MONITOR

Latest drought monitor over Iowa

OUTLOOKs



Monthly drought outlook


Streamflow


Map of below normal 7-day average streamflow compared to historical streamflow for the day of the year (Iowa)


PRECIP. NEEDED TO END

Amount of precipitation needed to end drought

PALMER DROUGHT INDEX

Drought severity index by division

DEPARTURES

4 month precipitation departures

STATISTICS

Week Date None Abnormally Dry Moderate Severe Extreme Exceptional DSCI
Current 2021-03-02 47.65 52.35 26.95 10.08 2.93 0.00 92
Last Week 2021-02-23 47.86 52.14 26.95 10.08 2.93 0.00 92
Three Months Ago 2020-12-01 38.07 61.93 36.35 17.59 4.03 0.00 120
Start of Calendar Year 2020-12-29 37.84 62.16 36.35 17.59 4.03 0.00 120
Start of Water Year 2020-09-29 30.57 69.43 46.89 22.57 0.00 0.00 139
One Year Ago 2020-03-03 100.00 0.00 0.00 0.00 0.00 0.00 0

DISCUSSION

The current U.S. Drought Monitor period was highlighted by a large swath of heavy rain that started in northeast Texas and progressed northeast into the Mid-Atlantic. In this area, widespread reports of 200-400% of normal precipitation took place, with some areas of Kentucky having widespread 6-8 inch amounts. Dry conditions dominated much of the West and especially the Southwest and into the Plains. Some active weather in the Pacific Northwest and northern Rocky Mountains brought with it rain and snow, helping to boost seasonal snow totals. Temperatures during the week were cooler than normal over the West with departures of 6-9 degrees below normal widespread, while temperatures were above normal from the Plains eastward with departures of 9-12 degrees above normal over much of Alabama.

Forecast

Over the next 5-7 days, it is anticipated that precipitation totals will be greatest along the West Coast from central California into the Pacific Northwest. The Plains and Midwest as well as the Rocky Mountains may see a more active pattern, with the greatest amounts of precipitation expected over the northern Plains and Upper Midwest and portions of the central Plains. Dry conditions will dominate the Mid-Atlantic and into the Tennessee River Valley while the Florida peninsula may have several opportunities for precipitation.

The 6-10 day outlooks show the greatest chances of above-normal precipitation centered on the Midwest, with much of the country showing above-normal chances of above-normal precipitation. Coastal areas of the Southeast and into the peninsula of Florida are showing the greatest chances of below-normal precipitation. There are above-normal chances of above-normal temperatures for most areas east of the Rocky Mountains, with the greatest chances in the Midwest. Above-normal chances of below-normal temperatures are expected over much of the West, with coastal areas having the greatest chances.

Midwest

Temperatures were mainly above normal through the region with the greatest departures over northern Wisconsin and the Ohio River Valley, where temperatures were 6-8 degrees above normal. With the above-normal temperatures and widespread rain from southern Illinois to southern Ohio, much of the remaining snowpack was diminished and the area quickly transitioned into spring-like conditions. It was dry over much of northern Missouri, Iowa, northern Minnesota and southern Wisconsin and from northern Illinois into Michigan. Some of these same areas are still holding on to drought and dryness from last fall and will continue to be monitored as we go into spring. Moderate drought was expanded over northern Minnesota this week. Areas of abnormally dry and moderate drought conditions were improved from central Illinois east into Indiana and Ohio.