Mainly Dry.

General Overview: ACTIVE WEATHER PATTERN ACROSS THE NATION WITH MULTIPLE SYSTEMS BRINGING RAIN AND THUNDERSTORMS TO THE EASTERN SEABOARD AND GULF COAST, WHILE MIXED PRECIPITATION AFFECTS THE NORTHERN ROCKIES AND INTERMOUNTAIN WEST. SIGNIFICANT TEMPERATURE ANOMALIES EXPECTED ACROSS THE NORTHERN PLAINS AND UPPER MIDWEST WITH WELL ABOVE NORMAL TEMPERATURES.

EAST:  A high pressure system will dominate the Northeast through the weekend, bringing generally dry conditions to much of the region. However, rain and thunderstorm activity will develop along the Southeast coast and Florida peninsula as moisture streams northward from the Gulf. The coastal areas from the Carolinas southward through Florida will experience periods of rain and thunderstorms Friday through Saturday. By Sunday, precipitation chances will decrease as the high pressure strengthens its influence across the region. No severe weather is currently anticipated, but localized heavy downpours are possible along the immediate Gulf Coast and Florida peninsula.

Temperature Anomalies:

-Days 1-3: Near normal to slightly above normal temperatures for most of the Northeast and Mid-Atlantic, with warming temperatures spreading eastward. The Southeast will experience temperatures 2-6°F above normal, particularly across inland areas.

-Days 4-6: Warming trend continues with above normal temperatures spreading across the entire Eastern region. The Northeast will see temperatures 4-8°F above normal, with the warmest anomalies focused in New England.

-Days 7-10: Temperature anomalies gradually moderate, with most areas returning to near normal or slightly above normal by days 9-10. Some slight cooling possible in parts of the Great Lakes region by day 10.

CENTRAL:  A dynamic weather pattern will affect the Central region as multiple low pressure systems and associated frontal boundaries move through the area. The Northern Plains and Upper Midwest will see the most active weather, with rain and thunderstorms developing along frontal boundaries. By Friday evening, a low pressure system will organize over the Northern Plains, bringing rain and thunderstorm activity to the Dakotas. This system will track eastward through the weekend, with precipitation spreading across the Upper Midwest. Another system develops by early next week, bringing additional precipitation chances to the region. The Central and Southern Plains will remain relatively dry through the period.

Temperature Anomalies:

-Days 1-3: Significant warmth across the Northern Plains and Upper Midwest with temperature anomalies of 8-12°F above normal, particularly in North Dakota and northern Minnesota. The remainder of the Central region will see temperatures 2-6°F above normal.

-Days 4-6: Continued above normal temperatures across the entire Central region, with the warmest anomalies (6-10°F above normal) persisting across the Upper Midwest and gradually shifting eastward.

-Days 7-10: Temperature anomalies gradually moderate, with most areas returning to near normal or slightly above normal by days 9-10. The warming trend shifts southward with the Central and Southern Plains seeing temperatures 2-4°F above normal.

WEST:  An active weather pattern will affect the Western region with multiple systems bringing precipitation to the Pacific Northwest, Northern Rockies, and Intermountain West. Mixed precipitation, including rain and snow, will affect higher elevations of Idaho, western Montana, Wyoming, and portions of Utah and Colorado. Several low pressure systems will move through the region, with the most organized precipitation occurring Friday through Sunday. The Southwest will remain largely dry, though some isolated showers may develop in Arizona. The Pacific Northwest will see periods of rain, particularly along coastal areas of Washington and Oregon.

Temperature Anomalies:

-Days 1-3: Below normal temperatures across portions of the Intermountain West and Great Basin, with anomalies of 2-6°F below normal. The remainder of the West will see near normal temperatures.

-Days 4-6: Continued below normal temperatures across the Intermountain West, with cooling spreading into the Pacific Northwest. Temperature anomalies of 2-6°F below normal will be common across these regions.

-Days 7-10: Temperature anomalies gradually moderate, with most areas returning to near normal by days 9-10. Some slight warming possible in the Southwest by the end of the period.

TROPICAL:
ATLANTIC BASIN:
1. Southwestern Atlantic: An area of low pressure may form along the remnants of a frontal boundary near southern Florida with some slow development possible as the low transitions into the gulf in the coming days. Formation chance remains low at 10% through the next 7 days. 

EAST PACIFIC BASIN:
1. Offshore Southwest Mexico: Tropical Storm Octave is currently located approximately 940 miles southwest of the Southern tip of Baja California, moving west-northwest at 7 mph. TS Octave currently has sustained winds reaching 60 mph. Octave will slowly travel northwest through this weekend. No impacts to the U.S. are currently expected with this storm system.

2. Offshore Southwest Mexico: An area of low pressure is expected to form off the coast of southwestern Mexico in a couple of days. Thereafter, environmental conditions are expected to be conducive for additional development, and a tropical depression will likely form this weekend while the system moves generally west-northwestward, parallel to but offshore of the southwestern coast of Mexico. Tropical formation chance through 48 hours is high at 70%, and tropical formation chance through 7 days is high at 90%. No immediate concerns to land are anticipated, although DTN will monitor the latest forecast for any changes.