Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS Springfield, MO
NWS Springfield, MO issued this severe thunderstorm warning at Aug 20, 2021, 5:29 PM CDT for Dade County, Greene County, Missouri. It was in force for 46 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
- Aug 20, 2021, 5:29 PM CDT (22:29 UTC)
- Expired
- Aug 20, 2021, 6:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Springfield, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Dade County, MO, Greene County, MO
The radar
The Springfield radar (KSGF), 22 km from the middle of the area, began a volume at 22:29 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 |
|---|---|---|---|
| Aug 20, 5:45 PM CDT | TSTM WND DMG | 3 E Everton, MO | SEVERE THUNDERSTORM WIND GUSTS SNAPPED SOME TREE LIMBS OFF. |
| Aug 20, 5:45 PM CDT | NON-TSTM WND DMG | 3 E Everton, MO | SEVERE THUNDERSTORM WIND GUSTS SNAPPED OFF SOME TREE LIMBS. |
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, 10.5 hours before the alert went out and 51 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
- 1172 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
625
WUUS53 KSGF 202229
SVRSGF
MOC057-077-202315-
/O.NEW.KSGF.SV.W.0124.210820T2229Z-210820T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Springfield MO
529 PM CDT Fri Aug 20 2021
The National Weather Service in Springfield has issued a
* Severe Thunderstorm Warning for...
Northwestern Greene County in southwestern Missouri...
Southeastern Dade County in southwestern Missouri...
* Until 615 PM CDT.
* At 528 PM CDT, a severe thunderstorm was located over Everton, or
6 miles west of Ash Grove, moving northeast at 20 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...
Willard... Ash Grove...
Walnut Grove... Everton...
Sacville... Cave Springs...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3728 9376 3733 9380 3743 9361 3742 9331
3731 9344 3728 9360
TIME...MOT...LOC 2228Z 239DEG 15KT 3732 9370
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cramer2 follow-up statements
388
WWUS53 KSGF 202251
SVSSGF
Severe Weather Statement
National Weather Service Springfield MO
551 PM CDT Fri Aug 20 2021
MOC057-077-202315-
/O.CON.KSGF.SV.W.0124.000000T0000Z-210820T2315Z/
Greene MO-Dade MO-
551 PM CDT Fri Aug 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHWESTERN GREENE AND SOUTHEASTERN DADE COUNTIES...
At 550 PM CDT, a severe thunderstorm was located 3 miles northwest
of Ash Grove, or 5 miles southwest of Walnut Grove, moving northeast
at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Willard... Ash Grove...
Walnut Grove... Everton...
Sacville... Cave Springs...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3729 9369 3736 9371 3743 9361 3742 9331
3731 9344 3728 9360
TIME...MOT...LOC 2250Z 241DEG 12KT 3735 9362
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cramer384
WWUS53 KSGF 202313
SVSSGF
Severe Weather Statement
National Weather Service Springfield MO
613 PM CDT Fri Aug 20 2021
MOC057-077-202322-
/O.EXP.KSGF.SV.W.0124.000000T0000Z-210820T2315Z/
Greene MO-Dade MO-
613 PM CDT Fri Aug 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GREENE AND
SOUTHEASTERN DADE COUNTIES WILL EXPIRE AT 615 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 3729 9369 3736 9371 3743 9361 3742 9331
3731 9344 3728 9360
TIME...MOT...LOC 2312Z 239DEG 15KT 3739 9353
$$
CramerNearby
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.