Alert archive / Missouri / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Springfield, MO

April 3, 2018Howell County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Apr 3, 2018, 3:11 PM CDT for Howell County, Missouri. It was in force for 14 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: Apr 3, 2018, 3:11 PM CDT (20:11 UTC)
Expired: Apr 3, 2018, 3:25 PM CDT
In force: 14 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Howell County, MO

The radar

The Springfield radar (KSGF), 141 km from the middle of the area, began a volume at 20:15 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.

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 3, 1:33 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.2 hours before the alert went out and 174 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: 893 J/kg
Mixed-layer CIN: -325 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 514 m²/s²
0-3 km storm-relative helicity: 499 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

187 
WUUS53 KSGF 032011
SVRSGF
MOC091-032045-
/O.NEW.KSGF.SV.W.0021.180403T2011Z-180403T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
311 PM CDT TUE APR 3 2018

The National Weather Service in Springfield has issued a

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

* Until 345 PM CDT

* At 311 PM CDT, a severe thunderstorm was located 8 miles southeast
  of Willow Springs, moving northeast at 50 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* Locations impacted include...
  Mountain View...                  Willow Springs...
  Pomona...                         Peace Valley...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 800 PM CDT for south central
Missouri.

LAT...LON 3693 9203 3705 9176 3705 9166 3688 9166
      3683 9195
TIME...MOT...LOC 2011Z 245DEG 43KT 3689 9191 

HAIL...1.00IN
WIND...<50MPH
 
$$

Wise

1 follow-up statement

650 
WWUS53 KSGF 032025
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
325 PM CDT TUE APR 3 2018

MOC091-032035-
/O.CAN.KSGF.SV.W.0021.000000T0000Z-180403T2045Z/
Howell MO-
325 PM CDT TUE APR 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN 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.

A tornado watch remains in effect until 800 PM CDT for south central
Missouri.

LAT...LON 3693 9203 3705 9176 3705 9166 3688 9166
      3683 9195
TIME...MOT...LOC 2024Z 245DEG 43KT 3731 9104 

$$

Wise

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 10:59 PM CDT	Special Weather Statement	SGF	Phelps	46 min
Apr 3, 3:35 AM CDT	Freeze Warning	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	29 hr
Apr 3, 12:05 PM CDT	Wind Advisory	SGF	Barton, Cedar, Dade, Jasper, Lawrence, McDonald and 2 more	7 hr
Apr 3, 1:41 PM CDT	Special Weather Statement	SGF	Dent	49 min
Apr 3, 2:31 PM CDT	Special Weather Statement	SGF	Dent	14 min
Apr 3, 2:35 PM CDT	Severe Thunderstorm Warning	SGF	Dent	25 min
Apr 3, 2:50 PM CDT	Special Weather Statement	SGF	Howell	40 min
Apr 3, 2:59 PM CDT	Severe Thunderstorm Warning	SGF	Howell	31 min
Apr 3, 3:09 PM CDT	Severe Thunderstorm Warning	SGF	Shannon	15 min
Apr 3, 3:27 PM CDT	Special Weather Statement	SGF	Oregon	48 min
Apr 3, 3:41 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	34 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2018 Every severe thunderstorm warning in 2018

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.