Alert archive / Arkansas / Mesoscale Discussions in 2019

Mesoscale Discussion 925

June 1, 201914 counties in Arkansas; 13 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2019, 2:27 PM CDT for 14 counties in Arkansas; 13 counties in Missouri. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jun 1, 2019, 2:27 PM CDT (19:27 UTC)
Expired
Jun 1, 2019, 4:00 PM CDT
In force
93 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 27 counties

Baxter County, AR, Boone County, AR, Clay County, AR, Cleburne County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Lawrence County, AR, Marion County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Butler County, MO, Carter County, MO, Douglas County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Reynolds County, MO, Ripley County, MO, Shannon County, MO, Taney County, MO, Texas County, MO, Wayne County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 154 km from the middle of the area, began a volume at 19:28 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

Springfield, MO (KSGF), launched 12:00Z, 7.5 hours before the alert went out and 179 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, Springfield, MO at 12:00Z on 2019-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 199 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, Springfield, MO at 12:00Z on 2019-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.19395878Sfc1 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
199 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1457 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 1, 3:02 PM CDTMesoscale DiscussionSPCAdair, Audrain, Boone, Buchanan, Caldwell, Callaway and 37 more118 min
Jun 1, 3:33 PM CDTSevere Thunderstorm WatchSPCAdair, Audrain, Bates, Benton, Boone, Callaway and 41 more7 hr
Jun 1, 5:00 PM CDTMesoscale DiscussionSPCBarton, Cedar, Christian, Dade, Greene, Jasper and 3 more60 min
Jun 1, 5:20 PM CDTSevere Thunderstorm WatchSPCBarry, Barton, Benton, Camden, Cedar, Christian and 20 more5 hr
Jun 1, 6:07 PM CDTMesoscale DiscussionSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 35 more83 min

Nearby

Mesoscale Discussions in Arkansas, 2019Mesoscale Discussions in Missouri, 2019Every mesoscale discussion in 2019

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.