What are the standard upper-air observation times?

The standard times of upper-air soundings taken for synoptic purposes are 0000, 0600, 1200, and 1800 UTC. If only two upper-air soundings are taken per day for synoptic purposes, they shall be taken at 0000 and 1200 UTC.

Table of Contents

Where can I find skew T charts?

GOES Skew-T Station List

ARIZONA. KAPR Apron Crossing, AZ. KFLG Flagstaff, AZ.
ARKANSAS. KBVX Batesville, AR. KBLN Berlin, AR.
COLORADO. KALS Alamosa, CO. KBOL Boulder, CO.
FLORIDA. KBKV Brooksville, FL. KFMY Fort Myers, FL.
GEORGIA. KABY Albany, GA.
HAWAII. 1Z6 French Frigate Shoals, HI.
IDAHO. KBOI Boise, ID.
ILLINOIS. KPNT Aurora, IL.

What is a sounding chart?

Charts show soundings in several ways. Numbers denote individual soundings. These numbers may be either vertical or slanting; both may be used on the same chart, distinguishing between data based upon different U.S. and foreign surveys, different datums, or smaller scale charts.

What are soundings in weather?

A sounding, for our use, is a vertical atmospheric temperature or moisture profile derived from radiance measurements. The radiance measurements are from a variety of instruments flown on weather satellites. NESDIS currently generates soundings from geostationary and polar weather satellites.

What do you do if you find a radiosonde?

If the radiosonde is found after use, the person who discovers it can put it in the bag (no postage required) and give it to his/her mail carrier. The instrument is then sent to a reconditioning center so it can be reconditioned and reused. (Only about 15-20% of the instruments are ever found nationwide.

What to do if you find a radiosonde?

How do you read Skew-T?

Isobars are defined as “lines of constant pressure.” On a Skew-T chart, pressure, NOT height, is plotted on the y-axis, so isobars are simply parallel to the x-axis. Because pressure decreases more slowly with height the higher you go, pressure is plotted in a logarithmic fashion on Skew-T charts.

What are the sounding analysis images created by the Storm Prediction Center?

Thanks for your interest in the web-based sounding analysis images created by the Storm Prediction Center (SPC). These images have been developed to help field forecasters across the United States in real-time sounding analysis and diagnosis. These images are created using a sounding analysis software package used by SPC, called NSHARP.

What is the observed sounding archive?

Observed Sounding Archive This page shows current and recent observed radiosonde data in skew-t format. An archive of seven days of data will always be available. The images are created using a sounding analysis program called NSHARP.

When will my sounding data flow to this site?

Sounding data will flow to this site as early as HH:30 after the hour, and will also re-run old hours to fill in late data. NOTE: This data is experimental and may not always be available in a timely fashion. NEW!! – Sounding Help Page Available

Where can I find more details on the web-based sounding analysis images?

More details can be found by clicking on item. Thanks for your interest in the web-based sounding analysis images created by the Storm Prediction Center (SPC). These images have been developed to help field forecasters across the United States in real-time sounding analysis and diagnosis.