Thursday, February 28, 2013

NOAA and NASA's next generation weather satellite may provide earlier warnings

NASA: A new satellite that will detect the lightning inside storm clouds may lead to valuable improvements in tornado detection. The GOES-R satellite is currently being built with new technology that may help provide earlier warnings for severe weather. The national average is a 14-minute lead time to warn residents of a tornado, but NASA and NOAA scientists are looking to improve severe weather detection to save lives and property. They are developing the Geostationary Operational Environmental Satellite-R Series, or GOES-R, to observe thunderstorm development with much greater spatial and temporal detail than ever before. Severe weather knows no specific season and the new technology aboard GOES-R is expected to help provide earlier detection for warnings, whatever the time of year.

On Jan. 29 and 30, 2013, a winter-time tornado outbreak produced multiple tornadoes from the southern Plains states, across the Mississippi River Valley, eastward to the Mid-Atlantic. On Feb. 10, several tornadoes touched down in Mississippi, destroying 200 homes, damaging and causing injuries near Hattiesburg.

"These storms can spin up pretty quickly which limits warning lead-time," said NOAA scientist Steve Goodman. "The radar and storm spotter’s view of tornadoes reaching the ground can be blocked by terrain, or visibility is very poor when the tornado is wrapped in rain. And it's certainly more challenging for storm spotters to observe and confirm tornadoes occurring at night. Sometimes it's just plain hard to come up with enough advance warning."

For the first time, scientists will be able to detect the lightning occurring inside storm clouds, and thus better track how developing storms are moving and intensifying before and during the occurrence of severe weather, Goodman said, all of which will help meteorologists better predict weather disasters...

A powerful cold front moving from the central United States to the East Coast wiped out spring-like temperatures and replaced them with winter-time temperatures. On Jan. 30 at 1825 UTC (1:25 p.m. EST), NOAA's GOES-13 satellite captured an image of clouds associated with the strong cold front. The visible GOES-13 image shows a line of clouds that stretch from Canada to the U.S. Gulf Coast and contain powerful thunderstorms with the potential to be severe. Credit: NASA GOES Project

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