Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 18, NWS Springfield, MO
NWS Springfield, MO issued this severe thunderstorm warning at Mar 17, 2021, 7:24 PM CDT for Douglas County, Webster County, Wright County, Missouri. It was in force for 66 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, 2021, 7:24 PM CDT (00:24 UTC)
- Expired
- Mar 17, 2021, 8:30 PM CDT
- In force
- 66 min
- Issued by
- NWS Springfield, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Douglas County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 59 km from the middle of the area, began a volume at 00:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 17, 7:58 PM CDT | HAIL 1 | Seymour, MO | REPORT OF QUARTER SIZED HAIL. |
| Mar 17, 8:35 PM CDT | HAIL 0.88 | 5 S Grovespring, MO |
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 00:00Z, 0.4 hours before the alert went out and 96 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.
- Mixed-layer CAPE
- 283 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 305 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.3
The text
As transmitted.
399
WUUS53 KSGF 180024
SVRSGF
MOC067-225-229-180130-
/O.NEW.KSGF.SV.W.0018.210318T0024Z-210318T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
724 PM CDT Wed Mar 17 2021
The National Weather Service in Springfield has issued a
* Severe Thunderstorm Warning for...
Southeastern Webster County in southwestern Missouri...
Douglas County in southwestern Missouri...
Wright County in southwestern Missouri...
* Until 830 PM CDT.
* At 724 PM CDT, severe thunderstorms were located along a line
extending from near Strafford to 10 miles northeast of Taneyville,
moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Mountain Grove... Ava...
Seymour... Mansfield...
Dawson... Norwood...
Hartville... Duncan...
Diggins... Manes...
Brushyknob... Graff...
Gentryville... Rome...
Vanzant... Squires...
Goodhope... Drury...
Dogwood... Odin...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 900 PM CDT for southwestern
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3706 9290 3707 9291 3708 9290 3709 9293
3731 9289 3737 9268 3746 9226 3684 9225
3681 9290
TIME...MOT...LOC 0024Z 248DEG 30KT 3722 9311 3686 9292
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Wise2 follow-up statements
810
WWUS53 KSGF 180115
SVSSGF
Severe Weather Statement
National Weather Service Springfield MO
815 PM CDT Wed Mar 17 2021
MOC225-180120-
/O.CAN.KSGF.SV.W.0018.000000T0000Z-210318T0130Z/
Webster MO-
815 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WEBSTER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for southwestern
Missouri.
LAT...LON 3703 9270 3707 9268 3726 9268 3727 9270
3729 9270 3729 9269 3737 9269 3746 9226
3684 9225 3682 9271
TIME...MOT...LOC 0110Z 254DEG 24KT 3732 9270 3693 9260
$$
MOC067-229-180130-
/O.CON.KSGF.SV.W.0018.000000T0000Z-210318T0130Z/
Douglas MO-Wright MO-
815 PM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR CENTRAL DOUGLAS AND WRIGHT COUNTIES...
At 810 PM CDT, severe thunderstorms were located along a line
extending from 8 miles southeast of Niangua to near Ava, moving east
at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Emergency management. Quarter size hail was reported in
Seymour.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mountain Grove... Ava...
Mansfield... Dawson...
Norwood... Hartville...
Duncan... Manes...
Brushyknob... Graff...
Gentryville... Vanzant...
Squires... Drury...
Odin...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 900 PM CDT for southwestern
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3703 9270 3707 9268 3726 9268 3727 9270
3729 9270 3729 9269 3737 9269 3746 9226
3684 9225 3682 9271
TIME...MOT...LOC 0110Z 254DEG 24KT 3732 9270 3693 9260
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Wise126
WWUS53 KSGF 180127
SVSSGF
Severe Weather Statement
National Weather Service Springfield MO
827 PM CDT Wed Mar 17 2021
MOC067-229-180137-
/O.EXP.KSGF.SV.W.0018.000000T0000Z-210318T0130Z/
Douglas MO-Wright MO-
827 PM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL DOUGLAS AND WRIGHT
COUNTIES WILL EXPIRE AT 830 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 900 PM CDT for southwestern
Missouri.
LAT...LON 3703 9270 3707 9268 3726 9268 3727 9270
3729 9270 3729 9269 3737 9269 3746 9226
3684 9225 3682 9271
TIME...MOT...LOC 0127Z 248DEG 30KT 3737 9255 3698 9246
$$
WiseThe office that day
Everything else NWS Springfield, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:06 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Greene, Webster | 54 min |
| Mar 17, 7:29 PM CDT | Flash Flood Warning | SGF | Barry, Christian, Dade, Greene, Lawrence, Polk and 2 more | 4 hr |
| Mar 17, 7:43 PM CDT | Tornado Warning | SGF | Douglas | 32 min |
| Mar 17, 8:36 PM CDT | Special Weather Statement | SGF | Laclede, Wright | 39 min |
| Mar 17, 9:27 PM CDT | Areal Flood Warning | SGF | McDonald, Newton | 8 hr |
| Mar 17, 10:01 PM CDT | Areal Flood Warning | SGF | Lawrence, Newton | 8 hr |
| Mar 17, 11:19 PM CDT | Areal Flood Warning | SGF | Barry, Lawrence, Stone | 7 hr |
| Mar 17, 11:21 PM CDT | Areal Flood Warning | SGF | Barry, Christian, Dade, Greene, Lawrence, Polk and 2 more | 8 hr |
| Mar 17, 11:28 PM CDT | Areal Flood Warning | SGF | Benton, Cedar, Hickory, St. Clair | 8 hr |
| Mar 18, 12:34 AM CDT | River Flood Warning | SGF | Cedar | 47 hr |
| Mar 18, 9:45 AM CDT | River Flood Warning | SGF | Jasper | 37 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2021Every 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.