Alert archive / Missouri / Tornado Warnings in 2020

Tornado Warning 13, NWS Springfield, MO

April 28, 2020Christian County, Missouri

NWS Springfield, MO issued this tornado warning at Apr 28, 2020, 7:23 PM CDT for Christian County, Missouri. It was in force for 22 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 28, 2020, 7:23 PM CDT (00:23 UTC)
Expired: Apr 28, 2020, 7:45 PM CDT
In force: 22 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Christian County, MO

The radar

The Springfield radar (KSGF), 37 km from the middle of the area, began a volume at 00:24 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 was reported inside it

Time	Report	Where	Remark
Apr 28, 7:30 PM CDT	TSTM WND DMG	Sparta, MO	TREES DOWN, METAL SHED AND OTHER OUTBUILDINGS DAMAGED.
Apr 28, 7:38 PM CDT	TSTM WND DMG	2 Se Bruner, MO	WALLS BLOWN DOWN ON A HOUSE THAT WAS UNDER CONSTRUCTION. BUILDING MATERIALS BLOWN ALL OVER THE PLACE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 3:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.4 hours before the alert went out and 68 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1990 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

513 
WFUS53 KSGF 290023
TORSGF
MOC043-290045-
/O.NEW.KSGF.TO.W.0013.200429T0023Z-200429T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Springfield MO
723 PM CDT Tue Apr 28 2020

The National Weather Service in Springfield has issued a

* Tornado Warning for...
  Northeastern Christian County in southwestern Missouri...

* Until 745 PM CDT.
    
* At 723 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Ozark, moving east at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Nixa...                           Ozark...
  Sparta...                         Highlandville...
  Fremont Hills...                  Oldfield...
  Linden...                         Elkhead...
  Bruner...                         Selmore...
  Keltner...                        

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3709 9330 3709 9300 3708 9298 3709 9297
      3708 9292 3699 9290 3697 9291 3695 9327
TIME...MOT...LOC 0023Z 263DEG 42KT 3703 9324 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Wise

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 7:21 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Dallas, Douglas, Ozark, Taney, Webster and 1 more	54 min
Apr 28, 7:37 PM CDT	Tornado Warning	SGF	Webster	23 min
Apr 28, 7:42 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Phelps, Pulaski	28 min
Apr 28, 7:42 PM CDT	Tornado Warning	SGF	Christian, Douglas	33 min
Apr 28, 7:51 PM CDT	Flash Flood Warning	SGF	Laclede, Pulaski	6 hr
Apr 28, 7:57 PM CDT	Tornado Warning	SGF	Wright	33 min
Apr 28, 8:05 PM CDT	Tornado Warning	SGF	Douglas	25 min
Apr 28, 8:08 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Howell, Ozark, Texas, Wright	67 min
Apr 28, 8:47 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Oregon, Shannon	58 min

Nearby

Tornado Warnings in Missouri, 2020 Every tornado warning in 2020 Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.