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| Mesoscale Discussion 1894 | |
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Mesoscale Discussion 1894
NWS Storm Prediction Center Norman OK
0448 PM CDT Tue Aug 13 2024
Areas affected...Eastern Idaho...Western Wyoming...Northern Utah
Concerning...Severe potential...Watch unlikely
Valid 132148Z - 140015Z
Probability of Watch Issuance...5 percent
SUMMARY...An isolated severe threat will likely continue for a few
more hours. Hail and gusty winds will be the primary threats. The
severe threats should remain too marginal for weather watch issuance
is not expected.
DISCUSSION...The latest water-vapor imagery and 500 mb RAP analysis
suggest that a shortwave trough is moving through the northern
Rockies. Lift associated with this feature, is supporting scattered
thunderstorm development near a pocket of moderate instability from
northern Utah into eastern Idaho. MLCAPE within this area is
estimated by the RAP to be in the 1000 to 1500 J/kg range. Mid-level
lapse rates are also steep. In addition, the latest WSR-88D at
Pocatello, Idaho has 0-6 km shear around 35 knots, with speed shear
mostly in the mid-levels. This should be enough for locally strong
to severe convection. A rotating storm or two will be possible with
hail and gusty winds as the primary threats. The marginal severe
threat may persist into the early evening.
..Broyles/Edwards.. 08/13/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...RIW...TFX...SLC...PIH...
LAT...LON 42501262 41431293 40251316 39681288 39571231 39841140
40571059 42001000 43070973 44060967 44440987 44701038
44731090 44581150 44221193 43661227 42871252 42501262
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