Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 49, NWS Springfield, MO

March 17, 2012Maries County, Phelps County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Mar 17, 2012, 4:42 PM CDT for Maries County, Phelps County, Missouri. It was in force for 48 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: Mar 17, 2012, 4:42 PM CDT (21:42 UTC)
Expired: Mar 17, 2012, 5:30 PM CDT
In force: 48 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Maries County, MO, Phelps County, MO

The radar

The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 21:41 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
Mar 17, 5:10 PM CDT	HAIL 1	8 Nw Rolla, MO	MIXED HAIL SIZES RANGING FROM DIMES TO THE SIZE OF QUARTERS.

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

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.7 hours before the alert went out and 226 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: 1549 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 83 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.

071 
WUUS53 KSGF 172142
SVRSGF
MOC125-161-172230-
/O.NEW.KSGF.SV.W.0049.120317T2142Z-120317T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
442 PM CDT SAT MAR 17 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PHELPS COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHERN MARIES COUNTY IN CENTRAL MISSOURI...

* UNTIL 530 PM CDT.

* AT 440 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES WEST OF VICHY...OR 14 MILES NORTHWEST
  OF ROLLA...MOVING EAST AT 35 MPH. THIS STORM IS CAPABLE OF
  PRODUCING HALF DOLLAR SIZE HAIL.

* LOCATIONS IMPACTED INCLUDE ROSATI...ST. JAMES AND VICHY.

INTERSTATE 44 BETWEEN MILE MARKERS 186 AND 199 WILL ALSO BE IMPACTED
BY THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3798 9200 3816 9207 3825 9164 3816 9164
      3816 9153 3815 9151 3800 9152
TIME...MOT...LOC 2142Z 258DEG 30KT 3806 9196
WIND...HAIL <50MPH 1.25IN

$$

WISE

1 follow-up statement

032 
WWUS53 KSGF 172212
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
512 PM CDT SAT MAR 17 2012

MOC125-161-172230-
/O.CON.KSGF.SV.W.0049.000000T0000Z-120317T2230Z/
MARIES MO-PHELPS MO-
512 PM CDT SAT MAR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHEASTERN PHELPS AND CENTRAL MARIES COUNTIES...

...A SEVERE THUNDERSTORM WARNING ALSO REMAINS IN EFFECT UNTIL 530 PM 
CDT FOR SOUTHEASTERN MILLER AND WESTERN MARIES COUNTIES...

AT 508 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF VICHY...OR 7
MILES NORTH OF ROLLA...MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE
OF PRODUCING QUARTER SIZE HAIL.

LOCATIONS IMPACTED INCLUDE ROSATI AND VICHY.

INTERSTATE 44 BETWEEN MILE MARKERS 186 AND 199 WILL ALSO BE IMPACTED
BY THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3798 9191 3806 9189 3818 9165 3818 9164
      3816 9164 3816 9153 3815 9151 3800 9152
TIME...MOT...LOC 2212Z 260DEG 17KT 3805 9178
WIND...HAIL <50MPH 1.00IN

$$

WISE

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 9:31 AM CDT	Special Weather Statement	SGF	Hickory	44 min
Mar 17, 9:44 AM CDT	Special Weather Statement	SGF	Morgan	46 min
Mar 17, 10:01 AM CDT	Special Weather Statement	SGF	Camden	29 min
Mar 17, 10:27 AM CDT	Special Weather Statement	SGF	Morgan	18 min
Mar 17, 11:05 AM CDT	Special Weather Statement	SGF	Miller	25 min
Mar 17, 11:13 AM CDT	Special Weather Statement	SGF	Douglas	32 min
Mar 17, 11:29 AM CDT	Special Weather Statement	SGF	Pulaski	31 min
Mar 17, 11:43 AM CDT	Special Weather Statement	SGF	Texas	32 min
Mar 17, 11:52 AM CDT	Special Weather Statement	SGF	Maries	38 min
Mar 17, 11:56 AM CDT	Severe Thunderstorm Warning	SGF	Maries, Phelps, Pulaski	34 min
Mar 17, 12:54 PM CDT	Special Weather Statement	SGF	Camden	36 min
Mar 17, 1:06 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Miller, Morgan	24 min
Mar 17, 2:36 PM CDT	Special Weather Statement	SGF	Miller	24 min
Mar 17, 3:03 PM CDT	Special Weather Statement	SGF	Miller	27 min
Mar 17, 3:05 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Miller	25 min
Mar 17, 3:29 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Miller	31 min
Mar 17, 4:12 PM CDT	Special Weather Statement	SGF	Maries, Miller	63 min
Mar 17, 5:00 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Miller	30 min
Mar 17, 5:17 PM CDT	Special Weather Statement	SGF	Miller	28 min
Mar 17, 5:25 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Miller	50 min
Mar 17, 6:17 PM CDT	Areal Flood Advisory	SGF	Maries, Miller, Phelps	6 hr
Mar 17, 6:20 PM CDT	Special Weather Statement	SGF	Maries	55 min
Mar 17, 6:42 PM CDT	Flash Flood Warning	SGF	Maries, Miller	5 hr
Mar 17, 6:49 PM CDT	Severe Thunderstorm Warning	SGF	Maries	41 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Every severe thunderstorm warning in 2012

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.