Storm Prediction Center Mesoscale Discussion 1421
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Mesoscale Discussion 1421 | |
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Mesoscale Discussion 1421 NWS Storm Prediction Center Norman OK 0445 PM CDT Mon Jun 23 2025 Areas affected...Northwest Oklahoma into central Kansas Concerning...Severe potential...Watch possible Valid 232145Z - 232345Z Probability of Watch Issuance...40 percent SUMMARY...Scattered thunderstorms will continue to pose an isolated severe wind and hail risk through the early evening hours. This threat should generally remain sufficiently localized to preclude watch issuance, but a watch is possible if a more focus corridor of severe thunderstorms becomes apparent. DISCUSSION...Over the past two hours, scattered convection has developed along and ahead of a weak cold front from northeast KS into far northeast NM. Despite a very buoyant air mass ahead of the front (characterized by MLCAPE values upwards of 2000-3000 J/kg), stronger flow aloft remains largely displaced to the northwest behind the front. This is limiting deep-layer wind shear to around 20-25 knots for much of the region, which should favor a mix of loosely organized cells/clusters with occasionally robust updrafts and/or outflow. Recent convective trends bear this out with only sporadic reports of large hail and severe gusts emanating from mostly transient convection. While isolated instances of severe hail and/or severe winds will remain possible across a broad region, the meager deep-layer shear and scattered nature of the convection limits confidence in a more widespread severe threat. Nonetheless, this environment could support a somewhat more organized cluster or two with a more focused severe wind threat if sufficient cold pool amalgamation can occur. While this does not appear imminent, convective trends will continue to be monitored and watch issuance is possible if this scenario begins to emerge. ..Moore/Smith.. 06/23/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TOP...ICT...OUN...GID...DDC...AMA... LAT...LON 37579666 36789823 36269956 36150054 36200125 36730177 37280167 37680115 37810107 39239923 39769832 39939784 39949730 39819679 39639636 39289604 38919579 38519572 38019598 37579666 MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN |
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2025-06-23 21:47:04