Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 55, NWS Paducah, KY

June 30, 2021Bollinger County, Missouri

NWS Paducah, KY issued this severe thunderstorm warning at Jun 30, 2021, 6:39 PM CDT for Bollinger County, Missouri. It was in force for 21 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: Jun 30, 2021, 6:39 PM CDT (23:39 UTC)
Expired: Jun 30, 2021, 7:00 PM CDT
In force: 21 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Bollinger County, MO

The radar

The Paducah radar (KPAH), 118 km from the middle of the area, began a volume at 23:41 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
Jun 30, 6:45 PM CDT	TSTM WND DMG	6 Nnw Glenallen, MO	COUNTY ROAD 840 NEAR HIGHWAY OO. SEVERAL LARGE TREES DOWN, SOME BLOCKING THE ROADWAY.
Jun 30, 6:53 PM CDT	TSTM WND DMG	2 Ssw Patton, MO	TREE FELL ON A HOUSE AND ALSO KNOCKED DOWN POWER LINES NEAR PATTON. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.7 hours before the alert went out and 289 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: 72 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

410 
WUUS53 KPAH 302339
SVRPAH
MOC017-010030-
/O.NEW.KPAH.SV.W.0055.210630T2339Z-210701T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Paducah KY
639 PM CDT Wed Jun 30 2021

The National Weather Service in Paducah has issued a

* Severe Thunderstorm Warning for...
  Northern Bollinger County in southeastern Missouri...

* Until 730 PM CDT.

* At 638 PM CDT, a severe thunderstorm was located near Patton, or 8
  miles northwest of Marble Hill, 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.

* This severe thunderstorm will remain over mainly rural areas of
  northeastern Bollinger County, including the following locations...
  Sedgewickville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3744 9014 3756 8986 3737 8986 3732 9011
TIME...MOT...LOC 2338Z 242DEG 11KT 3739 9009 

HAIL...1.00IN
WIND...60MPH
 
$$

GREG

1 follow-up statement

713 
WWUS53 KPAH 010000
SVSPAH

Severe Weather Statement
National Weather Service Paducah KY
700 PM CDT Wed Jun 30 2021

MOC017-010010-
/O.CAN.KPAH.SV.W.0055.000000T0000Z-210701T0030Z/
Bollinger MO-
700 PM CDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BOLLINGER COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

LAT...LON 3744 9014 3756 8986 3737 8986 3732 9011
TIME...MOT...LOC 2353Z 242DEG 11KT 3742 9001 

$$

GREG

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 3:05 PM CDT	Special Weather Statement	PAH	Mississippi	25 min
Jun 30, 5:47 PM CDT	Special Weather Statement	PAH	Bollinger	43 min
Jun 30, 6:09 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger	34 min

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.