Alert archive / Kansas / Mesoscale Discussions in 2012
Mesoscale Discussion 375
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2012, 5:30 PM CDT for 41 counties in Kansas; 7 counties in Missouri; 5 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2012, 5:30 PM CDT (22:30 UTC)
- Expired
- Mar 28, 2012, 7:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 53 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Chase County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Crawford County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marshall County, KS, Miami County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Bates County, MO, Buchanan County, MO, Cass County, MO, Clay County, MO, Jackson County, MO, Platte County, MO, Vernon County, MO, Franklin County, NE, Jefferson County, NE, Nuckolls County, NE, Thayer County, NE, Webster County, NE
The radar
The Topeka radar (KTWX), 14 km from the middle of the area, began a volume at 22:33 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.5 hours before the alert went out and 57 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 619 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
990
ACUS11 KWNS 282231
SWOMCD
SPC MCD 282230
MOZ000-KSZ000-NEZ000-290030-
MESOSCALE DISCUSSION 0375
NWS STORM PREDICTION CENTER NORMAN OK
0530 PM CDT WED MAR 28 2012
AREAS AFFECTED...FAR SRN NEB...MUCH OF NERN KS...NWRN MO
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 282230Z - 290030Z
AN INCREASE IN CONVECTIVE COVERAGE AND INTENSITY IS EXPECTED OVER
THE NEXT FEW HOURS WITH A LARGE HAIL THREAT. DAMAGING WINDS MAY ALSO
BECOME POSSIBLE AND A WATCH MAY BE REQUIRED.
STORMS ARE BEGINNING TO FORM AND INCREASE IN COVERAGE ACROSS E CNTRL
KS WHERE STRONG HEATING AND DEWPOINTS IN THE LOWER 60S F HAVE
CONTRIBUTED TO 2000-3000 J/KG MUCAPE. CONVERGENCE ALONG A BROAD WARM
FRONT AND STEADY ISENTROPIC LIFT ASSOCIATED WITH 20 KT SWLY 850 MB
FLOW SHOULD ALLOW MORE STORMS TO FORM THIS EVENING. FORECAST
SOUNDINGS AND OBJECTIVE ANALYSIS INDICATE THAT CONVECTIVE INHIBITION
WILL REMAIN MINIMAL AND LIFT FROM WARM ADVECTION MAY INCREASE OVER
NERN KS AND NWRN MO.
SHEAR PROFILES ARE NOT STRONG BUT SUFFICIENT FOR SUPERCELLS GIVEN
LOW LEVEL VEERING AND FAVORABLE THERMODYNAMICS IN PLACE. RATHER SLOW
MOVING SUPERCELLS WILL BE POSSIBLE PRODUCING LARGE HAIL...AND A
DAMAGING WIND THREAT COULD ARISE IF STORMS CAN CONGEAL INTO A SMALL
MCS.
..JEWELL.. 03/28/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...SGF...EAX...OAX...TOP...ICT...GID...
LAT...LON 39329417 38579402 37729421 37349523 37779648 38399685
39009762 39779933 40139933 40369882 40259707 40009591
39759471 39329417SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 8:43 PM CDT | Mesoscale Discussion | SPC | Anderson, Douglas, Franklin, Jefferson, Johnson, Leavenworth and 2 more | 2 hr |
| Mar 28, 2:06 PM CDT | Mesoscale Discussion | SPC | Atchison, Clay, Cloud, Dickinson, Douglas, Franklin and 21 more | 84 min |
| Mar 28, 5:48 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Clay, Cloud, Coffey and 23 more | 6 hr |
Nearby
Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Missouri, 2012Mesoscale Discussions in Nebraska, 2012Every mesoscale discussion in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.