Alert archive / Iowa / Mesoscale Discussions in 2005
Mesoscale Discussion 261
The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2005, 8:26 PM CST for 47 counties in Iowa; 4 counties in Kansas; 15 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 6, 2005, 8:26 PM CST (02:26 UTC)
- Expired
- Mar 6, 2005, 10:30 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 66 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Delaware County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Iowa County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO
The radar
The Des Moines radar (KDMX), 100 km from the middle of the area, began a volume at 02:27 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
Omaha, NE (KOAX), launched 00:00Z, 2.4 hours before the alert went out and 205 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
- 92 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 2292 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 070226 SWOMCD SPC MCD 070226 IAZ000-MOZ000-KSZ000-NEZ000-070430- MESOSCALE DISCUSSION 0261 NWS STORM PREDICTION CENTER NORMAN OK 0826 PM CST SUN MAR 06 2005 AREAS AFFECTED...NERN KS...NWRN MO THROUGH MUCH OF IA CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 070226Z - 070430Z THUNDERSTORMS SHOULD CONTINUE DEVELOPING NEXT SEVERAL HOURS FROM NERN KS...NWRN MO INTO MUCH OF IA. ISOLATED STORMS MAY REMAIN CAPABLE OF PRODUCING HAIL AND STRONG WIND GUSTS THIS EVENING. AT THIS TIME...THREAT DOES NOT APPEAR SIGNIFICANT ENOUGH TO WARRANT A WW. WSWLY LOW LEVEL JET WILL CONTINUE TO STRENGTHEN IN ADVANCE OF STRONG VORT MAX DROPPING SEWD THROUGH KS AND NEB. THE LOW LEVEL THETA-E ADVECTION UNDERNEATH STEEP LAPSE RATES AND SEWD MOVING THERMAL TROUGH WILL CONTRIBUTE TO NEWD DESTABILIZATION THROUGH NRN MO AND IA THIS EVENING. HOWEVER...OWING TO LIMITED LOW LEVEL MOISTURE... MUCAPE SHOULD REMAIN GENERALLY AOB 500 J/KG. THUNDERSTORMS SHOULD CONTINUE FROM NERN KS THROUGH NWRN IA WITHIN ZONE OF INCREASING VERTICAL MOTION AND DESTABILIZATION...AND GRADUALLY SPREAD EWD OVERNIGHT. STEEP LAPSE RATES AND COLD THERMODYNAMIC PROFILES WILL SUPPORT A THREAT FOR HAIL WITHIN THE STRONGER STORMS. RELATIVELY DRY BOUNDARY LAYERS MAY ALSO SUPPORT THREAT FOR ISOLATED STRONG WIND GUSTS. WEAK INSTABILITY SHOULD SERVE AS A LIMITING FACTOR FOR A MORE ROBUST SEVERE THREAT. ..DIAL.. 03/07/2005 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DVN...ARX...DMX...EAX...OAX...TOP... 38909647 42019456 43179260 42269066 39919323
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 2:33 AM CST | Mesoscale Discussion | SPC | Cherokee | 117 min |
Nearby
Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Missouri, 2005Mesoscale Discussions in Kansas, 2005Every mesoscale discussion in 2005
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.