Winter Storm Warning issued December 8 at 12:40PM MST until December 11 at 5:00AM MST by NWS Rapid City SD
* WHAT...Heavy snow expected. Total snow accumulations of 9 inches or more anticipated. Winds gusting as high as 45 mph. * WHERE...In South Dakota, Northern Black Hills. In Wyoming, Wyoming Black Hills. * WHEN...From 2 AM Monday to 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Heaviest snow and greatest accumulations are expected to occur at elevations above 5000 feet. A break in snowfall may occur Monday afternoon or evening before a second round of heavy snow.
Winter Weather Advisory issued December 8 at 1:58AM MST until December 9 at 4:00PM MST by NWS Rapid City SD
* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches with locally higher amounts possible. Winds gusting as high as 45 mph with areas of blowing snow. * WHERE...In South Dakota, Northern Black Hills. In Wyoming, Wyoming Black Hills. * WHEN...From 11 PM this evening to 4 PM MST Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning commute. Gusty winds could bring down tree branches.
Wind Advisory issued December 8 at 1:56AM MST until December 9 at 2:00PM MST by NWS Rapid City SD
* WHAT...Northwest winds 30 to 40 mph with gusts up to 55 mph expected. * WHERE...Portions of northwestern and southwestern South Dakota. * WHEN...From 11 AM this morning to 2 PM MST Monday. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.
Wind Advisory issued December 4 at 1:11AM MST until December 4 at 5:00PM MST by NWS Rapid City SD
* WHAT...Northwest winds 20 to 35 mph with gusts up to 50 mph expected. * WHERE...Mellette and Todd Counties, including portions of the Rosebud Reservation, Bennett, Tripp, and Southern Jackson. * WHEN...From 8 AM MST /9 AM CST/ this morning to 5 PM MST /6 PM CST/ this afternoon. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.
Red Flag Warning issued November 23 at 11:30AM MST until November 23 at 6:00PM MST by NWS Rapid City SD
...RED FLAG WARNING IN EFFECT UNTIL 6 PM MST THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 315... .Gusty southwest winds and very dry air are moving into parts of northeast Wyoming, and will lead to Red Flag conditions through the afternoon hours. Conditions should slowly improve this evening. The National Weather Service in Rapid City has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect until 6 PM MST this evening. * AFFECTED AREA...Fire Weather Zone 315 Southern Campbell. * WINDS...Southwest 20 to 30 mph with gusts
Rapid Response Seafloor Seismology
The new ocean-bottom seismographs record shaking with an accelerometer. Similar to the computer chips that measure motion in smartphones, this finger-nail-sized sensor can measure shaking in any orientation, removing the need for the large, complex, and power-consuming leveling systems used by traditional seafloor instruments. Combining the accelerometer with low-power recording electronics means the new instruments need less battery power, further reducing the size and weight of the instruments. The fleet currently has 10 instruments that measure 24 by 24 inches and weigh about 50 pounds. The instruments can be deployed for about 50 days in water up to ~4 miles