SmokeEater
Member
And another meso for Cape Girardeau, mentions monitoring for increasing strong to intense tornado potential.
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Severe Weather Threat 4/27-4/28
- Thread starter Bulkshear
- Start date
Kds86z
Member
slenker
Member
I think it’s going to be very active when it hits 5-6 PM over there.
Ledian
Member
Between the special weather statement and the newest MCD, definitely keeping an eye on the cluster in southern Illinois now, as well as anything forming behind it.
Kds86z
Member
ONCERNING...TORNADO WATCH 162...
VALID 272058Z - 272230Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 162 CONTINUES.
SUMMARY...MONITORING FOR SUPERCELL DEVELOPMENT AND THE POTENTIAL FOR
STRONG-INTENSE TORNADOES OVER THE NEXT COUPLE HOURS.
DISCUSSION...CONVECTION IS GRADUALLY INCREASING ACROSS FAR SOUTHERN
IL AND VICINITY, WHERE BOUNDARY-LAYER DEWPOINTS HAVE INCREASED TO
NEAR 70F -- RESULTING IN A STRONGLY UNSTABLE AIR MASS. ADDITIONALLY,
THE PAH VWP AND RECENT MESOANALYSIS DATA INDICATE A LARGE
CLOCKWISE-CURVED HODOGRAPH, WITH EFFECTIVE SRH INCREASING TO AROUND
300 M2/S2. THE STRONG BUOYANCY, ENHANCED LOW-LEVEL STREAMWISE
VORTICITY, AND EXPECTED DISCRETE STORM MODE WILL FAVOR AN INCREASING
RISK OF SUPERCELLS CAPABLE OF PRODUCING STRONG-INTENSE TORNADOES AND
VERY LARGE HAIL/DAMAGING WINDS OVER THE NEXT COUPLE HOURS.
..WEINMAN.. 04/27/2026
VALID 272058Z - 272230Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 162 CONTINUES.
SUMMARY...MONITORING FOR SUPERCELL DEVELOPMENT AND THE POTENTIAL FOR
STRONG-INTENSE TORNADOES OVER THE NEXT COUPLE HOURS.
DISCUSSION...CONVECTION IS GRADUALLY INCREASING ACROSS FAR SOUTHERN
IL AND VICINITY, WHERE BOUNDARY-LAYER DEWPOINTS HAVE INCREASED TO
NEAR 70F -- RESULTING IN A STRONGLY UNSTABLE AIR MASS. ADDITIONALLY,
THE PAH VWP AND RECENT MESOANALYSIS DATA INDICATE A LARGE
CLOCKWISE-CURVED HODOGRAPH, WITH EFFECTIVE SRH INCREASING TO AROUND
300 M2/S2. THE STRONG BUOYANCY, ENHANCED LOW-LEVEL STREAMWISE
VORTICITY, AND EXPECTED DISCRETE STORM MODE WILL FAVOR AN INCREASING
RISK OF SUPERCELLS CAPABLE OF PRODUCING STRONG-INTENSE TORNADOES AND
VERY LARGE HAIL/DAMAGING WINDS OVER THE NEXT COUPLE HOURS.
..WEINMAN.. 04/27/2026
akt1985
Member
Any changes to the MCS that will roll through north Alabama later tonight?
That area is recovering quickly. I wonder if the storms, when they get to that area, will have grown upscale already.
(More speaking about the activity in MO)
Tornado watch for north Mississippi should be coming very soon.
Let's hope the 20z hrrr is not correct or it will be a rough 5-6 hours or so there and Arkansas.
Let's hope the 20z hrrr is not correct or it will be a rough 5-6 hours or so there and Arkansas.
Grand Poo Bah
Member
0-1km SRH is absolutely bonkers in Illinois and eastern Missouri
TornadoFan
Member
The hodographs look insane.
lake.effect
Member
A bit off topic, but I just noticed a strange feature on the Springfield, MO radar.
Check out the center-right - there's a distinct linear shape moving east to west (the opposite direction of the weather)
It's persisted for 3 scans on both reflectivity and radar, and it's moving. No flights in the area.
Any guesses?
Check out the center-right - there's a distinct linear shape moving east to west (the opposite direction of the weather)
It's persisted for 3 scans on both reflectivity and radar, and it's moving. No flights in the area.
Any guesses?
VultureDirge89
Member
New tornado warning was just issued a couple minutes ago. Laddonia needs to be taking shelter right about now and Bowling Green should be prepared too.
Is anybody able to post the 20z hrrr simulated radar, just for posterity sake if it actually verifies.
TornadoFan
Member
The Springfield storm looks like it's taking on more of a supercelluar shape.
SmokeEater
Member
Feel bad for anyone on I-44 driving west from Springfield, showing 4 inch hail now.
zath
Member
It's likely just an artifact of the radar bouncing off of a structure in Springfield, MO and then reflecting back and the radar interprets its as precipitation based on where it "thinks" the reflection came from. The KSGF radar has a relatively low beam angle (~0.176 degree) and with the radar west of the city, there is a decent chance of it hitting buildings or structures in the city.
edit: Here is a document that talks about different types of artifacts that can show up on radar.
Last edited:
The
The 20z it's not fully finished but it's gnarly to what's currently at right now.Assuming you meant the 19Z, since 20Z isn't all the way in yet.
Kds86z
Member
Riley on convective trends - a lot less convection is happening then forecasted. Gonna be ugly...