WeatherWheeler35 Posted May 14 Share Posted May 14 SPC AC 141958 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0258 PM CDT Sun May 14 2023 Valid 142000Z - 151200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE MID MISSISSIPPI VALLEY... ...SUMMARY... Thunderstorms capable of producing damaging wind gusts and hail are possible later this afternoon into this evening across parts of the mid Mississippi Valley. ...20Z Update... The Marginal Risk area has been trimmed from the south and expanded slightly eastward, based on the progression of an arc of convection associated with a compact cyclone moving across east TX. Otherwise, no changes have been made to the severe probabilities. Scattered strong to potentially severe thunderstorms remain possible across parts of the mid MS Valley into this evening, with a threat of locally damaging wind gusts and isolated hail. A more isolated severe threat remains evident across northeast TX, and from eastern KS into western MO. See MCD 792, MCD 793, MCD 794, and the previous outlook discussion below for more information. ..Dean.. 05/14/2023 .PREV DISCUSSION... /ISSUED 1130 AM CDT Sun May 14 2023/ ...Mid-Mississippi Valley including Missouri/Illinois... Thunderstorms are expected to develop/increase this afternoon initially across northern/eastern Missouri near a weak surface low and a southeastward-extending front, with additional/more isolated warm sector development across eastern Kansas and central/southern Missouri. Over time, storms should build southeastward along the low-level theta-e/CAPE axis into southern Illinois. Winds aloft are only modestly strong. Nevertheless, the combination of a moist and moderately unstable airmass and linear forcing mechanisms along the front may be sufficient for a few bowing structures posing a risk of locally damaging winds and hail. ...East Texas... Within a moist environment, a belt of moderately strong low/mid-level southerly winds will tend to persist and shift north-northeastward today on the eastern periphery of a weak low. Weak mid-level lapse rates along with cloud cover and existing precipitation will tend to limit overall destabilization, but a few stronger storms capable of water-loaded downbursts could materialize this afternoon across eastern Texas. CLICK TO GET WUUS01 PTSDY1 PRODUCT NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z Quote Link to comment Share on other sites More sharing options...
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