SPC – No watches are valid as of Wed Sep 18 03:00:02 UTC 2024
No watches are valid as of Wed Sep 18 03:00:02 UTC 2024.
Day: September 17, 2024
Snow cannons help save California ski resort from Bridge Fire devastation
As the Bridge Fire burned in southern California, Mountain High Resort utilized their snow cannons to help prevent the wildfire from burning down its ski facilities.
Stadium-sized asteroid buzzing by Earth Tuesday night at mere 620,000 miles away
A stadium-sized asteroid is making a close, but safe fly-by of Earth Tuesday evening, as just another reminder that space is full of flying rocks and Earth must remain on guard.
SPC Severe Thunderstorm Watch 676
WW 676 SEVERE TSTM KS 180005Z – 180400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 676 NWS Storm Prediction Center Norman OK 705 PM CDT Tue Sep 17 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southwest Kansas * Effective this Tuesday evening from 705 PM until 1100 PM CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible SUMMARY...A line of high-based thunderstorms will spread into southwest Kansas through the evening, posing a risk of locally damaging wind gusts. The severe thunderstorm watch area is approximately along and 35 statute miles east and west of a line from 55 miles north northwest of Garden City KS to 20 miles west southwest of Liberal KS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 674...WW 675... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24035. ...Hart
Tropical disturbance threat looms in Caribbean, Gulf of Mexico next week as Central American Gyre stirs
As tropical activity in the Atlantic Ocean quiets down again, attention is shifting back to the Caribbean and Gulf of Mexico, where there are increasing signs of atmospheric conditions favorable for the development of possibly the next named storm sometime next week.
100 bison relocated from Arizona national park in effort to manage overpopulation
As part of a relocation project that began in 2018, 100 bison were relocated on Friday from Grand Canyon National Park in Arizona to South Dakota.
Wasp larvae burst from adult fruit flies in gruesome new discovery
A recent study describes a new species of wasp that lays its eggs inside adult fruit flies, where the wasp larva grows and then rips through when born.
SPC Severe Thunderstorm Watch 675
WW 675 SEVERE TSTM CO KS NE WY 172055Z – 180300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 675 NWS Storm Prediction Center Norman OK 255 PM MDT Tue Sep 17 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast and East-Central Colorado Northwest Kansas Western Nebraska Eastern Wyoming * Effective this Tuesday afternoon and evening from 255 PM until 900 PM MDT. * Primary threats include... Widespread damaging winds likely with isolated significant gusts to 80 mph possible Isolated large hail events to 1 inch in diameter possible SUMMARY...High-based convection should gradually increase in coverage and intensity as it spreads northeastward across the central High Plains this afternoon and evening. Numerous strong to severe wind gusts should be the main threat with this activity, with the highest gusts potentially reaching up to 70-80 mph. The severe thunderstorm watch area is approximately along and 80 statute miles east and west of a line from 35 miles south southwest of Burlington CO to 60 miles north northeast of Torrington WY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 674... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24040. ...Gleason