Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 421, NWS Springfield, MO

July 30, 2011Phelps County, Pulaski County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 30, 2011, 2:52 PM CDT for Phelps County, Pulaski County, Missouri. It was in force for 38 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
Jul 30, 2011, 2:52 PM CDT (19:52 UTC)
Expired
Jul 30, 2011, 3:30 PM CDT
In force
38 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
0.5 in
Wind
60.0 mph

Counties Phelps County, MO, Pulaski County, MO

The radar

The Springfield radar (KSGF), 145 km from the middle of the area, began a volume at 19:53 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, 7.9 hours before the alert went out and 195 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 2011-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2029 joules per kilogram.LCLLFCEL10008507005003002001001 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 2011-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
2029 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1301 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

387 
WUUS53 KSGF 301952
SVRSGF
MOC161-169-302030-
/O.NEW.KSGF.SV.W.0421.110730T1952Z-110730T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
252 PM CDT SAT JUL 30 2011

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PULASKI COUNTY IN CENTRAL MISSOURI...
  SOUTHWESTERN PHELPS COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 330 PM CDT.

* AT 246 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF DIXON...OR 7 MILES
  NORTHEAST OF WAYNESVILLE...MOVING SOUTHEAST AT 10 MPH. THIS STORM
  IS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.

* LOCATIONS IMPACTED INCLUDE CROCKER...DEVIL'S ELBOW...DIXON...
  DOOLITTLE...EDGAR SPRINGS...JEROME...NEWBURG...NORTHEASTERN FORT
  LEONARD WOOD...ST. ROBERT AND WAYNESVILLE.

INTERSTATE 44 BETWEEN MILE MARKERS 155 AND 183 WILL ALSO BE IMPACTED
BY THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM CAPABLE OF PRODUCING LARGE HAIL AND
DAMAGING WINDS...IF YOU ARE IN ITS PATH SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 3779 9179 3779 9181 3760 9181 3787 9234
      3802 9224 3801 9203 3793 9178
TIME...MOT...LOC 1952Z 293DEG 9KT 3792 9213
WIND...HAIL 60MPH <.50IN

$$
DSA
2 follow-up statements
084 
WWUS53 KSGF 302017
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
317 PM CDT SAT JUL 30 2011

MOC161-169-302030-
/O.CON.KSGF.SV.W.0421.000000T0000Z-110730T2030Z/
PHELPS MO-PULASKI MO-
317 PM CDT SAT JUL 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR NORTHERN PULASKI AND SOUTHWESTERN PHELPS COUNTIES...

AT 308 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A CLUSTER OF STRONG TO SEVERE THUNDERSTORMS EXTENDING FROM 
FROM JUST SOUTH OF DIXON TO THE EDGAR SPRINGS AREA. THESE STORMS ARE 
MOVING SOUTHEAST AT 10 MPH. THESE STORMS ARE CAPABLE OF PRODUCING 
LOCALLY DAMAGING WINDS IN EXCESS OF 60 MPH.

LOCATIONS IMPACTED INCLUDE CROCKER...DEVIL'S ELBOW...DIXON...
DOOLITTLE...EDGAR SPRINGS...JEROME...NEWBURG...NORTHEASTERN FORT
LEONARD WOOD...ST. ROBERT AND WAYNESVILLE.

INTERSTATE 44 BETWEEN MILE MARKERS 155 AND 183 WILL ALSO BE IMPACTED
BY THIS STORM.

LAT...LON 3779 9179 3779 9181 3760 9181 3787 9234
      3802 9224 3801 9203 3793 9178
TIME...MOT...LOC 2013Z 293DEG 9KT 3790 9207
WIND...HAIL 60MPH <.50IN

$$
DSA
833 
WWUS53 KSGF 302023
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
323 PM CDT SAT JUL 30 2011

MOC161-169-302033-
/O.EXP.KSGF.SV.W.0421.000000T0000Z-110730T2030Z/
PHELPS MO-PULASKI MO-
323 PM CDT SAT JUL 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PULASKI AND
SOUTHWESTERN PHELPS COUNTIES WILL EXPIRE AT 330 PM CDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3779 9179 3779 9181 3760 9181 3787 9234
      3802 9224 3801 9203 3793 9178
TIME...MOT...LOC 2023Z 293DEG 9KT 3789 9204

$$

DSA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 4:17 AM CDTExcessive Heat WarningSGFBarry, Barton, Benton, Camden, Cedar, Christian and 28 more9 days
Jul 30, 1:13 PM CDTSpecial Weather StatementSGFMaries47 min
Jul 30, 1:18 PM CDTSpecial Weather StatementSGFMaries42 min
Jul 30, 1:30 PM CDTSpecial Weather StatementSGFLaclede45 min
Jul 30, 1:37 PM CDTSevere Thunderstorm WarningSGFLaclede, Pulaski38 min
Jul 30, 1:57 PM CDTSpecial Weather StatementSGFWebster48 min
Jul 30, 2:16 PM CDTSevere Thunderstorm WarningSGFPhelps, Pulaski31 min
Jul 30, 2:59 PM CDTSpecial Weather StatementSGFDent46 min
Jul 30, 3:04 PM CDTSevere Thunderstorm WarningSGFDent, Shannon, Texas41 min
Jul 30, 3:30 PM CDTSpecial Weather StatementSGFDent30 min
Jul 30, 4:18 PM CDTSpecial Weather StatementSGFShannon27 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2011Every severe thunderstorm warning in 2011

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.