Alert archive / Iowa / Mesoscale Discussions in 2014

Mesoscale Discussion 1007

June 15, 201431 counties in Iowa; 13 counties in Kansas; 20 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2014, 3:00 AM CDT for 31 counties in Iowa; 13 counties in Kansas; 20 counties in Missouri. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Jun 15, 2014, 3:00 AM CDT (08:00 UTC)
Expired
Jun 15, 2014, 4:30 AM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 64 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Humboldt County, IA, Ida County, IA, Lucas County, IA, Madison County, IA, Montgomery County, IA, Page County, IA, Pocahontas County, IA, Polk County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Anderson County, KS, Atchison County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Osage County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Jackson County, MO, Lafayette County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 08:03 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, 8.0 hours before the alert went out and 153 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2014-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2298 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2014-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2298 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1112 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
3.3
Supercell composite
23.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

731 
ACUS11 KWNS 150800
SWOMCD
SPC MCD 150800 
MOZ000-IAZ000-KSZ000-150930-

MESOSCALE DISCUSSION 1007
NWS STORM PREDICTION CENTER NORMAN OK
0300 AM CDT SUN JUN 15 2014

AREAS AFFECTED...W/CNTRL IA...NW MO...NE KS

CONCERNING...SEVERE THUNDERSTORM WATCH 298...300...

VALID 150800Z - 150930Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
298...300...CONTINUES.

SUMMARY...STRONG TO ISOLATED SEVERE WIND GUSTS CAPABLE OF PRODUCING
TREE DAMAGE SHOULD BECOME INCREASINGLY CONFINED TO WW 300.
DOWNSTREAM WW ISSUANCE E OF WW 298 IN IA APPEARS UNLIKELY.

DISCUSSION...AS MENTIONED IN MCD 1006...THE BULK OF 9-KM CAPPI
REFLECTIVITY AOA 35-DBZ HAS BECOME CONFINED TO THE SW/NE-ORIENTED
PORTION OF THE QLCS IN S-CNTRL KS TO NW OK. FARTHER
N...REFLECTIVITY/VELOCITY AND CG LIGHTNING TRENDS HAVE BEEN ON THE
DOWNSWING OVER THE PAST FEW HOURS WITH THE BULK OF STRONG SURFACE
PRESSURE RISES NOW LIMITED FROM KS SWD. AS THE FAR NRN PORTION OF
THE LINE IN W IA PROGRESSES ACROSS THE INCREASINGLY NARROW WARM
SECTOR CHARACTERIZED BY MIDDLE 60S SURFACE DEW POINTS...CONVECTION
SHOULD FURTHER WEAKEN AS IT APPROACHES THE I-35 CORRIDOR. FORWARD
MOMENTUM OF THE LINE AIDED BY A 50-55 KT /ALBEIT WEAKENING/
REAR-INFLOW JET SAMPLED IN OAX/TWX/ICT VWP DATA WILL STILL SUPPORT
STRONG WIND GUSTS CAPABLE OF LOCALIZED TREE DAMAGE.

..GRAMS.. 06/15/2014

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...DMX...EAX...FSD...OAX...TOP...

LAT...LON   42349580 42739525 42849418 42639367 41939334 40839325
            39699342 38139423 38109562 38249593 39029557 39839517
            41129523 42349580

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 7:39 PM CDTMesoscale DiscussionSPCPlymouth, Woodbury96 min
Jun 14, 9:39 PM CDTMesoscale DiscussionSPCPlymouth96 min
Jun 14, 11:22 PM CDTMesoscale DiscussionSPCHarrison, Monona, Woodbury53 min
Jun 14, 11:46 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 19 more5 hr
Jun 15, 1:10 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 11 more95 min
Jun 14, 7:55 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Ellis, Finney, Ford and 13 more95 min
Jun 14, 8:21 PM CDTMesoscale DiscussionSPCDecatur, Norton, Rawlins, Sheridan, Sherman, Thomas84 min
Jun 14, 8:51 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 25 more6 hr
Jun 14, 10:56 PM CDTMesoscale DiscussionSPCButler, Chase, Cowley, Ellsworth, Harper, Harvey and 8 more94 min
Jun 14, 11:32 PM CDTSevere Thunderstorm WatchSPCButler, Chase, Chautauqua, Cowley, Elk, Ellsworth and 12 more5 hr
Jun 15, 12:37 AM CDTMesoscale DiscussionSPCBarber, Butler, Clark, Comanche, Cowley, Harper and 8 more83 min
Jun 15, 1:50 AM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Coffey, Doniphan, Douglas, Franklin and 7 more4 hr
Jun 15, 2:42 AM CDTMesoscale DiscussionSPCAllen, Butler, Chautauqua, Cherokee, Cowley, Crawford and 8 more93 min
Jun 15, 4:42 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette93 min

Nearby

Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Kansas, 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.