National Weather Summary for Thursday, May 25, 2017

A cold front will be the focus for the development of thunderstorms across portions of the High Plains on Thursday. A few storms may develop across the Mid Atlantic Thursday as an upper level low lingers over the region.

  • Strong to Severe Thunderstorms Possible for the High Plains on Thursday
  • Thunderstorm Potential Thursday for the Mid Atlantic
  • Thunderstorms for Portions of Florida on Thursday
  • Risk for Thunderstorms across the Central Plains Friday
  • Thunderstorms Friday across the Upper Midwest
  • Severe Thunderstorms Expected from Eastern Oklahoma into the Missouri Valley on Saturday
  • Strong to Severe Thunderstorms from Southern Plains to Mid Atlantic on Saturday
  • Excessive Rainfall Potential Saturday from Oklahoma into Ohio Valley
US Hazards

Strong to Severe Thunderstorms Possible for the High Plains on Thursday
An area of low pressure over the Central Rockies will promote the development of thunderstorms Thursday across the High Plains. Large hail and damaging winds will be the primary hazards initiallychanging to only damaging winds in the evening as thunderstorms congeal into a line.

Major Cities in Region: Denver, CO, Cheyenne, WY, Goodland, KS, North Platte, NE, Kearney, NE, Salina, KS

Region 1

Thunderstorm Potential Thursday for the Mid Atlantic
As an area of low pressure lifts into the Northeast, a few thunderstorms that develop during the morning and early afternoon across Region 2 will have the potential for large hail, damaging winds, and tornadoes. The strongest wind shear will be across the Delmarva Peninsula where a few thunderstorms could become severe. Activity should weaken and lift out of the region during the late afternoon and into the evening.

Update 12:54pm EDT: Severe thunderstorms capable of large hail northwest of Durham, NC.

Radar 12:54pm EDT

Update 2:19pm EDT: Severe thunderstorm capable of small hail and damaging winds NW of Myrtle Beach, SC.

Radar 2:19pm EDT

Major Cities in Region: Raleigh, NC, Norfolk, VA, Washington, DC, Philadelphia, PA

Region 2

Thunderstorms for Portions of Florida on Thursday
A moist environment supportive of isolated rotating storms with damaging winds or a brief tornado/waterspout will be possible this morning into the early afternoon across southern Florida. Into the afternoon, however, the environment should begin to stabilize, causing any thunderstorms to weaken.

Major Cities in Region: Fort Myers, FL, Palm Beach, FL, Miami, FL

Region 3

Risk for Thunderstorms across the Central Plains Friday
The threat for showers and thunderstorms across the High Plains will continue on Friday as an area of low pressure remains nearly stationary over the Central Rockies. Thunderstorms will likely develop during the afternoon and evening initially over the higher terrain, before spreading into Kansas and Nebraska after dark. Hail and damaging winds will be the primary hazards.

Major Cities in Region: Goodland, KS, North Platte, NE

SPC Convective Outlook for Friday

Thunderstorms Friday across the Upper Midwest
A weak front moving through the Upper Midwest will be the focus for thunderstorms as instability builds through the afternoon. Hail and damaging winds will be the primary hazards, but the threat should diminish after dark.

Major Cities in Region: Minneapolis, MN, Duluth, MN

SPC Convective Outlook for Friday

Severe Thunderstorms Expected from Eastern Oklahoma into the Missouri Valley on Saturday
By the weekend, a more substantial severe weather threat is forecast from the Southern Plains into the Missouri Valley. Moderate to extreme instability is forecast as moisture moves northward. Timing and placement of an upper level low appears to have pushed the threat eastward. Storms will likely develop across Northern Missouri first before expanding southward through the evening hours. Storms will quickly become severe with strong winds and large hail the primary hazards, but a few tornadoes cannot be ruled out. Activity is forecast to spread south and east into Illinois and portions of southeast Kansas after dark with the threat transitioning into more of a damaging wind threat. A more conditional threat will exist across portions of Oklahoma. If storms develop, possibly by or just after dark, they will quickly become severe with a threat for very large hail, damaging winds, and tornadoes. Storms would then expand or move eastward into parts of Arkansas after dark with a continued threat for severe impacts.

Major Cities in Region: Tulsa, OK, Springfield, MO, Little Rock, AR, St. Louis, MO

SPC Convective Outlook for Saturday

Strong to Severe Thunderstorms from Southern Plains to Mid Atlantic on Saturday
The weather pattern on Saturday will consist of a surface low over Oklahoma. Extending to the south will be a dryline, which should extend southward to the Rio Grande. Extending eastward from the surface low is a stationary front draped over the Midwest. Showers and thunderstorms will be possible across the region. The primary hazards with any thunderstorms that develop will be large hail and damaging winds, but an isolated tornado or two cannot be ruled out.

Major Cities in Region: Goodland, KS, Dodge City, KS, Oklahoma City, OK, Dallas, TX, Tulsa, OK, Kansas City, MO, Little Rock, AR, St. Louis, MO, Memphis, TN, Indianapolis, IN, Charleston, WV, Richmond, VA

SPC Convective Outlook for Saturday

Excessive Rainfall Potential Saturday from Oklahoma into Ohio Valley
Moisture will be plentiful along a stationary front draped from Eastern Oklahoma into the Central Appalachians on Saturday. Numerous showers and thunderstorms will be possible along the boundary with rainfall amounts of 1–2 inches with locally higher amounts across the region. Due to recent rainfall, there will be the potential for flooding and local runoff.

Major Cities in Region: Tulsa, OK, Little Rock, AR, Memphis, TN, Nashville, TN, Charleston, WV

Excessive Rainfall Risk Outline for Saturday

A Look Ahead
A cold front will continue to progress southeastward on Sunday. This front will provide a focus for the development of thunderstorms from the Southern Plains into the Ohio Valley. By Monday, the risk for thunderstorms will shift eastward from the Lower Mississippi Valley into the Mid Atlantic.

This is just a brief look at current weather hazards. We can provide you site-specific weather forecast information for the purpose of protecting your personnel and assets and to assess your weather risk. Try a 7-day demo right away and learn how timely precision weather information can enhance your bottom line.


Originally published at blog.wdtinc.com.

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