Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Springfield, MO

March 17, 2012Maries County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Mar 17, 2012, 6:49 PM CDT for Maries County, Missouri. It was in force for 41 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: Mar 17, 2012, 6:49 PM CDT (23:49 UTC)
Expired: Mar 17, 2012, 7:30 PM CDT
In force: 41 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Maries County, MO

The radar

The St Louis radar (KLSX), 106 km from the middle of the area, began a volume at 23:52 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, 7:13 PM CDT	HAIL 0.5	2 Nnw Vichy, MO	LOTS OF PEA AND DIME SIZE HAIL
Mar 17, 7:20 PM CDT	HAIL 1.75	10 N Rolla, MO

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, 11.8 hours before the alert went out and 234 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.

253 
WUUS53 KSGF 172349
SVRSGF
MOC125-180030-
/O.NEW.KSGF.SV.W.0052.120317T2349Z-120318T0030Z/

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

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MARIES COUNTY IN CENTRAL MISSOURI...

* UNTIL 730 PM CDT.

* AT 647 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHEAST OF VIENNA...OR 15 MILES NORTH
  OF ROLLA...MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE OF
  PRODUCING QUARTER SIZE HAIL.

* LOCATIONS IMPACTED INCLUDE VICHY AND VIENNA.

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 3829 9163 3810 9163 3808 9166 3807 9192
      3820 9196 3830 9169 3830 9165
TIME...MOT...LOC 2349Z 248DEG 18KT 3816 9186
WIND...HAIL <50MPH 1.00IN

$$

WISE

2 follow-up statements

760 
WWUS53 KSGF 172354
SVSSGF

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

MOC125-180030-
/O.CON.KSGF.SV.W.0052.000000T0000Z-120318T0030Z/
MARIES MO-
654 PM CDT SAT MAR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EASTERN MARIES COUNTY...

AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF VICHY...OR 15
MILES NORTH OF ROLLA...MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE
OF PRODUCING HALF DOLLAR SIZE HAIL.

LOCATIONS IMPACTED INCLUDE BELLE AND VICHY.

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 3829 9163 3810 9163 3808 9166 3807 9190
      3821 9193 3830 9169 3830 9165
TIME...MOT...LOC 2354Z 248DEG 18KT 3817 9183
WIND...HAIL <50MPH 1.25IN

$$

WISE

641 
WWUS53 KSGF 180011
SVSSGF

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

MOC125-180030-
/O.CON.KSGF.SV.W.0052.000000T0000Z-120318T0030Z/
MARIES MO-
711 PM CDT SAT MAR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EASTERN MARIES COUNTY...

AT 705 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR VICHY...OR 13 MILES NORTH OF
ROLLA...MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING
HALF DOLLAR SIZE HAIL.

LOCATIONS IMPACTED INCLUDE BELLE AND VICHY.

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 3829 9163 3810 9163 3808 9166 3807 9190
      3821 9193 3830 9169 3830 9165
TIME...MOT...LOC 0011Z 271DEG 18KT 3814 9174
WIND...HAIL <50MPH 1.25IN

$$

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, 4:42 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Phelps	48 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

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.