champaign, Clark, Clinton, Darke, Greene, Logan, Miami, Montgomery, Preble, Shelby and Warren counties in Ohio and Wayne County in Indiana.

RELATED: Flash Floods--What you need to know to stay safe

QUICK-LOOK FORECAST

  • Scattered showers, storms develop overnight
  • Heavy rain and storms likely Friday
  • Flash Flood Watch 2 a.m. Friday to 2 a.m. Saturday

Friday: A cold front from the northwest will meet up with tropical moisture from the south creating a wet and stormy day. Rain, heavy at times, and thunderstorms develop through the morning and become steady into late morning/afternoon. Localized heavy rain may lead to flooding, specifically flash flooding with rapid rise in water creating dangerous road conditions. Rain totals ranging between 1 to 3 inches with isolated spots potentially up to 4 inches are possible by Friday evening. Along with the flooding threat, some storms may produce isolated damaging wind gusts. Temperatures will range in the 70s.

The cold front should shift the moisture south and east as we head into Friday evening, so it should dry out by late Friday night. 

RELATED: Will Tropical Depression Cindy impact Dayton Air Show?

RELATED: Dayton traffic from the WHIO Traffic Center 

RELATED: County-by-County Forecasts

LOOKING BEYOND FRIDAY INTO WEEKEND

The heavy rain and strong winds should be out of the area by Saturday, making way for a nice weekend of low humidity and seasonable temperatures. 

Saturday: Sun and some scattered clouds are expected along with breezy conditions at times. Highs will be below normal in the upper 70s. The UV Index will be high, so if you head to the Vectren Dayton Air Show apply and reapply sunscreen through the afternoon. 

Sunday: Partly cloudy and cooler conditions are expected, and it will be breezy at times with highs in the middle 70s.

Monday: It will be partly sunny with the slight chance of a passing shower and highs in the lower 70s.

Tuesday: Sun and a few clouds are expected with highs in the middle 70s.

RELATED: Sky Witness 7

Tornado flattens buildings near Birmingham, Alabama

Published: Thursday, June 22, 2017 @ 5:54 PM

Liquor bottles remain untouched on a shelf after a possible tornado touched down destroying several businesses, Thursday, June 22, 2017, in Fairfield, Ala. (AP Photo/Butch Dill)
Butch Dill/AP

A tornado damaged several businesses outside Birmingham, Alabama, onTuesday.

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Meteorologist Jason Holmes said buildings, including a liquor store and a fast-food restaurant, in the suburban community of Fairfield, west of the city, were reported damaged.

Holmes also told The Associated Press that trees were down and buildings were reported damaged along the Interstate 20 corridor on the southwestern outskirts of Birmingham.

Photographs on social media showed what appeared to be a funnel cloud in the air in the Birmingham area.