Alert archive / Missouri / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 52, NWS Springfield, MO

April 8, 2020Howell County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Apr 8, 2020, 5:15 PM CDT for Howell County, Missouri. It was in force for 45 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 8, 2020, 5:15 PM CDT (22:15 UTC)
Expired: Apr 8, 2020, 6:00 PM CDT
In force: 45 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), 159 km from the middle of the area, began a volume at 22:16 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 8, 5:32 PM CDT	HAIL 1.75	5 W Lanton, MO	CORRECTS PREVIOUS HAIL REPORT FROM 5 W LANTON.
Apr 8, 5:37 PM CDT	HAIL 1.75	5 W Lanton, MO

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 17 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 8, 4:24 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.3 hours before the alert went out and 180 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: 696 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1530 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

691 
WUUS53 KSGF 082215
SVRSGF
MOC091-082300-
/O.NEW.KSGF.SV.W.0052.200408T2215Z-200408T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
515 PM CDT Wed Apr 8 2020

The National Weather Service in Springfield has issued a

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

* Until 600 PM CDT.

* At 515 PM CDT, a severe thunderstorm was located near Ott, or 13
  miles northwest of Salem in Fulton County, moving east at 35 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...
  Brandsville...                    Lanton...
  Moody...                          

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

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

&&

LAT...LON 3650 9206 3667 9168 3660 9167 3650 9168
TIME...MOT...LOC 2215Z 253DEG 30KT 3651 9199 

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

Titus

4 follow-up statements

068 
WWUS53 KSGF 082229
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
529 PM CDT Wed Apr 8 2020

MOC091-082300-
/O.CON.KSGF.SV.W.0052.000000T0000Z-200408T2300Z/
Howell MO-
529 PM CDT Wed Apr 8 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN HOWELL COUNTY...

At 529 PM CDT, a severe thunderstorm was located near Sturkie, or 11
miles north of Salem in Fulton County, moving east at 35 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Brandsville...                    Lanton...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

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

&&

LAT...LON 3650 9193 3655 9195 3667 9168 3660 9167
      3650 9168
TIME...MOT...LOC 2229Z 253DEG 28KT 3654 9186 

HAIL...1.50IN
WIND...60MPH
 
$$

Titus

117 
WWUS53 KSGF 082233 CCA
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
533 PM CDT Wed Apr 8 2020

MOC091-082300-
/O.COR.KSGF.SV.W.0052.000000T0000Z-200408T2300Z/
Howell MO-
533 PM CDT Wed Apr 8 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN HOWELL COUNTY...

At 533 PM CDT, a severe thunderstorm was located near Sturkie, or 12
miles north of Salem in Fulton County, moving east at 30 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Brandsville...                    Lanton...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

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

&&

LAT...LON 3650 9193 3655 9195 3667 9168 3660 9167
      3650 9168
TIME...MOT...LOC 2229Z 253DEG 28KT 3654 9186 

HAIL...1.75IN
WIND...60MPH
 
$$

Titus

052 
WWUS53 KSGF 082240
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
540 PM CDT Wed Apr 8 2020

MOC091-082300-
/O.CON.KSGF.SV.W.0052.000000T0000Z-200408T2300Z/
Howell MO-
540 PM CDT Wed Apr 8 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN HOWELL COUNTY...

At 539 PM CDT, a severe thunderstorm was located 9 miles northeast of
Sturkie, or 12 miles southeast of West Plains, moving east at 30 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters. Golf ball size hail was reported 
         east of Moody.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Brandsville...                    Lanton...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

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

&&

LAT...LON 3650 9193 3655 9195 3667 9168 3660 9167
      3650 9168
TIME...MOT...LOC 2239Z 253DEG 28KT 3656 9176 

HAIL...1.75IN
WIND...60MPH
 
$$

Titus

661 
WWUS53 KSGF 082251
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
551 PM CDT Wed Apr 8 2020

MOC091-082300-
/O.EXP.KSGF.SV.W.0052.000000T0000Z-200408T2300Z/
Howell MO-
551 PM CDT Wed Apr 8 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HOWELL COUNTY
WILL EXPIRE AT 600 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

LAT...LON 3650 9193 3655 9195 3667 9168 3660 9167
      3650 9168
TIME...MOT...LOC 2250Z 253DEG 28KT 3658 9166 

$$

Titus

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Springfield, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 3:02 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Apr 8, 3:02 PM CDT, 2 hours 13 minutes before

Area Forecast Discussion
National Weather Service Springfield MO
302 PM CDT Wed Apr 8 2020

.SHORT TERM...(This evening through Thursday)
Issued at 233 PM CDT Wed Apr 8 2020

Record to near record warm weather was occuring across SW Missouri
and far se Kansas today. Both West Plains and Vichy/Rolla had
broken their record highs for the day and Joplin tied theirs.
This warmth and a fairly moist airmass over the region was
combining to produce ample instability across the area.

A cold front will move through the area this evening. This front
will move through quickly and will take advantage of the
instability across the region. The best areas for strong to severe
storm development as the front move through the area remain
generally along and east of Highway 65. CAMS models have been
persistent in developing storms in the eastern Ozarks begnning
between 4 and 5 PM. Storms are expected to be elevated with LCL
heights rather high.

The shear over the area is very unidirectional, which should
limit tornado development. However, the amount of instability
available, especially in the hail growth zone will allow for large
hail development up to 2 inches. Isolated larger hail may be
possible with the strongest updrafts. Damaging winds gusts may
occur with the strongest storms.

Winds along and behind the front will increase and become gusty
with 20 to 30 mph gusts expected. Winds will shift quickly to the
north as the front passes. A colder airmass will move into the
region behind the front allowing temperatures to fall overnight
with and only allowing the highs on Thursday to climb into the
Middle 50s to near 60 degrees.

.LONG TERM...(Thursday Night through Wednesday)
Issued at 233 PM CDT Wed Apr 8 2020

Cold surface high pressure will spread over the area Thursday and
Thursday night. This will also allow skies to clear Thursday night
into Friday morning. The combination of cold temperatures, clear
skies and ground moisture will likely lead to wide spread frost as
temperatures fall into the lower 30s. Would expect that we will
need a Frost Advisory for Friday morning, but have held of on any
headlines for now.

An area of low pressure will move through the region over the
weekend which will bring wet weather to the area fro Saturday and
Sunday. Temperatures will warm slightly with from a quarter to a
Half inch of rain expected through the weekend.

Another batch of cold air will then move into the Ozarks for the
start of next week. It is likely that morning lows Monday and
Tuesday will fall into the lower 30s or upper 20s both morning.
This cool weather will remain for much of next week with
northwesterly upper level flow expected to remain through all of
next week. This will result in highs around 50 each day next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1213 PM CDT Wed Apr 8 2020

Will be monitoring for convective development this afternoon and
evening ahead of an approaching cold front. Most of the activity
will remain to the east of the TAF sites, with KSGF and KBBG
having a low end possibility of being impacted by storms. However,
confidence is low enough for the immediate terminals so will not
include in the 18Z TAFs, but will monitor for possible inclusion
as storms develop. Otherwise the cold front will push through the
terminals late this afternoon and early evening, with a period of
gusty winds likely between 00Z-06Z tonight, with some gusts as
high as 20 to 25 knots. Otherwise, flight conditions will be VFR
with the exception of within any storms.

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
KS...NONE.
&&

SHORT TERM...Hatch
LONG TERM...Hatch
AVIATION...Raberding

Hazardous weather outlook, Apr 8, 3:45 PM CDT, 1 hour 30 minutes before

Hazardous Weather Outlook
National Weather Service Springfield MO
345 PM CDT Wed Apr 8 2020

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-092045-
Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon-
St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-
Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton-
Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone-
Taney-Ozark-Oregon-
345 PM CDT Wed Apr 8 2020

This Hazardous Weather Outlook is for portions of the Missouri
Ozarks and extreme southeast Kansas.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Elevated hail risk.
  Elevated thunderstorm wind damage risk.
  Significant lightning risk.

DISCUSSION...

A strong cold front will move very quickly through the outlook
area from 5 pm to 11 pm. A narrow band of scattered thunderstorms
is expected to develop along the front. While the storms may be
short lived, large hail up to two inches in diameter and damaging
winds will be possible. The best chances for the scattered storms
will be east of Missouri Highway 65, but isolated activity is
possible as far west as Interstate 49.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Cold temperatures behind the front will make a frost or light
freeze possible late Thursday night into Friday morning. Another
push of cold air next week will increase frost and freeze
potential Monday night into Tuesday.

Gusty northwest winds and a dry air mass will produce an elevated
fire danger for much of the area Thursday.

Thunderstorms will be possible Friday night and over the weekend
as a storm system approaches then tracks through the area.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation may be needed later today or tonight for
  areas east of Highway 65.

&&

More detailed information can be accessed at:
http://www.weather.gov/sgf/sitrep

This product in graphical format...along with other weather...
hydrological and climate information...at
http://www.weather.gov/sgf

Hatch

In the hours before

Special weather statement, Apr 8, 5:07 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service Springfield MO
507 PM CDT Wed Apr 8 2020

MOZ097-082230-
Howell MO-
507 PM CDT Wed Apr 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL HOWELL COUNTY UNTIL
530 PM CDT...

At 507 PM CDT, trained weather spotters reported a strong
thunderstorm over Ott, or 14 miles northwest of Salem in Fulton
County, moving east at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Lanton...                         Moody...

A Tornado Watch remains in effect until midnight CDT for south
central Missouri.

LAT...LON 3661 9183 3650 9176 3650 9209
TIME...MOT...LOC 2207Z 256DEG 31KT 3649 9204

Titus

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 5:33 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	42 min
Apr 8, 5:54 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2020 Every severe thunderstorm warning in 2020

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.