Warm, wet and all about barometric pressure

Good morning Augusta.

This morning it is partly cloudy with a chance of rain, then thunderstorms and a chance of rain in the afternoon. High of 82F. Winds less than 5 mph. Chance of rain 30%.

Tonight it will be overcast in the evening, then partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.

The readings from my own weather instruments are:

The humidity is  88% with a Dew Point of 68ºF and a temp of 72.5ºF.

Our wind direction is Southwest between 1.5 MPH and 3.0 MPH.  

Our Barometric pressure is  30.02 HPA 1014 and falling with a weather graphic indicating rain.

The UV rating is 0 out of 16, Sunrise is at 6:01 a.m. sunset is 7:15 PM and Moon Rise is at 12:01 p.m. EDT and the moon phase is waxing crescent.

For the pilots out there raw metar is:

METAR KAUG 011153Z AUTO 24003KT 3SM BR OVC002 21/21 A2996 RMK AO2 SLP143 70013 T02110206 10211 20200 52005 $

Visibility is 3.0 miles/4.8 Kilometers with overcast down to 200 ft / 60 m.

We received rain in the amount of 0.12 inches here over the past 24 hours.

AS we get deeper into hurricane season you will hear a lot about barometric pressure. Have you ever wondered what the highest and lowest recorded barometric pressure is, and what is considered "normal"?

Well, I looked that up for you.

Q: What are all the all-time records for high and low barometric pressure in the USA?

A: Using average sea level pressure of 29.92 inches of mercury (Normal) as a point for comparison, the highest barometric pressure ever recorded in the USA was 31.85 inches in Northway, Alaska, in January 1989. The lowest barometric pressure ever recorded was associated with the landfall of the Labor Day hurricane in Key West, Florida in 1935, which registered a minimum pressure of 26.35 inches of mercury. Both are also records for North America.

It is likely that tornadoes have had lower barometric pressures, but they have not become part of the official record. (yet)

Other parts of the world have had more extreme readings.

For example, the highest barometric pressure ever recorded on Earth was 32.01 inches, measured in Agata, U.S.S.R., on December 31, 1968. Agata is located in northern Siberia. The weather was clear and very cold at the time, with temperatures between -40° and -58°.

The lowest pressure ever measured was 25.69 inches, set on Oct. 12, 1979, during Typhoon Tip in the western Pacific Ocean. The measurement was based on an instrumental observation made from a reconnaissance aircraft.

An excellent reference for extreme weather records like this is Paul F. Krause's technical report Weather and Climate Extremes, the contents of which I haven't found anywhere online. The report can be ordered through the National Technical Information Service, which is part of the U.S. Department of Commerce.

 

Good morning Augusta.

This morning it is partly cloudy with a chance of rain, then thunderstorms and a chance of rain in the afternoon. High of 82F. Winds less than 5 mph. Chance of rain 30%.

Tonight it will be overcast in the evening, then partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.

The readings from my own weather instruments are:

The humidity is  88% with a Dew Point of 68ºF and a temp of 72.5ºF.

Our wind direction is Southwest between 1.5 MPH and 3.0 MPH.  

Our Barometric pressure is  30.02 HPA 1014 and falling with a weather graphic indicating rain.

The UV rating is 0 out of 16, Sunrise is at 6:01 a.m. sunset is 7:15 PM and Moon Rise is at 12:01 p.m. EDT and the moon phase is waxing crescent.

For the pilots out there raw metar is:

METAR KAUG 011153Z AUTO 24003KT 3SM BR OVC002 21/21 A2996 RMK AO2 SLP143 70013 T02110206 10211 20200 52005 $

Visibility is 3.0 miles/4.8 Kilometers with overcast down to 200 ft / 60 m.

We received rain in the amount of 0.12 inches here over the past 24 hours.

AS we get deeper into hurricane season you will hear a lot about barometric pressure. Have you ever wondered what the highest and lowest recorded barometric pressure is, and what is considered "normal"?

Well, I looked that up for you.

Q: What are all the all-time records for high and low barometric pressure in the USA?

A: Using average sea level pressure of 29.92 inches of mercury (Normal) as a point for comparison, the highest barometric pressure ever recorded in the USA was 31.85 inches in Northway, Alaska, in January 1989. The lowest barometric pressure ever recorded was associated with the landfall of the Labor Day hurricane in Key West, Florida in 1935, which registered a minimum pressure of 26.35 inches of mercury. Both are also records for North America.

It is likely that tornadoes have had lower barometric pressures, but they have not become part of the official record. (yet)

Other parts of the world have had more extreme readings.

For example, the highest barometric pressure ever recorded on Earth was 32.01 inches, measured in Agata, U.S.S.R., on December 31, 1968. Agata is located in northern Siberia. The weather was clear and very cold at the time, with temperatures between -40° and -58°.

The lowest pressure ever measured was 25.69 inches, set on Oct. 12, 1979, during Typhoon Tip in the western Pacific Ocean. The measurement was based on an instrumental observation made from a reconnaissance aircraft.

An excellent reference for extreme weather records like this is Paul F. Krause's technical report Weather and Climate Extremes, the contents of which I haven't found anywhere online. The report can be ordered through the National Technical Information Service, which is part of the U.S. Department of Commerce.