Active pattern ahead from the Plains, eastward

A series of disturbances crossing the northern half of the nation will remain the focus for widespread showers and thunderstorms from the northern Plains to the Mid-Atlantic States, resulting in 5-day rainfall totals of 1 to 3 inches or more. Toward week’s end, a strong cold front will produce a final round of heavy rain, followed by unseasonably cool conditions, across the northern Plains and upper Midwest. Weekend minimum temperatures near 40° are possible across the northern High Plains. In advance of the late-week cold front, heat will briefly surge northward, resulting in several days of temperatures near 95° as far north as the southern Corn Belt. Elsewhere, mostly dry weather will persist across the south-central U.S., while cooler air will continue to overspread the West.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures from the Rockies to the upper Great Lakes region, while hotter-than-normal conditions will dominate New England, the Far West, and the Deep South. Meanwhile, below-normal rainfall in southern and western Texas and the Pacific Northwest will contrast with wetter-than-normal weather in most areas east of the Rockies.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

An active pattern to evolve across much of the Heartland

For the remainder of this week, unsettled, showery weather will cover the majority of the U.S. Rain will be heaviest from the northern Plains into the Mid-Atlantic States, resulting in 1- to 4-inch totals. Meanwhile, showers will become more widespread in the Four Corners States, where rainfall could reach 1 to 3 inches in a few spots. In contrast, little or no rain will fall in the south-central U.S. or the Far West. Elsewhere, hot weather will encompass much of the central and eastern U.S. during the next several days, while cool conditions will overspread the West. During the mid- to late-week period, temperatures should approach or reach 95° in the southern Corn Belt.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures from the Intermountain West into the upper Midwest, while, warmer-than-normal weather will cover much of the remainder of the country. The greatest likelihood of hot weather will be across the South. Meanwhile, near- to above-normal rainfall in most of the country will contrast with drier-than-normal conditions in the northeastern and south-central U.S.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

Near seasonal pattern across the Heartland

Heavy rain will linger Wednesday in the Northeast and into Thursday in northern New England, with an additional 1 to 3 inches of rain possible. Showers will linger for much of the week across Florida, where totals could reach 1 to 2 inches, with locally higher amounts. Farther west, mostly dry weather will persist across the southern Plains, but late-week showers will overspread the northern Plains and parts of the Midwest. Hot weather will continue on the High Plains and return—during the weekend—to the Northwest. Elsewhere, locally heavy showers in the West will yield to somewhat drier conditions, although 5-day totals could reach 1 to 2 inches or more from the Four Corners States northward to the northern Rockies.

Looking ahead, the 6- to 10-day outlook calls for near- to above-normal temperatures nationwide, except for cooler-than-normal conditions across parts of the Intermountain West. Meanwhile, near- to below-normal rainfall from the Pacific Coast to the Plains will contrast with wetter-than-normal weather from the Mississippi River to the Atlantic Seaboard.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

A wetter pattern ahead for parts of the Plains, Corn Belt

Looking ahead, a pair of slow-moving disturbances — one currently located over Louisiana and the other over southeastern Georgia — will generate showers and thunderstorms from the Delta to the central and southern Atlantic Coast States, with potentially heavy downpours possible from eastern South Carolina into the lower Delmarva. Meanwhile, a humid air mass over the Midwest will lead to scattered, mostly light showers, with more organized rain activity developing next week as a frontal system approaches. Monsoon showers are expected to persist from the central Rockies into the Four Corners region. Farther north, hot, mostly dry weather will prevail from the Northwest to the northern Plains, where daytime highs will average up to 10° above normal.

The 6- to 10-day outlook calls for cooler- and wetter-than-normal weather across most areas from the central Rockies to the Ohio Valley and Northeast. Above-normal temperatures will be confined to the Pacific Coast States as well as the Rio Grande Valley and Southeast, while drier-than-normal conditions are confined to southern-most portions of the U.S., the Pacific Northwest, and Upper Midwest.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

Weather Hazards Outlook, August 3 – 14, 2014

Here is a look at some of the potential or ongoing weather hazards and headlines ahead in the days to come:

Much above-normal temperatures for parts of the Pacific Northwest and Northern Intermountain West, Sun-Wed, Aug 3-6.

Heavy rain for the coastal areas of the mid-Atlantic and Southeast into Florida, Sun-Mon, Aug 3-4.

The possibility of flash flooding in most of the Dsert Southwest.

Severe drought for parts of the Great Plains, Southwest, Pacific Northwest, Great Basin, and California.

Weather Hazard Outlook Map

 

More sub-average temperatures for the Heartland

Locally heavy showers will continue to spread across the South. Five-day rainfall totals could reach 2 to 4 inches in the southern Atlantic States. Meanwhile, locally heavy showers will continue in the Four Corners States, with flash flooding possible. In contrast, hot, mostly dry weather will dominate the Pacific Coast States. Elsewhere, a few showers will dot the northern Plains and the Midwest, but dry weather will cover the remainder of the nation’s mid-section.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures in large sections of the central and eastern U.S., as well as the central Rockies, while hotter-than-normal conditions will cover the lower Southeast, the lower Rio Grande Valley, and the Far West. Meanwhile, near- to above-normal rainfall across the majority of the U.S. will contrast with drier-than-normal conditions in the Pacific Northwest, northern Plains, far upper Midwest, and southern parts of Arizona, Texas, and Florida.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

More cool weather ahead for the Heartland

Locally heavy showers will shift eastward from the central and southern Plains, reaching the southern Atlantic States during the weekend. Meanwhile, somewhat drier weather will prevail in the Southwest, although showers will linger across the central and southern Rockies. Most of the remainder of the West will remain mostly dry, except for scattered showers across the Great Basin and Intermountain region. Mostly dry weather will also continue through week’s end from the northern Plains into the middle Mississippi Valley. Elsewhere, an ongoing heat wave in the Northwest will contrast with near- to below-normal temperatures in most other parts of the country.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures in much of the central and eastern U.S., while hotter-than-normal conditions will cover southern Florida and the Far West. Meanwhile, near- to above-normal rainfall across the majority of the U.S. will contrast with drier-than normal conditions in parts of southern Texas and from the Pacific Northwest into the upper Midwest.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

An unusually cool pattern across the Heartland

A robust monsoon surge interacting with the tail of a cold front will result in a continuation of locally heavy showers from the Southwest and Intermountain West to the southern Plains. During the next 5 days, additional rainfall could reach 3 to 5 inches or more in the Rockies of Colorado and northeastern Mexico. Meanwhile, rainfall totals should range from 1 to 3 inches on the southern Plains and 1 to 2 inches across the Intermountain West. In contrast, hot, mostly dry weather will cover the Northwest. Farther east, several days of cooler-than-normal weather will dominate the central and eastern U.S. Heavy rain will end later Monday in the Northeast, but scattered showers will linger for several days in the Great Lakes region and across the Deep South.

Looking ahead, the 6- to 10-day outlook calls for above-normal temperatures in the Far West and across the nation’s northern tier, while cooler-than-normal conditions will prevail from the central and southern Rockies to the middle and southern Atlantic States. Meanwhile, near- to above-normal rainfall across the majority of the nation will contrast with drier-than-normal weather in portions of the central U.S., stretching from Louisiana northward into the upper Midwest.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

An unseasonably cool pattern ahead for the Heartland

A slow-moving cold front will trigger showers and thunderstorms as it tracks across the northern and central Plains into the Corn Belt, reaching the Atlantic Coast States by Monday. Rain will be heaviest in the Great Lakes region, where totals could top 2 inches in potentially severe thunderstorms. Ahead of the front, sweltering heat will briefly expand from the southern Plains into the Southeast, with highs approaching or topping 100° before the front’s arrival. Behind the cold front, sharply cooler weather will settle over most of the nation east of the Rockies by Tuesday. Meanwhile, the tail end of the front will stall across the central Rockies and southern Plains, where locally heavy downpours are possible by early next week.

Looking ahead, the 6- to 10-day outlook calls for much-below-normal temperatures from the central Rockies to the East Coast, while hotter-than-normal conditions prevail west of the Rockies. Drier-than-normal conditions are expected from the northern Pains into the Corn Belt, while above-normal rainfall develops from the Great Basin to the southern Plains and Delta.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook

A very cool pattern ahead for most of the Heartland

Cool weather in the Midwest will be reinforced early next week by a strong push of Canadian air. Heat across the High Plains will be relegated to the South, while a brief cool spell in the Northwest will be replaced by a weekend return to hot weather. During the next 5 days, 1- to 2-inch rainfall totals can be expected in parts of the northern Plains, Midwest, and Northeast, as well as the Pacific Northwest and Four Corners.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures east of the Rockies, except for hotter-than-normal conditions in the Deep South. Heat will also dominate the West. Meanwhile, below-normal rainfall in southern Texas and from the Pacific Northwest into the upper Midwest will contrast with wetter-than-normal weather across the southern Plains, Four Corners States, and from the lower Great Lakes region to the Atlantic Seaboard.

5-Day Precipitation Totals

NOAA’s 6- to 10- Day Outlook

NOAA’s 8- to 14- Day Outlook