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July 28, 2011

90s continue, dry conditions spread in Md.

Forecasters are giving us a 20 to 30 percent chance of seeing some showers sometime on Thursday, Friday or Saturday afternoon. The cloud cover that comes with these little disturbances will keep afternoon temperatures from reaching the triple-digit heights that had been forecast for downtown Baltimore on Friday.

But it will remain hot, and increasingly humid. The forecast high for Friday at BWI-Marshall Airport is now 98 degrees, with Heat Index values reaching 104 degrees. Downtown Baltimore could reach 99 degrees Friday afternoon, with humidity pushing the Heat Index to 106 degrees.

And the 90-degree weather is forecast to continue at least through next Wednesday. On Saturday, the streak will reach 14 days. That will tie the mark for the third-longest stretch of 90-plus weather in Baltimore. If we go another week, to next Saturday, the count will stand at 21 days, equal to the second-longest streak of 90-degree weather on record here, set in 1988.

The streak would have to continue until Aug. 10 to match the all-time record for consecutive 90-degree days, 25, in 1995.

In the meantime, dry conditions have spread across Maryland in the past week. The USDA Drought Monitor map released this morning shows all of Maryland except the western two-thirds of Garrett County - almost 94 percent of the state - rated as at least "abnormally dry." That's up from 86 percent last week.

Severe drought remains limited to Wicomico and slices of Worcester and northern Somerset counties on the Lower Eastern Shore - just 5 percent of the state, and unchanged from last week. But "moderate" drought conditions remain south of Easton on the Eastern Shore, and in the southern portions of Calvert and St. Mary's counties, roughly 18 percent of the state.

Posted by Frank Roylance at 10:03 AM | | Comments (1)
Categories: Drought, Forecasts
        

Comments

Do these drought numbers include the rain we've gotten here in upper Balto Co. over the last week? Especially with the storm on Monday, we've had quite a bit of rain recently. I'm hard-pressed to believe it hasn't made a sizable dent in the deficit.

FR REPLIES: The Drought Monitor map is based on numbers valid for 7 a.m. on Tuesday. But it's not based on rainfall alone. It's an index that also includes streamflow, groundwater, soil moisture and plant health.

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About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff
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