Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 180, NWS Springfield, MO

May 11, 2017Shannon County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at May 11, 2017, 6:40 PM CDT for Shannon County, Missouri. It was in force for 44 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: May 11, 2017, 6:40 PM CDT (23:40 UTC)
Expired: May 11, 2017, 7:24 PM CDT
In force: 44 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Shannon County, MO

The radar

The St Louis radar (KLSX), 176 km from the middle of the area, began a volume at 23:41 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
May 11, 6:57 PM CDT	TSTM WND DMG	5 Ese Summersville, MO	TREES UPROOTED.

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 4 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
May 11, 3:17 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.7 hours before the alert went out and 230 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1011 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

359 
WUUS53 KSGF 112340
SVRSGF
MOC203-120045-
/O.NEW.KSGF.SV.W.0180.170511T2340Z-170512T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
640 PM CDT THU MAY 11 2017

The National Weather Service in Springfield has issued a

* Severe Thunderstorm Warning for...
  Shannon County in south central Missouri...

* Until 745 PM CDT

* At 639 PM CDT, a severe thunderstorm was located over Summersville,
  or 13 miles north of Mountain View, moving east at 45 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...
  Winona...                         Eminence...
  Summersville...                   Round Spring...
  West Eminence...                  Alley Spring...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3710 9102 3709 9121 3696 9122 3710 9166
      3732 9165 3732 9150 3728 9123 3725 9112
      3720 9112 3720 9109 3718 9109 3716 9104
TIME...MOT...LOC 2339Z 283DEG 41KT 3719 9170 

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

Cramer

2 follow-up statements

464 
WWUS53 KSGF 120008
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
708 PM CDT THU MAY 11 2017

MOC203-120045-
/O.CON.KSGF.SV.W.0180.000000T0000Z-170512T0045Z/
Shannon MO-
708 PM CDT THU MAY 11 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR CENTRAL SHANNON COUNTY...

At 708 PM CDT, a severe thunderstorm was located over Eminence, or 21
miles northeast of Mountain View, moving east at 40 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...
Eminence...                       Round Spring...
West Eminence...                  Alley Spring...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3710 9102 3709 9121 3702 9122 3710 9150
      3719 9155 3725 9154 3729 9143 3728 9123
      3725 9112 3720 9112 3720 9109 3718 9109
      3716 9104
TIME...MOT...LOC 0008Z 278DEG 33KT 3718 9138 

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

Cramer

584 
WWUS53 KSGF 120024
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
724 PM CDT THU MAY 11 2017

MOC203-120034-
/O.CAN.KSGF.SV.W.0180.000000T0000Z-170512T0045Z/
Shannon MO-
724 PM CDT THU MAY 11 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SHANNON 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.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
south central Missouri.

LAT...LON 3710 9102 3709 9121 3702 9122 3710 9150
      3719 9155 3725 9154 3729 9143 3728 9123
      3725 9112 3720 9112 3720 9109 3718 9109
      3716 9104
TIME...MOT...LOC 0022Z 283DEG 41KT 3714 9115 

$$

Cramer

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 May 11, 2:11 PM CDT, 4 hours 29 minutes earlier.

Area forecast discussion, May 11, 2:11 PM CDT, 4 hours 29 minutes before

Area Forecast Discussion
National Weather Service Springfield MO
211 PM CDT Thu May 11 2017

.SHORT TERM...(This evening through Friday)
Issued at 210 PM CDT Thu May 11 2017

Currently seeing a break in the thunderstorm activity early this
afternoon, with clearing occurring across the southern portions
of the CWA. This has allowed temperatures to quickly warm into the
mid 70s where sun has broken through. Combined with dewpoints in
the mid to upper 60s, 2000-2500 J/kg of MLCAPE is in place across
the region, along with plenty of deep layer shear.

Convection has already started to develop across northeastern
Oklahoma, and should continue to expand in coverage toward the
north and east this afternoon and this evening. This initial
convection will yield a wind and especially a hail threat, with
very steep mid level lapse rates suggesting hail up to 2" in
diameter. There will also be a conditional tornado threat with any
storm that is able to move along the front or a mesoscale
boundary.

Convection will continue to develop into and through the evening
hours, and along with the severe weather threat, a localized flood
threat will be possible as well where multiple storms train over
the same area.

Convective intensity should begin to diminish late this evening,
though occasional rain and thunderstorms will continue through the
night as the upper level low swings through the area.

Rain will then end from northwest to southeast on Friday as the
front sweeps across. Temperatures tomorrow will be cooler, with
highs in the upper 60s and low 70s. Skies will gradually clear
through the day, eventually becoming clear by evening.

.LONG TERM...(Friday Night through Thursday)
Issued at 210 PM CDT Thu May 11 2017

Beautiful conditions are then expected on Saturday as high
pressure builds into the region. Temperatures will be right around
average with light winds and clear skies. Southerly winds will
start to kick in on Sunday, helping to boost temperatures back
to around 80. Warm weather is then expected through at least mid
week, as southerly flow dominates. Rain chances really don't look
to increase again until at least mid week, or perhaps later.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1227 PM CDT Thu May 11 2017

A frontal boundary will bring multiple rounds of showers and
thunderstorms to southern Missouri from late this afternoon into
early Friday morning. MVFR and brief IFR conditions can be
expected around storms. There will also be a threat for large hail
and gusty winds with storms late this afternoon and this evening.

Even outside of thunderstorms, ceilings will lower tonight as that
front pushes south. MVFR will become widespread with increasing
likelihood for IFR late tonight and early Friday morning.

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...Flash Flood Watch through late tonight for MOZ077-079>083-
     088>098-101>106.

KS...Flash Flood Watch through late tonight for KSZ097-101.

&&

SHORT TERM...Boxell
LONG TERM...Boxell
AVIATION...Schaumann

Hazardous weather outlook, May 11, 3:44 PM CDT, 2 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Springfield MO
344 PM CDT Thu May 11 2017

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-122045-
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-
344 PM CDT Thu May 11 2017

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Limited Tornado risk.
  Significant Hail risk.
  Elevated Thunderstorm wind damage risk.
  Elevated Flooding risk.
  Significant Lightning risk.

DISCUSSION...

 Strong to severe storms will continue to move through the area
this afternoon and evening. Locations south of US Highway 54 has
the highest chance of being impacted by these storms. The primary
risk will be large hail...potentially up to the size of baseballs.
Damaging wind gusts to 60 mph are also possible. An isolated
tornado will be possible if thunderstorms are able to interact
with any boundaries in the area.

 Locally heavy rainfall will be possible with widespread 1-2
likely. A few 3-4 inch amounts are possible. This could result in
flash flooding and a Flash Flood Watch is in effect for mainly
areas along and south of Interstate 44.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

 The chance of thunderstorms will return during the middle and
 later part of next week.

.SPOTTER INFORMATION STATEMENT...

 Spotter activation may be needed for the rest of the afternoon
and evening for most of Southeast Kansas and Southwest Missouri.

&&

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

Burchfield

In the hours before

Local storm report, May 11, 4:54 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
454 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0444 PM     HAIL             3 S REPUBLIC            37.08N 93.48W
05/11/2017  E1.00 INCH       CHRISTIAN          MO   TRAINED SPOTTER

&&

Local storm report, May 11, 5:07 PM CDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
507 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0427 PM     TSTM WND DMG     4 ESE MARIONVILLE       36.98N 93.57W
05/11/2017                   STONE              MO   AMATEUR RADIO

            TREES DOWN ON HWY M NEAR HWY 413.

&&

Local storm report, May 11, 5:20 PM CDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
520 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0425 PM     TSTM WND DMG     MARIONVILLE             37.00N 93.63W
05/11/2017                   LAWRENCE           MO   PUBLIC

            LARGE TREE DOWN IN MARIONVILLE. PICTURE WAS
            FROM SOCIAL MEDIA.

&&

MG

Local storm report, May 11, 5:45 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
545 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     TSTM WND DMG     3 N BOAZ                37.06N 93.41W
05/11/2017                   CHRISTIAN          MO   AMATEUR RADIO

            SEVERAL 3-6 INCH LIMBS DOWN PLUS ONE 12-14
            INCH LIMB DOWN ON HOLDER RD EAST OF HWY ZZ.

&&

DSA

Local storm report, May 11, 6:32 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
632 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     TSTM WND DMG     1 NE AURORA             36.98N 93.71W
05/11/2017                   LAWRENCE           MO   BROADCAST MEDIA

            BLEACHES AT BALDWIN PARK IN AURORA WERE
            BLOWN OVER. TIME WAS ESTIMATED BY RADAR.

&&

MG

Local storm report, May 11, 6:38 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
638 PM CDT THU MAY 11 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     FLASH FLOOD      2 N BOAZ                37.05N 93.40W
05/11/2017                   CHRISTIAN          MO   AMATEUR RADIO

            LOW WATER CROSSINGAT KERR RD AND HOLDER RD
            CHRISTIAN COUNTY...INUNDATED BY FLASH
            FLOOD...14 INCHES OF WATER AND RISING
            RAPIDLY...ONE VEHICLE STALLED IN WATER AND
            WAS PULLED OUT BY REPORTING MOBILE INTERCEPT
            SPOTTER.

&&

DSA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 12:09 AM CDT	Special Weather Statement	SGF	Greene	51 min
May 11, 12:19 AM CDT	Severe Thunderstorm Warning	SGF	McDonald	56 min
May 11, 12:22 AM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	53 min
May 11, 12:33 AM CDT	Special Weather Statement	SGF	Dallas	42 min
May 11, 1:05 AM CDT	Special Weather Statement	SGF	Barry, Dade, Lawrence	40 min
May 11, 8:53 AM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	28 min
May 11, 9:32 AM CDT	Special Weather Statement	SGF	Newton	43 min
May 11, 10:11 AM CDT	Special Weather Statement	SGF	Newton	49 min
May 11, 10:17 AM CDT	Severe Thunderstorm Warning	SGF	Newton	28 min
May 11, 10:46 AM CDT	Flash Flood Watch	SGF	Barry, Barton, Christian, Dade, Dallas, Dent and 17 more	13 hr
May 11, 11:06 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Christian, Lawrence, Stone	39 min
May 11, 12:13 PM CDT	Special Weather Statement	SGF	Christian	32 min
May 11, 12:19 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	26 min
May 11, 2:14 PM CDT	Severe Thunderstorm Warning	SGF	Newton	46 min
May 11, 2:57 PM CDT	Severe Thunderstorm Warning	SGF	Newton	21 min
May 11, 3:06 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	24 min
May 11, 3:08 PM CDT	Severe Thunderstorm Warning	SGF	Taney	52 min
May 11, 3:09 PM CDT	Flash Flood Warning	SGF	Newton	6 hr
May 11, 3:28 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	47 min
May 11, 3:31 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, Newton	44 min
May 11, 3:54 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Taney	51 min
May 11, 3:58 PM CDT	Flash Flood Warning	SGF	Barry, Lawrence	6 hr
May 11, 4:11 PM CDT	Tornado Warning	SGF	Christian, Greene, Lawrence	49 min
May 11, 4:26 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Webster, Wright	45 min
May 11, 4:27 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene, Stone	63 min
May 11, 4:30 PM CDT	Tornado Warning	SGF	Christian, Greene, Stone	32 min
May 11, 4:38 PM CDT	Severe Thunderstorm Warning	SGF	Oregon	52 min
May 11, 5:21 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Greene, Webster, Wright	54 min
May 11, 5:41 PM CDT	Areal Flood Advisory	SGF	Christian, Greene, Stone	3 hr
May 11, 6:09 PM CDT	Severe Thunderstorm Warning	SGF	Texas	41 min
May 11, 6:20 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Oregon	55 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2017 Every severe thunderstorm warning 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.