Sunday, May 24, 2020

Periods of Showers & T-Storms to Bring Locally Heavy Rainfall Threat This Week



Synopsis/Key Points:
  • Isolated to widely spaced showers and isolated thunderstorms are possible at times during the day today and into this evening
  • Periods of showers and thunderstorms are likely from around or shortly after Midnight tonight through about 8am on Monday, with locally heavy rainfall possible at times during the period
  • Scattered showers and thunderstorms are possible during the daytime and evening hours on Monday
  • Periods of showers and thunderstorms are likely from around 2-3am Tuesday through about 9am Tuesday, with locally heavy rainfall possible at times during the period
  • Widespread rainfall of 1-2 inches is likely with localized amounts of 2-3 inches possible in some parts of the area, which may lead to at least minor flooding of low lying and poor drainage areas at times during the period
Details by Time Period:

...Today and This Evening...
Isolated to widely spaced showers and isolated thunderstorms are possible at times during the day today and into this evening. Coverage of the activity will likely average 30 percent at any given time, possibly reaching 40 percent during peak afternoon heating. Generally brief but locally heavy downpours of rain and lightning are likely with any isolated thunderstorms.

...Midnight Tonight to 8am Monday Morning...
Periods of showers and thunderstorms are likely from around or shortly after Midnight tonight through about 8am on Monday. Locally heavy rainfall can be expected at times during the period, and cloud to ground lightning can be expected with any thunderstorms. Minor flooding of some of the typically more vulnerable low water crossings and similar flood prone areas is possible in at least some parts of the area, particularly near/adjacent to areas where downpours are more persistent.

...Daytime and Evening Hours on Monday...
Scattered showers and thunderstorms are possible during the daytime and evening hours on Monday. Coverage will likely average 40 percent throughout most of the period. Generally brief but locally heavy downpours of rain and lightning are likely with any thunderstorms.

...2am Tuesday through 9am Tuesday...
Periods of showers and thunderstorms are likely from around 2-3am Tuesday through about 9am Tuesday. Locally heavy rainfall can be expected at times during the period, and cloud to ground lightning can be expected with any thunderstorms. Mostly minor flooding of low water crossings and similar flood prone areas is possible in at least some parts of the area. This will be of greatest concern in areas that also receive heavy rainfall on Sunday night/Monday morning.

...9am Tuesday to 6pm Tuesday...
Scattered showers and thunderstorms are possible during the daytime and evening hours on Monday. Coverage will likely average 40 percent throughout most of the period. Generally brief but locally heavy downpours of rain and lightning are likely with any thunderstorms.

Total Rainfall for the Period:


Widespread rainfall of 1-2 inches is likely with localized amounts of 2-3 inches possible in some parts of the area.

Remainder of the Week:


Please be aware that periods of scattered shower and thunderstorm activity are expected again on Wednesday and especially on Thursday and Friday of this week. Depending upon how much rainfall is received beforehand, any additional heavy rainfall during the middle and latter portions of the week could further aggravate the low land flooding potential across the area, and this will need to continue to be monitored closely.

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