Alert archive / Iowa / Mesoscale Discussions in 2014
Mesoscale Discussion 1017
The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2014, 3:11 PM CDT for 24 counties in Iowa; 13 counties in Minnesota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 16, 2014, 3:11 PM CDT (20:11 UTC)
- Expired
- Jun 16, 2014, 5:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Greene County, IA, Hamilton County, IA, Hancock County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Story County, IA, Webster County, IA, Winnebago County, IA, Wright County, IA, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Faribault County, MN, Jackson County, MN, Martin County, MN, McLeod County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Redwood County, MN, Sibley County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 144 km from the middle of the area, began a volume at 20:15 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
Minneapolis, MN (KMPX), launched 12:00Z, 8.2 hours before the alert went out and 142 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
- 15 J/kg
- Mixed-layer CIN
- -158 J/kg
- Mixed-layer LCL
- 1817 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
449
ACUS11 KWNS 162012
SWOMCD
SPC MCD 162011
IAZ000-MNZ000-162215-
MESOSCALE DISCUSSION 1017
NWS STORM PREDICTION CENTER NORMAN OK
0311 PM CDT MON JUN 16 2014
AREAS AFFECTED...SWRN MN/NWRN IA AND VICINITY
CONCERNING...TORNADO WATCH 302...
VALID 162011Z - 162215Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 302 CONTINUES.
SUMMARY...SEVERE/ISOLATED TORNADO RISK CONTINUES ACROSS PARTS OF WW
302.
DISCUSSION...LATEST RADAR IMAGERY SHOWS STRONG/SEVERE STORMS MOVING
ACROSS SERN SD AND ADJACENT NWRN IA AND SWRN MN...WITH STRONGEST
CELLS ONGOING ATTM FROM THE FSD VICINITY EWD ALONG THE SWRN MN/NWRN
IA BORDER. THIS AREA REMAINS TO THE COOL SIDE OF AN
OUTFLOW-REINFORCED SURFACE BOUNDARY...ALONG A MIXED-LAYER CAPE
GRADIENT PER LATEST OBJECTIVE ANALYSES.
WITH DEEP-LAYER SHEAR ACROSS THE AREA SUPPORTIVE OF
SUPERCELLS...STORMS WILL CONTINUE TO POSE A RISK FOR LARGE HAIL --
ALONG WITH LOCALLY DAMAGING WINDS AND POSSIBLY AN ISOLATED TORNADO
OR TWO. IN ADDITION...STORMS ARE INCREASING ACROSS PARTS OF ERN NEB
ATTM...AND MAY SPREAD EWD INTO PARTS OF WW 302 LATER THIS
AFTERNOON/EVENING YIELDING ADDITIONAL SEVERE/TORNADO RISK ACROSS
THIS AREA.
..GOSS.. 06/16/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MPX...DMX...FSD...OAX...
LAT...LON 45209445 45149399 41889329 41739578 43509609 44169591
44719486 45209445SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 7:12 AM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Lyon, Mills, Monona, Plymouth and 4 more | 9 hr |
| Jun 16, 10:19 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 64 more | 116 min |
| Jun 16, 12:25 PM CDT | Tornado Watch | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 33 more | 8 hr |
| Jun 16, 2:13 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills | 62 min |
| Jun 16, 2:19 PM CDT | Mesoscale Discussion | SPC | Davis, Jefferson, Lee, Van Buren, Wapello | 86 min |
| Jun 16, 3:07 PM CDT | Tornado Watch | SPC | Harrison, Monona, Shelby | 7 hr |
| Jun 16, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more | 5 hr |
| Jun 16, 5:10 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 3 more | 35 min |
| Jun 16, 5:37 PM CDT | Tornado Watch | SPC | Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 38 more | 6 hr |
| Jun 16, 5:46 PM CDT | Tornado Watch | SPC | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 6 hr |
Nearby
Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Minnesota, 2014Every mesoscale discussion in 2014
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.