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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 0815Z Jun 18, 2018)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 415 AM EDT Mon Jun 18 2018 Valid 12Z Mon Jun 18 2018 - 12Z Wed Jun 20 2018 ...Heavy rain and strong thunderstorms continue for the Plains to the Northeast along and north of a front... ...Heavy rain and flash flooding expected for the Texas coast... ...Dangerous heat continues for the Midwest and Ohio Valley and spreads eastward into the Northeast... A cold front is forecast to make its way into the Northeast U.S. on Monday and Monday night, and continue into the northern Mid-Atlantic on Tuesday. Along and ahead of this front, thunderstorms are expected for the Northeast, and there are slight risks of both severe weather and flash flooding for that region on Monday and Monday night. As the front progresses southward, storms will spread into the Mid-Atlantic on Tuesday. Farther west, the front is stalled, and thus will continue to linger across the Ohio Valley, Middle Mississippi Valley, and Central Plains. Multiple rounds of rain and thunderstorms are expected for these areas along and north of the front. A moderate risk of excessive rainfall/flash flooding is in effect for the Central Plains on Tuesday as a low pressure system along the front begins to strengthen. Storms elsewhere in those regions could also contain flash flooding and be strong to severe on Monday and Tuesday. Even farther west, the Northern Rockies and Northern High Plains are expecting rain and thunderstorms on Monday and Tuesday with an upper-level low in the area. This rain of an inch or two could lead to flooding there, and cooler than average temperatures are forecast. A trough of low pressure is forecast to linger near the Texas coast over the next couple of days, and this combined with high levels of moisture in the atmosphere will lead several inches of rain there. This rain could be beneficial for areas in drought, but flash flooding is possible in locations where thunderstorms produce a high rainfall rates or train over one area. South of the front, hot temperatures and high humidity will lead to heat indices over 100 degrees in portions of the Middle Mississippi Valley and Ohio Valley, as well as into the Mid-Atlantic on Monday. Heat Advisories are widespread throughout those areas, with Excessive Heat Warnings remaining through Monday for the cities of St. Louis and Chicago. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php