Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 27, NWS Springfield, MO

April 4, 2017Douglas County, Howell County, Ozark County, Missouri

NWS Springfield, MO issued this tornado warning at Apr 4, 2017, 10:25 PM CDT for Douglas County, Howell County, Ozark County, Missouri. It was in force for 50 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 4, 2017, 10:25 PM CDT (03:25 UTC)
Expired: Apr 4, 2017, 11:15 PM CDT
In force: 50 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Douglas County, MO, Howell County, MO, Ozark County, MO

The radar

The Springfield radar (KSGF), 117 km from the middle of the area, began a volume at 03:28 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 4, 11:09 PM CDT	HAIL 1	Willow Springs, MO	EMERGENCY MANAGERS REPORTED QUARTER SIZED HAIL IN WILLOW SPRINGS.
Apr 4, 11:10 PM CDT	HAIL 1.5	Willow Springs, MO	EMERGENCY MANAGERS REPORTED PING PONG BALL SIZED HAIL IN WILLOW SPRINGS.

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 4, 2:31 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 4, 9:12 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 142 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: 326 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1384 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 312 m²/s²
0-3 km storm-relative helicity: 743 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 12.5

Open this sounding in Storm Lab

The text

As transmitted.

919 
WFUS53 KSGF 050325
TORSGF
MOC067-091-153-050415-
/O.NEW.KSGF.TO.W.0027.170405T0325Z-170405T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Springfield MO
1025 PM CDT TUE APR 4 2017

The National Weather Service in Springfield has issued a

* Tornado Warning for...
  Northeastern Ozark County in southwestern Missouri...
  Southeastern Douglas County in southwestern Missouri...
  Northwestern Howell County in south central Missouri...

* Until 1115 PM CDT
    
* At 1025 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Gainesville, or 22 miles northeast of Bull
  Shoals, moving northeast at 50 mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  West Plains...                    Willow Springs...
  Gainesville...                    Pomona...
  Siloam Springs...                 Brixey...
  Sycamore...                       Dora...
  Rockbridge...                     Zanoni...

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 cluster 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 3663 9227 3661 9239 3663 9245 3670 9248
      3677 9244 3690 9229 3702 9209 3702 9193
      3691 9182 3678 9190
TIME...MOT...LOC 0325Z 233DEG 43KT 3666 9240 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Cramer

2 follow-up statements

620 
WWUS53 KSGF 050342
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
1042 PM CDT TUE APR 4 2017

MOC067-091-153-050415-
/O.CON.KSGF.TO.W.0027.000000T0000Z-170405T0415Z/
Ozark MO-Douglas MO-Howell MO-
1042 PM CDT TUE APR 4 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
NORTHEASTERN OZARK...SOUTHEASTERN DOUGLAS AND NORTHWESTERN HOWELL
COUNTIES...
    
At 1041 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Dora, or 18 miles southwest of Willow Springs, 
moving northeast at 50 mph.

HAZARD...Tornado and quarter size hail. 

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...
Willow Springs...                 Pomona...
Dora...                           Siloam Springs...

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 cluster 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 3674 9212 3673 9222 3679 9232 3686 9231
      3690 9229 3702 9209 3702 9193 3691 9182
      3679 9191
TIME...MOT...LOC 0341Z 233DEG 43KT 3679 9219 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Cramer

166 
WWUS53 KSGF 050416
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
1116 PM CDT TUE APR 4 2017

MOC067-091-153-050426-
/O.EXP.KSGF.TO.W.0027.000000T0000Z-170405T0415Z/
Ozark MO-Douglas MO-Howell MO-
1116 PM CDT TUE APR 4 2017

...THE TORNADO WARNING FOR NORTHEASTERN OZARK...SOUTHEASTERN DOUGLAS
AND NORTHWESTERN HOWELL COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.

A severe thunderstorm watch remains in effect until 300 AM CDT for
south central and southwestern Missouri.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Springfield.

LAT...LON 3674 9212 3673 9222 3679 9232 3686 9231
      3690 9229 3702 9209 3702 9193 3691 9182
      3679 9191
TIME...MOT...LOC 0416Z 233DEG 43KT 3703 9180 

$$

Cramer

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 7:14 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, Newton	46 min
Apr 4, 7:16 PM CDT	Severe Thunderstorm Warning	SGF	Barry, McDonald, Newton	59 min
Apr 4, 7:42 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Dade, Greene	63 min
Apr 4, 8:02 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, Stone	43 min
Apr 4, 8:30 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Dallas, Polk, Webster	60 min
Apr 4, 8:54 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Wright	66 min
Apr 4, 9:09 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Stone, Taney	51 min
Apr 4, 9:24 PM CDT	Tornado Warning	SGF	Christian, Douglas, Taney, Webster, Wright	51 min
Apr 4, 9:46 PM CDT	Tornado Warning	SGF	Ozark, Taney	44 min
Apr 4, 9:49 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Phelps, Pulaski, Texas, Wright	41 min
Apr 4, 10:29 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Maries, Phelps, Pulaski, Texas	61 min
Apr 4, 11:01 PM CDT	Tornado Warning	SGF	Howell, Shannon, Texas	44 min
Apr 4, 11:41 PM CDT	Tornado Warning	SGF	Shannon	37 min
Apr 4, 11:50 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Oregon, Shannon	37 min
Apr 5, 12:44 AM CDT	Areal Flood Advisory	SGF	Dent, Douglas, Howell, Laclede, Ozark, Phelps and 3 more	9 hr
Apr 5, 2:42 AM CDT	Areal Flood Warning	SGF	Dent, Phelps, Pulaski, Texas, Wright	7 hr
Apr 5, 3:32 AM CDT	Wind Advisory	SGF	Barry, Barton, Benton, Cedar, Christian, Dade and 10 more	15 hr
Apr 5, 9:44 AM CDT	Areal Flood Warning	SGF	Dent, Douglas, Howell, Laclede, Ozark, Texas and 1 more	6 hr
Apr 5, 6:32 PM CDT	River Flood Warning	SGF	Pulaski	13 hr

Nearby

Tornado Warnings in Missouri, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.