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73.6°F |
| Current conditions from King Hill Updated every 5 minutes |
| Monday July 20, 2026 | |||||||
SPC - No watches are valid as of Mon Jul 20 13:40:02 UTC 2026No watches are valid as of Mon Jul 20 13:40:02 UTC 2026. SPC MD 1671MD 1671 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR WESTERN UPPER PENINSULA OF MICHIGAN AND ADJACENT WISCONSIN
Mesoscale Discussion 1671
NWS Storm Prediction Center Norman OK
0837 AM CDT Mon Jul 20 2026
Areas affected...Western Upper Peninsula of Michigan and adjacent
Wisconsin
Concerning...Severe potential...Watch unlikely
Valid 201337Z - 201530Z
Probability of Watch Issuance...20 percent
SUMMARY...Isolated damaging winds and marginally severe hail are
possible this morning. A gradual weakening trend is anticipated and
a watch is not expected. Trends will continue to be monitored.
DISCUSSION...A small elevated linear segment has moved into the
western Upper Peninsula of Michigan. The observed soundings from INL
and APX this morning show around 7 C/km mid-level lapse rates. This
activity is currently being driven by moderate low-level warm
advection. With time, however, the low-level jet will weaken and
veer. Elevated buoyancy will be able to sustain robust convection
for another hour or two as it moves southeastward at around 35 kt.
The overall expectation is for this linear segment to outpace
favorable buoyancy before low-level moistening increases later
today. Isolated damaging winds will be the main threat this morning,
though steep mid-level lapse rates could support marginally severe
hail as well.
..Wendt/Thompson.. 07/20/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MQT...GRB...
LAT...LON 46548988 47188889 46428704 45818661 45508680 45478777
46548988
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
Read more
SPC MD 1670MD 1670 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR FAR SOUTHEAST MINNESOTA...EASTERN IOWA
Mesoscale Discussion 1670
NWS Storm Prediction Center Norman OK
0755 AM CDT Mon Jul 20 2026
Areas affected...Far Southeast Minnesota...Eastern Iowa
Concerning...Severe potential...Watch unlikely
Valid 201255Z - 201500Z
Probability of Watch Issuance...20 percent
SUMMARY...An isolated wind-damage threat will likely continue with a
short line of strong to severe storms near the Iowa-Minnesota state
line. This line will move south-southeastward across eastern Iowa
over the next couple of hours. The threat is expected to be marginal
and weather watch issuance appears unlikely.
DISCUSSION...The latest surface analysis shows a north-to-south
corridor of low-level moisture from far western Missouri northward
into western Iowa, along which dewpoints are in the mid 70s F.
Slightly further east, the RAP has an axis of moderate instability
with MLCAPE in the 1000 to 2000 J/kg range analyzed over central
Iowa. Scattered thunderstorms are ongoing along the instability
gradient to the east of this axis. The storms are being supported by
a subtle mid-level shortwave trough evident on water vapor imagery
moving southeastward across the upper Mississippi Valley. Although
forecast soundings across eastern Iowa this morning have a
near-surface inversion in place, effective shear is estimated to be
near 40 knots. This could support an isolated and marginal threat
for severe wind gusts over the next couple of hours, especially as
surface temperatures ahead of the storms begin to increase.
..Broyles/Smith.. 07/20/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DVN...ARX...MPX...DMX...
LAT...LON 43549372 43049385 41999340 41419293 41159252 41039199
41089155 41329112 41759080 42189082 42839106 43439143
43809184 43999228 43979296 43799344 43549372
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
Read more
SPC Jul 20, 2026 1300 UTC Day 1 Convective OutlookSPC 1300Z Day 1 Outlook
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