Alert archive / Missouri / Mesoscale Discussions in 2004
Mesoscale Discussion 556
The Storm Prediction Center issued this mesoscale discussion at May 2, 2004, 11:52 AM CDT for 10 counties in Kansas; 30 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 2, 2004, 11:52 AM CDT (16:52 UTC)
- Expired
- May 2, 2004, 2:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Allen County, KS, Anderson County, KS, Bourbon County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Franklin County, KS, Johnson County, KS, Linn County, KS, Miami County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Cole County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO
The radar
The Pleasant Hill radar (KEAX), 79 km from the middle of the area, began a volume at 16:53 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 nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 4.9 hours before the alert went out and 147 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1832 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- -71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
970 ACUS11 KWNS 021652 SWOMCD SPC MCD 021652 MOZ000-KSZ000-021915- MESOSCALE DISCUSSION 0556 NWS STORM PREDICTION CENTER NORMAN OK 1152 AM CDT SUN MAY 02 2004 AREAS AFFECTED...ERN KS INTO MO OZARKS CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 021652Z - 021915Z CONVECTIVE TRENDS ARE BEING MONITORED FOR POSSIBILITY OF WW...BUT PRESENT INDICATIONS ARE WW MAY NOT BE NEEDED. MID-LEVEL CYCLONIC VORTICITY CENTER CONTINUES TO SLOWLY EVOLVE IN ASSOCIATION WITH STRONG JET STREAK DIGGING INTO THE LOWER MISSOURI VALLEY. THIS IS CONTRIBUTING TO STRENGTHENING MID-LEVEL FORCING FOR UPWARD VERTICAL MOTION IN A SWATH FROM NORTHEAST KANSAS INTO THE MISSOURI OZARKS...WHERE INCREASE IN LOW TOPPED SURFACE-BASED CONVECTIVE DEVELOPMENT APPEARS LIKELY BY THE 19-21Z TIME FRAME. AS MEAN MIXED LAYER CAPE INCREASES UP TO 500 J/KG OR SO WITH FURTHER HEATING... UPDRAFTS SHOULD BECOME STRONG ENOUGH IN FAVORABLY COOL/SHEARED ENVIRONMENT FOR HAIL...WHICH MAY APPROACH OR BRIEFLY EXCEED SEVERE LIMITS. ..KERR.. 05/02/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LSX...SGF...EAX...TOP...ICT... 38999522 39009450 39009333 38439206 38079179 37399137 36809317 37189485 38339605
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 9:49 AM CDT | Mesoscale Discussion | SPC | Franklin, Gasconade, Lincoln, Montgomery, Pike, Saint Charles and 2 more | 116 min |
Nearby
Mesoscale Discussions in Missouri, 2004Mesoscale Discussions in Kansas, 2004Every mesoscale discussion in 2004
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.