Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
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588 ACUS01 KWNS 210042 SWODY1 SPC AC 210040 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Thu Jun 20 2024 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN NEW ENGLAND AND THE CENTRAL HIGH PLAINS... ...SUMMARY... Scattered damaging gusts are expected this evening across southern New England. Scattered severe storms are also expected over parts of the north-central High Plains. ...01z Update... A southward-propagating MCS has evolved over southern New England, along the southern fringe of stronger westerlies. This activity developed well ahead of the main cold front, along a prefrontal low-level confluence zone, and is advancing steadily south across MA at this time. Surface temperatures remain quite warm across this region with readings holding in the 80s to near 90F. It appears adequate buoyancy is holding across interior southern New England such that this complex should move of the coast with an attendant risk for locally damaging winds. Weak mid-level disturbance is shifting east across the central High Plains this evening. A substantial complex of storms has evolved ahead of this feature, extending from northeast CO-NE Panhandle-south-central SD. While this activity has produced very large hail earlier in its convective cycle, a bowing squall line has emerged over Cherry County NE, and this portion of the MCS may generate severe winds as it surges east within a focused warm-advection zone. LLJ will increase markedly across the central Plains over the next few hours, supporting forward propagation toward southeast SD late this evening. ..Darrow.. 06/21/2024 $$