The forecast through December indicates many areas of water surplus including Iowa and surrounding states, the Ohio River Basin, eastern Pennsylvania, and Texas. Surpluses will be intense in Iowa and Pennsylvania. Deficits are expected in the Southeast, primarily moderate but more intense in Florida surrounding Lake Okeechobee. Intense deficits are also forecast along the Arkansas River, and in Colorado, and north-central Utah. Other areas of deficits include the Canadian River, the Rio Grande through New Mexico, and Maine.
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The forecast through November indicates that water deficits will downgrade considerably overall leaving mild to moderate deficits, but deficits will be intense along the Arkansas River through Kansas and Colorado, western Colorado, northeastern Utah, along the Canadian River through Oklahoma and the Texas Panhandle, and in the US Northeast. Areas of surplus include: Montana, the Black Hills of South Dakota, northern Nebraska, Iowa, Wisconsin, and eastern Pennsylvania.
For the next several months, water deficits will diminish overall but intense deficits are forecast for southern California, the Willamette Valley in Oregon, along the Arkansas River, and western Colorado. Areas of moderate deficit include northern Minnesota and from Missouri to the Gulf. Surpluses are forecast for northern Nebraska, the Black Hills of South Dakota, southern Montana, the Pecos River in New Mexico into Texas, eastern Pennsylvania, Maryland, northern Virginia, coastal North Carolina, and much of Florida from Jacksonville past Lake Kissimmee.
The forecast through September indicates that, while exceptional water deficits will diminish overall and in the Southwest and Southern Rockies in particular, moderate to severe deficits are expected in a wide path from Missouri to the Gulf. Deficits may be intense in Louisiana, along the Arkansas and Canadian Rivers, and the Pacific Northwest coast. In the Northeast, deficits will persist and spread further in Maine. Significant surpluses will persist in the Northern Rockies, and surpluses will emerge in much of Florida.
The forecast through August indicates deficits in the Northeast, which could be exceptional in southern Maine. Moderate to severe surpluses are forecast scattered from Virginia through Alabama, and covering nearly all of Florida. Primarily moderate deficits are forecast for the Mississippi River Basin. Intense deficits are forecast for western Colorado, northern Utah, western Oregon, western Washington, and southernmost Texas. Primarily moderate deficits are expected in California. Surpluses will diminish in Idaho and downgrade slightly from exceptional in Montana.
Intense water surpluses in the Ohio River Valley and the Lower Mississippi Basin will retreat considerably. Surpluses in western Montana and northern Idaho will remain intense. Exceptional deficits will persist in Utah and increase in southwest Colorado, but deficits in surrounding states will moderate. On the East Coast deficits will retreat, except in South Carolina and Georgia. Southern Florida will transition from deficit to surplus. Moderate deficits are forecast for Nebraska, eastern North Dakota, Minnesota, and northern Wisconsin.
The forecast through June indicates that deficits will diminish and downgrade in the South Atlantic States, retreat considerably in the Gulf States, downgrade to moderate in the Southern Plains States, persist with intensity in the Southwest, and shrink in central California. Surpluses are forecast for Idaho, Montana, western Wyoming, Nebraska, South Dakota, Iowa, Missouri, and along the Missouri and Yellowstone Rivers. Surpluses will be exceptional in Idaho and Montana. Surpluses in the Ohio River Valley will diminish. After June, anomalies will downgrade, but persist.
Water surpluses will continue to emerge in southern Michigan and the Ohio River Valley. Exceptional surplus is expected on the Missouri River, western Montana, Idaho, and Washington. Intense deficits will continue in the West and Southwest. Moderate deficits are forecast for Oregon, Kansas, western Oklahoma, and most of Texas west of the Brazos River, with severe conditions in the Panhandle. Missouri, Arkansas, Louisiana, and Mississippi will transition out of deficit, with moderate surplus emerging in Arkansas into surrounding states. Deficits in the Mid-Atlantic States will shrink.
The forecast for the next few months indicates relief from exceptional water deficits observed during the prior three months in the West and the Lower Mississippi states. However, widespread deficits remain in the forecast from California to the Mississippi, and from the Gulf of Mexico northward along the Eastern Seaboard through Massachusetts. Deficits will be especially intense in New Mexico, Missouri, and Virginia. Surpluses are forecast for Washington, Idaho, western Montana, and along the Missouri and Yellowstone Rivers. The widespread distribution of deficits is expected to persist through July or longer.
Water deficits in the Southwest and Southern California will moderate overall in the near-term. Intense deficits will spread in Missouri, persist in northern Louisiana and central Mississippi into central Alabama, and emerge in North Carolina, Virginia, Maryland, and Delaware. Surpluses are forecast for Idaho, western Montana, southern Wyoming, central Nebraska, Minnesota into Wisconsin, and Michigan. After March, primarily moderate deficits will continue to emerge from California to North Carolina, and surpluses are forecast for Idaho, western Montana, northwestern Wyoming, and along the Columbia, Missouri, and Yellowstone Rivers.