Severe

* WHAT...Flooding caused by an ice jam is possible. * WHERE...Kalskag and Kwethluk * WHEN...Until 8 PM AKDT this evening. * IMPACTS...Ice jams may result in flooding of rivers, creeks, sloughs, and other low-lying flood prone locations. Water may impound behind a jam which may cause flooding several miles upstream. * ADDITIONAL DETAILS... - For Kalskag: As of this morning (Monday), the River Watch Team reports that an ice jam is still in place near Lower

The National Weather Service in Sioux Falls has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 9 PM CDT Tuesday. * AFFECTED AREA...In Iowa, Lyon, Osceola, Dickinson, Sioux, O'Brien, Clay, Plymouth, Cherokee, Buena Vista, Woodbury and Ida. In Minnesota, Lincoln, Lyon, Murray, Cottonwood, Nobles, Jackson, Pipestone and Rock. In Nebraska, Dixon and Dakota. In South Dakota, Beadle, Kingsbury, Brookings, Gregory, Jerauld,

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED LATE TUESDAY MORNING THROUGH EARLY TUESDAY EVENING OVER WESTERN THROUGH SOUTHERN MINNESOTA... .Temperatures rising into the 70s on Tuesday along with relative humidity values dropping under 30 percent, strong northwest winds of 25 to 35 mph with gusts to 40 mph and dry fuels will produce hazardous fire weather conditions. Humidity values will be lowest in the middle to late afternoon hours, which will also coincide with the

* WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 110. Major Heat Risk. * WHERE...The greater Phoenix Metro area. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free cooling center, transportation, water, and more. http://www.maricopa.gov/heat

* WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 112 expected. Major Heat Risk. * WHERE...In Arizona, Parker Valley and Yuma. In California, Chuckwalla Valley, Imperial Valley, and Palo Verde Valley. * WHEN...Until 8 PM MST /8 PM PDT/ this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.

* WHAT...Dangerously hot conditions. Afternoon temperatures 103 to 112. Major Heat Risk. * WHERE...Southwest corner of Imperial County, Western Imperial County, and Salton Sea. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. An Extreme Heat Warning means that a period of very hot

... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF CENTRAL TO SOUTH CENTRAL SOUTH DAKOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM CDT Tuesday. * AFFECTED AREA...In South Dakota, Hughes and Lyman. * WINDS...Northwest 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that ignite will spread rapidly and become

The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM CDT Tuesday. * AFFECTED AREA...In South Dakota, Campbell, Walworth, Potter and Sully. * WINDS...Northwest 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. A Red Flag Warning means that critical fire weather conditions

... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF CENTRAL TO SOUTH CENTRAL SOUTH DAKOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM CDT Tuesday. * AFFECTED AREA...In South Dakota, Hughes and Lyman. * WINDS...Northwest 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that ignite will spread rapidly and become

The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM CDT Tuesday. * AFFECTED AREA...In South Dakota, McPherson, Brown, Edmunds, Faulk, Spink, Hyde, Hand and Buffalo. * WINDS...Northwest 25 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. A Red Flag Warning means that critical fire weather conditions