Alert archive / Missouri / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 218

May 26, 201621 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at May 26, 2016, 5:29 PM CDT for 21 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 26, 2016, 5:29 PM CDT (22:29 UTC)
Expired
May 26, 2016, 11:31 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 21 counties

Audrain County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cole County, MO, Crawford County, MO, Dent County, MO, Gasconade County, MO, Laclede County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Phelps County, MO, Pulaski County, MO, Shannon County, MO, Texas County, MO

The radar

The St Louis radar (KLSX), 151 km from the middle of the area, began a volume at 22:29 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 26, 6:28 PM CDTSevere Thunderstorm WarningSGFMorgan19 min
May 26, 6:35 PM CDTSevere Thunderstorm WarningSGFMiller40 min
May 26, 8:10 PM CDTFlash Flood WarningSGFBenton5 hr
May 26, 8:17 PM CDTFlash Flood WarningSGFMiller5 hr
May 26, 8:39 PM CDTSevere Thunderstorm WarningLSXCole26 min
May 26, 8:44 PM CDTFlash Flood WarningSGFMiller, Morgan5 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.5 hours before the alert went out and 229 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 2016-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2996 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 2016-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 250 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
2996 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
250 m²/s²
0-3 km storm-relative helicity
232 m²/s²
Significant tornado parameter
2.4
Supercell composite
13.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 10:07 PM CDTMesoscale DiscussionSPCAndrew, Buchanan, Cass, Clay, Jackson, Platte83 min
May 25, 11:08 PM CDTSevere Thunderstorm WatchSPCAndrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 23 more5 hr
May 26, 10:33 AM CDTMesoscale DiscussionSPCAtchison, Buchanan, Cass, Clay, Holt, Jackson and 2 more57 min
May 26, 1:45 PM CDTMesoscale DiscussionSPCNew Madrid, Pemiscot2 hr
May 26, 2:09 PM CDTTornado WatchSPCAndrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 25 more8 hr
May 26, 4:56 PM CDTMesoscale DiscussionSPCBenton, Boone, Caldwell, Callaway, Camden, Carroll and 22 more94 min
May 26, 5:27 PM CDTMesoscale DiscussionSPCAtchison, Nodaway, Worth63 min

Nearby

Severe Thunderstorm Watches in Missouri, 2016Every severe thunderstorm watch in 2016

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.