Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 103, NWS Springfield, MO

July 9, 2021Howell County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 9, 2021, 8:15 PM CDT for Howell County, Missouri. It was in force for 28 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 9, 2021, 8:15 PM CDT (01:15 UTC)
Expired: Jul 9, 2021, 8:43 PM CDT
In force: 28 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Howell County, MO

The radar

The Springfield radar (KSGF), 137 km from the middle of the area, began a volume at 01:15 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 9, 8:25 PM CDT	HAIL 1.5	Pottersville, MO	DELAYED REPORT. TIME ESTIMATED FROM RADAR.

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, 1.3 hours before the alert went out and 160 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: 2520 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1344 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

186 
WUUS53 KSGF 100115
SVRSGF
MOC091-100200-
/O.NEW.KSGF.SV.W.0103.210710T0115Z-210710T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
815 PM CDT Fri Jul 9 2021

The National Weather Service in Springfield has issued a

* Severe Thunderstorm Warning for...
  Southwestern Howell County in south central Missouri...

* Until 900 PM CDT.

* At 815 PM CDT, a severe thunderstorm was located 10 miles north of
  Bakersfield, or 12 miles southwest of West Plains, moving east at
  20 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...
  West Plains...                    South Fork...
  Pottersville...                   Caulfield...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3661 9212 3670 9212 3675 9211 3682 9183
      3660 9181
TIME...MOT...LOC 0115Z 266DEG 16KT 3667 9208 

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

Wise

2 follow-up statements

371 
WWUS53 KSGF 100124
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
824 PM CDT Fri Jul 9 2021

MOC091-100200-
/O.CON.KSGF.SV.W.0103.000000T0000Z-210710T0200Z/
Howell MO-
824 PM CDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR SOUTHWESTERN HOWELL COUNTY...

At 824 PM CDT, a severe thunderstorm was located 11 miles west of
West Plains, moving east at 15 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
West Plains...                    South Fork...
Pottersville...                   Caulfield...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3661 9212 3670 9212 3675 9211 3682 9183
      3660 9181
TIME...MOT...LOC 0124Z 256DEG 13KT 3669 9207 

HAIL...1.25IN
WIND...60MPH
 
$$

Wise

975 
WWUS53 KSGF 100143
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
843 PM CDT Fri Jul 9 2021

MOC091-100153-
/O.CAN.KSGF.SV.W.0103.000000T0000Z-210710T0200Z/
Howell MO-
843 PM CDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HOWELL COUNTY IS
CANCELLED...
                
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 has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 3661 9212 3670 9212 3675 9211 3682 9183
      3660 9181
TIME...MOT...LOC 0140Z 266DEG 16KT 3670 9196 

$$

Wise

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:16 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Texas	42 min
Jul 9, 7:29 PM CDT	Areal Flood Advisory	SGF	Douglas, Howell, Shannon, Texas	5 hr
Jul 9, 7:54 PM CDT	Flash Flood Warning	SGF	Howell	3 hr
Jul 9, 7:56 PM CDT	Special Weather Statement	SGF	Howell	49 min
Jul 9, 8:09 PM CDT	Special Weather Statement	SGF	Howell	51 min
Jul 10, 3:45 AM CDT	Special Weather Statement	SGF	Oregon	30 min
Jul 10, 8:53 AM CDT	Special Weather Statement	SGF	Vernon	52 min
Jul 10, 11:51 AM CDT	Special Weather Statement	SGF	Webster	39 min
Jul 10, 12:03 PM CDT	Severe Thunderstorm Warning	SGF	Webster, Wright	41 min
Jul 10, 12:35 PM CDT	Special Weather Statement	SGF	Texas	40 min
Jul 10, 1:03 PM CDT	Special Weather Statement	SGF	Shannon	57 min
Jul 10, 1:22 PM CDT	Special Weather Statement	SGF	Howell	53 min
Jul 10, 3:31 PM CDT	Special Weather Statement	SGF	Benton, Camden, Hickory	44 min
Jul 10, 3:56 PM CDT	Flash Flood Warning	SGF	Benton, Camden, Hickory, St. Clair	6 hr
Jul 10, 4:09 PM CDT	River Flood Warning	SGF	St. Clair	6 days
Jul 10, 6:55 PM CDT	Special Weather Statement	SGF	Jasper	50 min

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.