Scattered showers and thunderstorms developed during the afternoon and overnight as a moist and unstable airmass interacted with weak upper level disturbance. Isolated rainfall accumulations over an inch occurred.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SGF wrote it up.
Scattered showers and thunderstorms developed during the afternoon and overnight as a moist and unstable airmass interacted with weak upper level disturbance. Isolated rainfall accumulations over an inch occurred.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Springfield, MO wrote its last area forecast discussion before the first event at Jun 22, 1:55 PM CST, 2 hours 25 minutes earlier.
Area Forecast Discussion National Weather Service Springfield MO 255 PM CDT Mon Jun 22 2020 .SHORT TERM...(This evening through Tuesday) Issued at 158 PM CDT Mon Jun 22 2020 Main concerns are storm chances/impacts into the early evening hours. Otherwise the weather looks to turn unseasonably cool for Tuesday/Tuesday night. Two areas of concern. 1) Eastern cwfa where generally weak convection kicked off ahead of shortwave moving through the MO Ozarks. Cloud cover has limited overall instability, but lift ahead of the shortwave has allowed storms to persist. They are running out of real estate for our area but will maintain a watch on this area for some locally heavy rain and very modest severe potential. 2) A sfc boundary/pre frontal trough over the western cwfa will continue to advance slowly east. Some high res models have been indicating that some convection may develop where sfc convergence and instability can overcome weak subsidence/sinking air behind the shortwave and a drier atmosphere. Satellite imagery show some struggling cu towers right now. Onset for development would be over the next couple hours roughly along the Hwy 13 corridor, so will continue to monitor. Instability/vertical shear combo would support some stronger storms here if they can develop, but the temporal window for development looks to be small (through 7-8 pm). A weak sfc high center will shift southeast into southern MO and northern AR by late Tue night with unseasonably cool temperatures. Some/many areas may see lows in the 50s. .LONG TERM...(Wednesday through Monday) Issued at 158 PM CDT Mon Jun 22 2020 Wednesday: Overall quiet. Some limited moisture return may result in some very isolated showers by evening over the western cwfa, but not expecting much in the way of impacts. Thursday: Quiet/warmer wx and more humid with south winds. Can't rule out spotty convection, but a shortwave ridge migrating through should limit chances. Friday-Saturday: Global guidance has been consistent in moving a shortwave from the Pacific Northwest Wed to the IA Cornbelt and central Plains by midday Fri.. Showers/storms chances look to increase as convection develops along a sfc cold front to our northwest. I don't think we will see a true frontal passage but storms moving off the front will have a chance to move into our area. Sunday-Monday: Low confidence, but after the shortwave moves by, the overall pattern becomes more high amplitude as a deep trough moves into the western CONUS. Some evidence that a weak cutoff low may get caught underneath a larger scale ridge in our region, so periodic summertime thunder chances look possible. Very warm seasonable late June weather is expected with low (but non-zero) chances for storms at times. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) Issued at 1239 PM CDT Mon Jun 22 2020 KSGF/KJLN/KBBG tafs: Scattered showers/storms are expected to briefly develop early in the period. Best chances appear to be near KSGF. A front now over western MO will shift east veering light winds to the west and northwest. After the frontal passage (after 00z) expect VFR conditions. We may have to watch for some localized ground/valley fog toward 12z. && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. && SHORT TERM...DSA LONG TERM...DSA AVIATION...DSA
Hazardous Weather Outlook National Weather Service Springfield MO 157 PM CDT Mon Jun 22 2020 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-231900- Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon- St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas- Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton- Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone- Taney-Ozark-Oregon- 157 PM CDT Mon Jun 22 2020 This Hazardous Weather Outlook is for portions of the Missouri Ozarks and extreme southeast Kansas. .DAY ONE...This Afternoon and Tonight. Weather hazards expected... Limited hail risk. Limited thunderstorm wind damage risk. Limited flooding risk. Limited lightning risk. DISCUSSION... There is a marginal/limited risk for severe thunderstorms today into the early evening through 8 pm. The main storm risks will be damaging wind gusts, hail to the size of quarters. Small pockets of locally heavy rain are possible where storms are slow moving, but widespread flooding is not expected. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There is a chance for thunderstorms at times Thursday through Sunday. The best chances are expected to be Friday and Saturday. .SPOTTER INFORMATION STATEMENT... With limited chances for severe storms, a general widespread spotter activation will not be needed through tonight. && More detailed information can be accessed at: http://www.weather.gov/sgf/sitrep This product in graphical format...along with other weather... hydrological and climate information...at http://www.weather.gov/sgf DSA
Special Weather Statement
National Weather Service Springfield MO
508 PM CDT Mon Jun 22 2020
MOZ077-088-222300-
Barton MO-Jasper MO-
508 PM CDT Mon Jun 22 2020
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BARTON AND
NORTHEASTERN JASPER COUNTIES UNTIL 600 PM CDT...
At 508 PM CDT, Doppler radar was tracking a strong thunderstorm over
Lamar, moving southeast at 15 mph.
Penny size hail and wind gusts up to 50 mph will be possible with
this storm.
Locations impacted include...
Lamar... Jasper...
Golden City... Lamar Heights...
Kenoma... Dudenville...
Boston...
This includes Interstate 49 between mile markers 54 and 69.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3753 9437 3755 9428 3745 9408 3731 9409
3722 9427
TIME...MOT...LOC 2208Z 325DEG 14KT 3750 9430
BurchfieldThe Springfield radar (KSGF), 80 km away, was scanning. The volume nearest the first event began at 22:17 UTC.
1 thunderstorm wind. Local standard time, as filed.
Two power poles were reported broken by high winds by Barton County Electric COOP.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2020Every state in 2020This day in weather historyWarnings in Missouri, June 2020
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 903219.