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Mesoscale Discussion 751 | |
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Mesoscale Discussion 0751 NWS Storm Prediction Center Norman OK 0925 PM CDT Thu May 08 2025 Areas affected...Central SC into eastern NC Concerning...Severe potential...Watch unlikely Valid 090225Z - 090330Z Probability of Watch Issuance...20 percent SUMMARY...Thunderstorms may increase in coverage late this evening across parts of SC/NC. A watch is not currently anticipated, but trends are being monitored. DISCUSSION...A relatively slow-moving but mature MCS is tracking eastward across central NC. The outflow boundary associated with this convection has proceeded out ahead of the updrafts, suggesting a slow weakening will occur. Nevertheless, mesoscale organization may continue to result in gusty winds along the line for another 1-2 hours. The surface outflow boundary extends southwestward into northern SC. Southeasterly low-level winds to the south of the boundary will maintain a moist and unstable air mass in this region, where relatively steep mid-level lapse rates are present. Most CAM guidance suggests that thunderstorms will increase in coverage along the outflow boundary during the next couple of hours. Given the unstable conditions and favorable deep-layer shear profiles, there will remain some severe threat through the early morning period. However, it is unclear whether this threat will warrant a new severe thunderstorm watch, given continued diurnal cooling. Trends will be monitored. ..Hart/Smith.. 05/09/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MHX...RAH...ILM...CAE...GSP...FFC... LAT...LON 34498216 34808034 35277945 35937901 35807826 34987804 34047857 33567952 33448110 33558263 34268320 34498216 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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