Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 15, NWS Springfield, MO

March 17, 2021Christian County, Stone County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Mar 17, 2021, 6:25 PM CDT for Christian County, Stone County, Missouri. It was in force for 50 min. 6 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, 2021, 6:25 PM CDT (23:25 UTC)
Expired: Mar 17, 2021, 7:15 PM CDT
In force: 50 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

Counties Christian County, MO, Stone County, MO

The radar

The Springfield radar (KSGF), 32 km from the middle of the area, began a volume at 23:28 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, 6:27 PM CDT	TSTM WND DMG	1 Nnw Elsey, MO	MANY TREES REPORTED DOWN NEAR THE INTERSECTION OF HIGHWAY 413 AND WHEELER BRANCH ROAD.
Mar 17, 6:37 PM CDT	TSTM WND DMG	Elsey, MO	TREES WERE REPORTED DOWN AND ROAD BLOCKED ON HIGHWAY 413.
Mar 17, 6:37 PM CDT	TORNADO	Elsey, MO	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM ELSEY. TREES WERE REPORTED DOWN AND ROAD BLOCKED ON HIGHWAY 413. SPOTTER CONFIRMED TORNADO ON THE GROUND. DAMAGE REPORTED TO HOMES JUST WEST OF TOWN. A TORNADO DEBRIS SIGNATURE WAS PRESENT WITH THIS STORM.
Mar 17, 6:42 PM CDT	TSTM WND DMG	5 S Boaz, MO	SEVERAL LARGE TREES WERE REPORTED DOWN BLOCKING HIGHWAY U NEAR LAKE BRANCH ROAD.
Mar 17, 6:53 PM CDT	TSTM WND GST 70	5 Sse Boaz, MO	WINDS WERE ESTIMATED AT 65-70MPH ALONG WITH NICKLE SIZED HAIL.
Mar 17, 6:56 PM CDT	HAIL 1	2 N Boaz, MO	QUARTER SIZED HAIL REPORTED VIA MPING.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 17, 2:00 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.4 hours before the alert went out and 27 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: 102 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

882 
WUUS53 KSGF 172325
SVRSGF
MOC043-209-180015-
/O.NEW.KSGF.SV.W.0015.210317T2325Z-210318T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
625 PM CDT Wed Mar 17 2021

The National Weather Service in Springfield has issued a

* Severe Thunderstorm Warning for...
  Northwestern Christian County in southwestern Missouri...
  Northern Stone County in southwestern Missouri...

* Until 715 PM CDT.

* At 625 PM CDT, a severe thunderstorm was located over Crane, or 9
  miles southeast of Aurora, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Clever...                         Crane...
  Billings...                       Hurley...
  Boaz...                           

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for southwestern
Missouri.

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

&&

LAT...LON 3688 9361 3702 9361 3710 9355 3709 9334
      3693 9334 3685 9351
TIME...MOT...LOC 2325Z 213DEG 26KT 3690 9358 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

Wise

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 2:19 AM CDT	Flash Flood Watch	SGF	Barton, Benton, Camden, Cedar, Christian, Dade and 23 more	19 hr
Mar 17, 2:20 AM CDT	Special Weather Statement	SGF	Laclede	25 min
Mar 17, 4:22 AM CDT	Special Weather Statement	SGF	Benton	23 min
Mar 17, 5:16 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Cedar, Vernon	29 min
Mar 17, 5:33 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper, Newton	57 min
Mar 17, 7:43 AM CDT	Special Weather Statement	SGF	Dallas	32 min
Mar 17, 10:02 AM CDT	Areal Flood Advisory	SGF	Greene, Webster	4 hr
Mar 17, 3:27 PM CDT	Special Weather Statement	SGF	McDonald	33 min
Mar 17, 3:35 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	40 min
Mar 17, 4:10 PM CDT	Severe Thunderstorm Warning	SGF	Barry, McDonald, Newton	50 min
Mar 17, 4:30 PM CDT	Special Weather Statement	SGF	McDonald	30 min
Mar 17, 4:40 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	50 min
Mar 17, 4:53 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Jasper, Lawrence, Newton	52 min
Mar 17, 4:55 PM CDT	Severe Thunderstorm Warning	SGF	Barry	50 min
Mar 17, 5:10 PM CDT	Flash Flood Warning	SGF	McDonald, Newton	4 hr
Mar 17, 5:10 PM CDT	Severe Thunderstorm Warning	SGF	Barry, McDonald, Newton	35 min
Mar 17, 5:12 PM CDT	Tornado Warning	SGF	Barry	33 min
Mar 17, 5:32 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence	43 min
Mar 17, 5:33 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Stone	57 min
Mar 17, 5:33 PM CDT	Tornado Warning	SGF	Barry, Lawrence	27 min
Mar 17, 5:38 PM CDT	Tornado Warning	SGF	Barry	37 min
Mar 17, 5:55 PM CDT	Flash Flood Warning	SGF	Barry, Lawrence, Newton	4 hr
Mar 17, 6:01 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Dade, Greene, Lawrence	44 min
Mar 17, 6:13 PM CDT	Tornado Warning	SGF	Barry, Stone	17 min
Mar 17, 6:20 PM CDT	Tornado Warning Tornado observed	SGF	Barry, Stone	25 min
Mar 17, 6:37 PM CDT	Tornado Warning	SGF	Stone	23 min
Mar 17, 6:39 PM CDT	Special Weather Statement	SGF	Greene	51 min
Mar 17, 6:48 PM CDT	Severe Thunderstorm Warning	SGF	Christian	57 min
Mar 17, 6:50 PM CDT	Flash Flood Warning	SGF	Barry, Jasper, Lawrence, Stone	4 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Every severe thunderstorm warning in 2021

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.