Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 310, NWS Springfield, MO

August 5, 2017Dallas County, Webster County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Aug 5, 2017, 12:23 PM CDT for Dallas County, Webster County, Missouri. It was in force for 54 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
Aug 5, 2017, 12:23 PM CDT (17:23 UTC)
Expired
Aug 5, 2017, 1:17 PM CDT
In force
54 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dallas County, MO, Webster County, MO

The radar

The Springfield radar (KSGF), 42 km from the middle of the area, began a volume at 17:25 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 nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 5.4 hours before the alert went out and 89 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2017-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2017-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1677 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
274 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

453 
WUUS53 KSGF 051723
SVRSGF
MOC059-225-051830-
/O.NEW.KSGF.SV.W.0310.170805T1723Z-170805T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
1223 PM CDT SAT AUG 5 2017

The National Weather Service in Springfield has issued a

* Severe Thunderstorm Warning for...
  Webster County in southwestern Missouri...
  Southern Dallas County in southwestern Missouri...

* Until 130 PM CDT

* At 1222 PM CDT, severe thunderstorms were located along a line
  extending from 7 miles east of Bolivar to near Fair Grove to near
  Springfield to near Battlefield, moving east at 40 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Marshfield...                     Rogersville...
  Seymour...                        Fordland...
  Conway...                         Niangua...
  Duncan...                         Diggins...
  Elkland...                        March...
  Northview...                      Olive...
  Rader...                          Foose...
  Charity...                        

This includes Interstate 44 between mile markers 91 and 111.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3707 9290 3708 9290 3709 9306 3742 9308
      3742 9319 3758 9318 3755 9285 3748 9285
      3748 9269 3707 9269
TIME...MOT...LOC 1722Z 286DEG 36KT 3760 9327 3739 9324 3726 9327 3715
9341

HAIL...0.75IN
WIND...60MPH
 
$$

Cramer
2 follow-up statements
363 
WWUS53 KSGF 051752
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
1252 PM CDT SAT AUG 5 2017

MOC059-051801-
/O.CAN.KSGF.SV.W.0310.000000T0000Z-170805T1830Z/
Dallas MO-
1252 PM CDT SAT AUG 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DALLAS COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3707 9290 3708 9290 3709 9306 3728 9306
      3741 9300 3749 9298 3748 9269 3707 9269
TIME...MOT...LOC 1751Z 284DEG 38KT 3752 9291 3731 9288 3718 9291 3707
9305

$$

MOC225-051830-
/O.CON.KSGF.SV.W.0310.000000T0000Z-170805T1830Z/
Webster MO-
1252 PM CDT SAT AUG 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR WEBSTER COUNTY...

At 1251 PM CDT, severe thunderstorms were located along a line
extending from near Conway to near Marshfield to near Fordland to
near Rogersville, moving east at 45 mph.

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

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Marshfield...                     Rogersville...
Seymour...                        Fordland...
Niangua...                        Duncan...
Diggins...                        Rader...
Northview...                      

This includes Interstate 44 between mile markers 91 and 109.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3707 9290 3708 9290 3709 9306 3728 9306
      3741 9300 3749 9298 3748 9269 3707 9269
TIME...MOT...LOC 1751Z 284DEG 38KT 3752 9291 3731 9288 3718 9291 3707
9305

HAIL...0.75IN
WIND...60MPH
 
$$

Cramer
865 
WWUS53 KSGF 051817
SVSSGF

Severe Weather Statement
National Weather Service Springfield MO
117 PM CDT SAT AUG 5 2017

MOC225-051826-
/O.CAN.KSGF.SV.W.0310.000000T0000Z-170805T1830Z/
Webster MO-
117 PM CDT SAT AUG 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR WEBSTER COUNTY IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.  However heavy rain is
still possible with these thunderstorms.

LAT...LON 3707 9290 3708 9290 3709 9306 3728 9306
      3741 9300 3749 9298 3748 9269 3707 9269
TIME...MOT...LOC 1816Z 286DEG 36KT 3745 9261 3724 9258 3711 9261 3700
9275

$$

Cramer

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 10:24 AM CDTFlash Flood WarningSGFBarton, Vernon8 hr
Aug 5, 11:45 AM CDTFlash Flood WarningSGFBarton, Cedar, Dade, Polk8 hr
Aug 5, 11:52 AM CDTSevere Thunderstorm WarningSGFGreene, Polk53 min
Aug 5, 1:32 PM CDTFlash Flood WarningSGFGreene6 hr
Aug 5, 5:30 PM CDTAreal Flood WarningSGFBenton, Camden, Hickory, Laclede, Miller, Morgan6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2017Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.