Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 112, NWS Springfield, MO

July 17, 2021Newton County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 17, 2021, 7:23 PM CDT for Newton County, Missouri. It was in force for 52 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: Jul 17, 2021, 7:23 PM CDT (00:23 UTC)
Expired: Jul 17, 2021, 8:15 PM CDT
In force: 52 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Newton County, MO

The radar

The Springfield radar (KSGF), 86 km from the middle of the area, began a volume at 00:26 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
Jul 17, 7:35 PM CDT	TSTM WND DMG	4 Ssw Granby, MO	VIA SOCIAL MEDIA A REPORT OF A LARGE EVENT TENT THAT WAS BLOWN COMPLETELY DOWN. NOBODY WAS IN THE TENT AND NOBODY GOT HURT.

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

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.4 hours before the alert went out and 40 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: 346 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

008 
WUUS53 KSGF 180023
SVRSGF
MOC145-180115-
/O.NEW.KSGF.SV.W.0112.210718T0023Z-210718T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
723 PM CDT Sat Jul 17 2021

The National Weather Service in Springfield has issued a

* Severe Thunderstorm Warning for...
  Southeastern Newton County in southwestern Missouri...

* Until 815 PM CDT.

* At 723 PM CDT, a severe thunderstorm was located over Neosho,
  moving south at 10 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Neosho...                         Granby...
  Fairview...                       Newtonia...
  Stella...                         Stark City...

This includes Interstate 49 between mile markers 15 and 20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3676 9445 3691 9438 3693 9417 3694 9411
      3694 9406 3675 9407
TIME...MOT...LOC 0023Z 357DEG 7KT 3684 9434 

HAIL...1.00IN
WIND...60MPH
 
$$

Cramer

1 follow-up statement

398 
WWUS53 KSGF 180106
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
806 PM CDT Sat Jul 17 2021

MOC145-180115-
/O.EXP.KSGF.SV.W.0112.000000T0000Z-210718T0115Z/
Newton MO-
806 PM CDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NEWTON COUNTY
WILL EXPIRE AT 815 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 3676 9445 3691 9438 3693 9417 3694 9411
      3694 9406 3675 9407
TIME...MOT...LOC 0105Z 357DEG 7KT 3676 9433 

$$

Cramer

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:15 PM CDT	Severe Thunderstorm Warning	SGF	Newton	45 min
Jul 17, 7:46 PM CDT	Flash Flood Warning	SGF	Barry, Lawrence, Newton	7 hr
Jul 17, 8:22 PM CDT	Flash Flood Warning	SGF	Barry, McDonald	6 hr
Jul 17, 9:08 PM CDT	Flash Flood Warning	SGF	Barry	7 hr
Jul 18, 2:17 AM CDT	Areal Flood Warning	SGF	Barry, Lawrence, McDonald, Newton	10 hr
Jul 18, 9:51 AM CDT	River Flood Warning	SGF	Bates, Vernon	21 days

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.