Alert archive / Missouri / Tornado Warnings in 2020

Tornado Warning 17, NWS Springfield, MO

April 28, 2020Douglas County, Missouri

NWS Springfield, MO issued this tornado warning at Apr 28, 2020, 8:05 PM CDT for Douglas County, Missouri. It was in force for 25 min. 1 report 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, 8:05 PM CDT (01:05 UTC)
Expired: Apr 28, 2020, 8:30 PM CDT
In force: 25 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Douglas County, MO

The radar

The Springfield radar (KSGF), 98 km from the middle of the area, began a volume at 01:05 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, 8:05 PM CDT	TSTM WND DMG	1 Ssw Gentryville, MO	5 TREES DOWN FACING THE SAME DIRECTION ACROSS COUNTY ROAD 345.

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, 1.1 hours before the alert went out and 128 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.

217 
WFUS53 KSGF 290105
TORSGF
MOC067-290130-
/O.NEW.KSGF.TO.W.0017.200429T0105Z-200429T0130Z/

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

The National Weather Service in Springfield has issued a

* Tornado Warning for...
  Douglas County in southwestern Missouri...

* Until 830 PM CDT.
    
* At 805 PM CDT, severe thunderstorms capable of producing a tornado
  were located along a line extending from 6 miles south of Mansfield
  to 11 miles southeast of Ava, 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...
  Drury...                          Vanzant...
  Brushyknob...                     Gentryville...
  Squires...                        

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 3680 9263 3707 9260 3706 9214 3705 9209
      3679 9210
TIME...MOT...LOC 0105Z 266DEG 44KT 3701 9255 3680 9257 

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

$$

Wise

1 follow-up statement

619 
WWUS53 KSGF 290132
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
832 PM CDT Tue Apr 28 2020

MOC067-290141-
/O.EXP.KSGF.TO.W.0017.000000T0000Z-200429T0130Z/
Douglas MO-
832 PM CDT Tue Apr 28 2020

...THE TORNADO WARNING FOR DOUGLAS COUNTY HAS EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central and southwestern Missouri.

LAT...LON 3680 9263 3707 9260 3706 9214 3705 9209
      3679 9210
TIME...MOT...LOC 0131Z 266DEG 44KT 3703 9217 3682 9219 

$$

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, 7:23 PM CDT	Tornado Warning	SGF	Christian	22 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, 8:08 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.