Official severe-weather alerts, warning areas, and disaster updates.
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Locations and boundaries are as supplied by each source. Area statistics without an exact location are placed at the Census center of their city, county or ZIP code and labeled approximate. Refer to official instructions for current conditions.
* WHAT...Temperatures as low as 33 can result in frost formation. * WHERE...Humboldt Coast, Southeastern Interior Humboldt, Coastal Mendocino, and Western Lake. * WHEN...Until 8 AM PDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. Take…
* WHAT...Visibility of one quarter of a mile or less in dense fog. * WHERE...South Laramie Range and Foothills including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 9 AM MDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headli…
* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 29 expected. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Trinity County, Northern Mendocino Interior, and Northern Lake. * WHEN...Until 8 AM PDT this morning. * IMPACTS...Frost and freeze conditions coul…
Some patchy fog is developing along the Savannah River based on satellite and web cameras this morning. Use caution when driving near the river this morning as visibility may drop quickly.
Thursday into the weekend, a series of low pressure systems will move toward Southeast Alaska, bringing widespread moderate to heavy rainfall and gale force winds to the Gulf. Strong winds are also expected for coastal and southern panhandle communities. While the exact timing and impacts of the system are still being …
...The Flood Warning continues for the following rivers in South Carolina... Congaree River At Congaree River at Congaree NP Near Gadsden affecting Calhoun and Richland Counties. Congaree River At Carolina Eastman affecting Calhoun, Lexington and Richland Counties. * WHAT...Minor flooding is occurring and moderate floo…
...The Flood Advisory continues for the following rivers in South Carolina... Congaree River At Congaree River at Columbia affecting Lexington and Richland Counties. * WHAT...Flooding caused by excessive rainfall continues. * WHERE...Congaree River at Congaree River at Columbia. * WHEN...Until late Wednesday night. * I…
...The Flood Warning continues for the following rivers in South Carolina... Congaree River At Congaree River at Congaree NP Near Gadsden affecting Calhoun and Richland Counties. Congaree River At Carolina Eastman affecting Calhoun, Lexington and Richland Counties. * WHAT...Minor flooding is occurring and minor floodin…
The combination of record-high temperatures and elevated humidity levels will produce heat index values in the upper 90s to near 100 degrees this afternoon across much of southeast Missouri, southwest Illinois, and far western Kentucky. Those planning to be outdoors for extended periods to should follow heat safety mea…
As temperatures drop below freezing, any wet spots that lingered through the day have begun to freeze creating some slick spots. Use extra caution during the morning commute or if you are out walking around as you may come across some icy spots.
* WHAT...Minor coastal flooding due to morning high tides around 7 feet in combination with surf 3-6 feet, with local sets to 7 feet. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Until 2 PM PDT today. * IMPACTS...Flooding of lots, parks, and roads during morning high tides with onl…
Areas of fog have expanded across north-central and northeast Wisconsin early this morning. The fog was locally dense in spots, with a visibility of 1/4 mile or less, especially along the Lake Michigan shoreline from Manitowoc to Door County. If you have travel plans early this morning, be on alert for rapidly changing…
* WHAT...Snow expected. Total snow accumulations of a coating to 3 inches for elevations up to 9,000 feet. Snow accumulations of 3 to 12 inches are expected across elevations of 9,000 feet and above. * WHERE...Wind River Mountains East and Wind River Mountains West. * WHEN...Until 6 AM MDT Wednesday. The time of maximu…
Some patchy dense fog will restrict visibilities to less than one mile across parts of north Georgia. The fog should lift after 10 AM. If driving this morning, slow down, use low-beam headlights and leave extra distance between you and the vehicle in front of you.
* WHAT...Minor saltwater flooding. * WHERE...Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists sh…
ESFGUM This Hydrologic Outlook is for Guam, Rota, Tinian, and Saipan. Invest 96W is still a broad, disorganized disturbance located about 300 miles north of Kosrae. Ensemble model guidance continues to show a passage anywhere between south of Guam to north of Saipan as a tropical storm or typhoon. Uncertainty is still …
Areas of fog developed early this morning across Door and Kewaunee counties. The fog was locally dense in spots, as the Sturgeon Bay Airport recorded a visibility of 1/4 mile. If you have travel plans early this morning, be on alert for rapidly changing or poor visibilities as low as 1/4 mile or less in spots. Plan on …
* WHAT...Visibility as low as one quarter of a mile in dense fog. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until noon MDT today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Below freezing temperatures may lead to a glaze of ice on surfa…
* WHAT...Snow. Additional snow accumulations between 5 and 10 inches. * WHERE...Ruby Mountains and East Humboldt Range in Elko County. * WHEN...Until 5 PM PDT Tuesday afternoon. * IMPACTS...Travel could be difficult. Slow down and use caution while traveling. The latest road conditions for the state you are calling fro…
* WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Esmeralda and Central Nye County. * WHEN...Until 10 AM PDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the …
Areas of fog have developed across portions of the Tennessee Valley this morning, especially in river valleys and near lakes. Visibility will be less than one-quarter mile at times. Slow down, use low beam headlights, and allow for extra distance between yourself and other motorists if encountering fog during the morni…
* WHAT...Visibility around a quarter of a mile or less in dense fog. * WHERE...Manitowoc County. * WHEN...Until 6 AM CDT early this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...The Manitowoc County Sheriff Department was reporting dense fog across the county. If dr…
* WHAT...Visibility as low as 1/4 mile in dense fog. * WHERE...Sheboygan County. * WHEN...Until 6 AM CDT early this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Worst visibility conditions are expected across the eastern half of the county. If driving, slow down, u…
Clear skies, light winds, and lingering low-level moisture are helping areas of valley fog to develop and become dense early this morning. This fog will continue to expand through the night but likely remain the densest in the valleys. Visibilities will be below a quarter of a mile at times in the thickest of the fog. …
* WHAT...Sub-freezing temperatures as low as 28 to 32 expected. * WHERE...Upper Hood River Valley County. * WHEN...Until 8 AM PDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Expect the coldest temp…
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