Alert archive / Missouri / Mesoscale Discussions in 2004
Mesoscale Discussion 855
The Storm Prediction Center issued this mesoscale discussion at May 23, 2004, 9:54 PM CDT for 4 counties in Arkansas; 17 counties in Missouri; 17 counties in Oklahoma. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- May 23, 2004, 9:54 PM CDT (02:54 UTC)
- Expired
- May 23, 2004, 11:30 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 38 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Madison County, AR, Barry County, MO, Christian County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Phelps County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Hughes County, OK, Lincoln County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Payne County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Springfield radar (KSGF), 91 km from the middle of the area, began a volume at 02:56 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 00:00Z, 2.9 hours before the alert went out and 39 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
- 2346 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1162 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
208 ACUS11 KWNS 240254 SWOMCD SPC MCD 240254 ARZ000-MOZ000-OKZ000-240430- MESOSCALE DISCUSSION 0855 NWS STORM PREDICTION CENTER NORMAN OK 0954 PM CDT SUN MAY 23 2004 AREAS AFFECTED...SRN MO/NE OK CONCERNING...SEVERE THUNDERSTORM WATCH 266...268... VALID 240254Z - 240430Z CONTINUE REMAINING VALID PORTION OF WW 268 ACROSS NE OK. WW 266 FOR SRN MO WILL BE ALLOWED TO EXPIRE AS SCHEDULED AT 03Z. THREAT FOR LARGE HAIL /AND POSSIBLY ISOLD DAMAGING WIND GUSTS/ WILL PERSIST FROM FAR SW MO INTO NE OK FOR THE NEXT SEVERAL HOURS INVOF OF SLOW MOVING NE-SW ORIENTED COLD FRONT. SCENARIO SUPPORTED BY MODEST S/SW LOW LEVEL JET /25-35 KTS PER REGIONAL VWPS/ INTERACTING WITH LOW LEVEL BAROCLINIC ZONE. MODIFIED 00Z SGF/OUN RAOBS IN CONJUNCTION WITH 02Z OBJECTIVE ANALYSIS SUGGESTS 2500-3500 J/KG MUCAPE REMAINS ALONG/AHEAD OF COLD FRONT...WITH LIGHT SE BOUNDARY LAYER FLOW/DEEP LAYER SHEAR OF 35-40 KTS CONTRIBUTING TO STORM ORGANIZATION. ACROSS SCNTRL MO...ALTHOUGH ISOLD HAIL/WIND THREAT MAY PERSIST FOR NEXT HOUR OR SO...LOSS OF DAYTIME HEATING WILL CONTINUE TO YIELD A DOWNTREND TREND IN CONVECTIVE INTENSITY. THUS WW REISSUANCE WILL NOT BE NECESSARY. ..GUYER.. 05/24/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...SGF...TSA...OUN...LSX...LZK... 34779657 35999721 36999477 35879409 36479502 37329407 37599253 38409116 38129035 36489234
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | Washington | 5 hr |
| May 24, 1:54 PM CDT | Mesoscale Discussion | SPC | Clay, Greene, Randolph | 96 min |
| May 23, 8:40 PM CDT | Mesoscale Discussion | SPC | Jefferson, Saint Charles, Sainte Genevieve, Saint Francois, Saint Louis, City of Saint Louis | 65 min |
| May 24, 9:30 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Barton, Bates, Buchanan, Caldwell and 15 more | 2 hr |
| May 24, 11:30 AM CDT | Tornado Watch | SPC | Andrew, Atchison, Daviess, Gentry, Grundy, Harrison and 4 more | 11 hr |
| May 24, 12:37 PM CDT | Mesoscale Discussion | SPC | Bates, Buchanan, Caldwell, Carroll, Cass, Clay and 10 more | 83 min |
| May 24, 1:10 PM CDT | Tornado Watch | SPC | Andrew, Bates, Buchanan, Caldwell, Carroll, Cass and 11 more | 9 hr |
| May 24, 2:39 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Daviess, DeKalb, Gentry, Grundy and 5 more | 96 min |
| May 24, 3:28 PM CDT | Mesoscale Discussion | SPC | Bates, Buchanan, Caldwell, Carroll, Cass, Clay and 10 more | 92 min |
| May 24, 5:26 PM CDT | Mesoscale Discussion | SPC | Adair, Andrew, Atchison, Audrain, Boone, Buchanan and 37 more | 94 min |
| May 24, 5:45 PM CDT | Tornado Watch | SPC | Adair, Audrain, Boone, Carroll, Chariton, Clark and 19 more | 5 hr |
| May 24, 6:57 PM CDT | Mesoscale Discussion | SPC | Platte | 48 min |
| May 24, 3:32 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Custer, Dewey and 10 more | 118 min |
| May 24, 3:57 PM CDT | Mesoscale Discussion | SPC | Grant, Kay, Noble | 93 min |
| May 24, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 19 more | 5 hr |
| May 24, 6:03 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Comanche and 20 more | 87 min |
Nearby
Mesoscale Discussions in Missouri, 2004Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Arkansas, 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.