Alert archive / Missouri / Tornado Warnings in 2021

Tornado Warning 13, NWS Springfield, MO

March 17, 2021Douglas County, Missouri

NWS Springfield, MO issued this tornado warning at Mar 17, 2021, 7:43 PM CDT for Douglas County, Missouri. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 17, 2021, 7:43 PM CDT (00:43 UTC)
Expired: Mar 17, 2021, 8:15 PM CDT
In force: 32 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), 63 km from the middle of the area, began a volume at 00:47 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 17, 2:00 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.7 hours before the alert went out and 92 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: 283 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

781 
WFUS53 KSGF 180043
TORSGF
MOC067-180115-
/O.NEW.KSGF.TO.W.0013.210318T0043Z-210318T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Springfield MO
743 PM CDT Wed Mar 17 2021

The National Weather Service in Springfield has issued a

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

* Until 815 PM CDT.
    
* At 743 PM CDT, severe thunderstorms capable of producing a tornado
  were located along a line extending from 10 miles east of Sparta to
  12 miles south of Seymour to 9 miles west of Ava to 12 miles
  northeast of Taneyville, moving east at 40 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...
  Ava...                            Dogwood...
  Goodhope...                       

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.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3685 9289 3690 9288 3701 9291 3703 9291
      3707 9278 3707 9258 3706 9254 3687 9254
TIME...MOT...LOC 0043Z 266DEG 33KT 3700 9290 3697 9283 3690 9282 3687
9287

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

$$

Wise

2 follow-up statements

540 
WWUS53 KSGF 180053
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
753 PM CDT Wed Mar 17 2021

MOC067-180115-
/O.CON.KSGF.TO.W.0013.000000T0000Z-210318T0115Z/
Douglas MO-
753 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN DOUGLAS COUNTY...
    
At 753 PM CDT, severe thunderstorms capable of producing tornadoes
were located along a line extending from 7 miles south of Seymour to
near Ava to 17 miles northeast of Taneyville, moving northeast at 25
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...
Ava...                            Dogwood...
Goodhope...                       

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.

This line of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3688 9276 3691 9281 3702 9284 3704 9286
      3707 9278 3707 9258 3706 9254 3689 9254
TIME...MOT...LOC 0053Z 244DEG 23KT 3704 9281 3699 9274 3692 9274 3687
9276

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

$$

Wise

397 
WWUS53 KSGF 180109
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
809 PM CDT Wed Mar 17 2021

MOC067-180118-
/O.EXP.KSGF.TO.W.0013.000000T0000Z-210318T0115Z/
Douglas MO-
809 PM CDT Wed Mar 17 2021

...THE TORNADO WARNING FOR NORTHWESTERN DOUGLAS COUNTY WILL EXPIRE AT
815 PM CDT...

The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Tornado Watch remains in effect until 900 PM CDT for southwestern
Missouri.

LAT...LON 3688 9276 3691 9281 3702 9284 3704 9286
      3707 9278 3707 9258 3706 9254 3689 9254
TIME...MOT...LOC 0108Z 266DEG 33KT 3705 9267 3700 9260 3693 9260 3688
9262

$$

Wise

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 7:06 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	54 min
Mar 17, 7:24 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Webster, Wright	66 min
Mar 17, 7:29 PM CDT	Flash Flood Warning	SGF	Barry, Christian, Dade, Greene, Lawrence, Polk and 2 more	4 hr
Mar 17, 8:36 PM CDT	Special Weather Statement	SGF	Laclede, Wright	39 min
Mar 17, 9:27 PM CDT	Areal Flood Warning	SGF	McDonald, Newton	8 hr
Mar 17, 10:01 PM CDT	Areal Flood Warning	SGF	Lawrence, Newton	8 hr
Mar 17, 11:19 PM CDT	Areal Flood Warning	SGF	Barry, Lawrence, Stone	7 hr
Mar 17, 11:21 PM CDT	Areal Flood Warning	SGF	Barry, Christian, Dade, Greene, Lawrence, Polk and 2 more	8 hr
Mar 17, 11:28 PM CDT	Areal Flood Warning	SGF	Benton, Cedar, Hickory, St. Clair	8 hr
Mar 18, 12:34 AM CDT	River Flood Warning	SGF	Cedar	47 hr
Mar 18, 9:45 AM CDT	River Flood Warning	SGF	Jasper	37 hr

Nearby

Tornado Warnings in Missouri, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.