Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 37, NWS Dodge City, KS

May 21, 2020Trego County, Kansas

NWS Dodge City, KS issued this severe thunderstorm warning at May 21, 2020, 8:35 PM CDT for Trego County, Kansas. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 21, 2020, 8:35 PM CDT (01:35 UTC)
Expired: May 21, 2020, 9:30 PM CDT
In force: 55 min
Issued by: NWS Dodge City, KS
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Trego County, KS

The radar

The Dodge City radar (KDDC), 133 km from the middle of the area, began a volume at 01:38 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 21, 3:15 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.6 hours before the alert went out and 132 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: 1349 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1147 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

As transmitted.

543 
WUUS53 KDDC 220135
SVRDDC
KSC195-220230-
/O.NEW.KDDC.SV.W.0037.200522T0135Z-200522T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Dodge City KS
835 PM CDT Thu May 21 2020

The National Weather Service in Dodge City has issued a

* Severe Thunderstorm Warning for...
  Trego County in west central Kansas...

* Until 930 PM CDT.

* At 835 PM CDT, a severe thunderstorm was located 9 miles southwest
  of Collyer, moving east at 40 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Wakeeney, Ogallah, Collyer, Trego Center, Voda and Cedar Bluff. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3913 9968 3870 9969 3870 10015 3913 10015
TIME...MOT...LOC 0135Z 261DEG 34KT 3891 10019 

HAIL...1.50IN
WIND...60MPH
 
$$

Tatro

2 follow-up statements

149 
WWUS53 KDDC 220214
SVSDDC

Severe Weather Statement
National Weather Service Dodge City KS
914 PM CDT Thu May 21 2020

KSC195-220230-
/O.CON.KDDC.SV.W.0037.000000T0000Z-200522T0230Z/
Trego KS-
914 PM CDT Thu May 21 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR TREGO COUNTY...

At 914 PM CDT, a severe thunderstorm was located near Trego Center,
moving east at 30 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...
Wakeeney, Ogallah, Trego Center, Voda and Cedar Bluff. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3913 9968 3870 9969 3870 10003 3913 10004
TIME...MOT...LOC 0214Z 267DEG 33KT 3887 9978 

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

Tatro

760 
WWUS53 KDDC 220227
SVSDDC

Severe Weather Statement
National Weather Service Dodge City KS
927 PM CDT Thu May 21 2020

KSC195-220237-
/O.EXP.KDDC.SV.W.0037.000000T0000Z-200522T0230Z/
Trego KS-
927 PM CDT Thu May 21 2020

...THE SEVERE THUNDERSTORM WARNING FOR TREGO COUNTY WILL EXPIRE AT
930 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 gusty
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
west central Kansas.

LAT...LON 3913 9968 3870 9969 3870 10003 3913 10004
TIME...MOT...LOC 0227Z 261DEG 34KT 3889 9965 

$$

Tatro

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Dodge City, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 5:55 PM CDT, 2 hours 40 minutes earlier.

Area forecast discussion, May 21, 5:55 PM CDT, 2 hours 40 minutes before

Area Forecast Discussion
National Weather Service Dodge City KS
555 PM CDT Thu May 21 2020

...updated aviation...

.SHORT TERM...(This evening through Friday)
Issued at 226 PM CDT Thu May 21 2020

MSAS showing weak surface low pressure centered over the western
Oklahoma panhandle with attendant cold front from wet of Syracuse
into southwest Nebraska this afternoon. Also a dryline and warmfront
extended south from near LBL into the Texas Panhandle. Ahead and
east of these features has been a stubborn field of stratus clouds
that has created a large temperatures difference from the upper 60s
to low 70s under the cloud cover and contrasted by low 80s over the
Sunny Syracuse-Johnson-Elkhart area. Latest HRRR initiate these
convective elements at 21 UTC along the cold front along the highway
25 corridor with organized elements reaching the highway 83 corridor
by around 10 pm. In addition to a hail and 60-70 mph wind threat, a
sizable area of 1 to 2 inch rain is likely with more localized areas
of 3 and 4 inches just as likely.  Increased Pops over the area as
widespread trailing stratiform precipitation is likely beyond
midnight even as the overall severe risk should be decreasing.
Uncertainty with respect to  and additional marginally elevated
severe pulse hail storms in the southeast will revolve around mid
level wave that will be moving into the area during the overnight
hours. Lows are forecast from the mid 50s west to more mild
summerlike 60s across south central Kansas.

.LONG TERM...(Friday night through Thursday)
Issued at 226 PM CDT Thu May 21 2020

Potential exists for thunderstorms to be ongoing early Friday
morning across the eastern and especially south central Kansas
counties as models show a mid level trough/weak pvu anomaly moving
though the area with still conditionally unstable air. This
should clear out though with sky becoming sunny area wide by
afternoon resulting in temperatures warming into the 80s all the
way to Hays. It will likely remain inactive later in the day
Friday with respect to convection, however the 850 wind field
transitions from weak easterly flow Friday to veering and
increasing winds though Saturday, with stronger south winds, and
better moisture transport ahead of a dryline for Saturday late
afternoon and Saturday evening. As a result , convection is
possible Saturday across the eastern counties. The southwest winds
will make temperatures much warmer on Saturday, before a cold
front tempers highs and focuses severe weather chances once again
along a southward propagating cold front through Sunday night.
This will setup Monday to likely be cooler and cloudy and perhaps
showery with diurnal thunderstorms.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 555 PM CDT Thu May 21 2020

The main concern for the TAF forecast is +TSRA for the terminals this
evening. All modes of severe threats will be possible with this activity...
landspouts, large hail, and severe outflow winds of 50+kt. Mid to late
evening is the most likely time of impacts to the terminals. This activity
will eventually evolve into a line and move out of the terminal space
by 06Z. Tranquil weather is expected thereafter. With continued moisture
advection, MVFR cigs may be possible once again by 12Z.

&&

.PRELIMINARY POINT TEMPS/POPS...
DDC  56  81  59  91 /  60  20   0   0
GCK  53  81  56  91 /  80  10   0   0
EHA  54  84  56  91 /  40  10   0   0
LBL  54  83  58  93 /  50  20   0   0
HYS  57  80  56  88 /  80  20  10  10
P28  61  81  61  90 /  70  60  10  10

&&

.DDC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...Russell
LONG TERM...Russell
AVIATION...Sugden

Hazardous weather outlook, May 21, 3:45 AM CDT, 16 hours 50 minutes before

Hazardous Weather Outlook
National Weather Service Dodge City KS
345 AM CDT Thu May 21 2020

KSZ030-031-043>046-061>066-074>081-084>090-221000-
Trego-Ellis-Scott-Lane-Ness-Rush-Hamilton-Kearny-Finney-Hodgeman-
Pawnee-Stafford-Stanton-Grant-Haskell-Gray-Ford-Edwards-Kiowa-
Pratt-Morton-Stevens-Seward-Meade-Clark-Comanche-Barber-
345 AM CDT Thu May 21 2020 /245 AM MDT Thu May 21 2020/

This hazardous weather outlook is for portions of central...south
central...southwest and west central Kansas.

.DAY ONE...Today and tonight.

Day 1 Discussion
----------------

There will be a chance for severe thunderstorms late today and
early tonight. The main hazards will be hail 2 inches and larger,
strong damaging winds greater up to 70 mph and periods of heavy
rainfall. An isolated tornado can not be ruled out.

Day 1 Hazards
-------------
* Tornado: Limited risk
* Hail: Limited risk
* Thunderstorm wind damage: Limited risk
* Lightning: Significant risk
* Non-thunderstorm wind: Limited risk

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Days 2-7 Discussion
-------------------

There will be a chance for strong to severe thunderstorms Sunday
night. Large hail and periods of heavy rainfall currently appear
to be the main hazards from these storms.

Days 2-7 Hazards
----------------
* Friday
  - Lightning: Elevated risk
  - Severe thunderstorm: Limited risk

* Saturday
  - Lightning: Limited risk
  - Non thunderstorm wind: Limited risk
  - Fire weather: Elevated risk

* Sunday
  - Lightning: Elevated risk
  - Non thunderstorm wind: Limited risk

* Monday
  - Lightning: Limited risk

* Tuesday
  - Lightning: Limited risk

* Wednesday
  - Lightning: Limited risk

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required after 4 pm, especially south
of a Garden City to Dodge City line.

&&

For more details visit our webpage
https://weather.gov/crh/ghwo?sid=ddc

In the hours before

Local storm report, May 21, 8:08 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
808 PM CDT THU MAY 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0759 PM     HAIL             3 NE JOHNSON CITY       37.59N 101.71W
05/21/2020  E1.00 INCH       STANTON            KS   LAW ENFORCEMENT

&&

Local storm report, May 21, 8:12 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
812 PM CDT THU MAY 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0801 PM     TORNADO          8 SSW HICKOK            37.45N 101.27W
05/21/2020                   GRANT              KS   STORM CHASER

&&

MR

Special weather statement, May 21, 8:17 PM CDT, 18 minutes before

Special Weather Statement
National Weather Service Dodge City KS
817 PM CDT Thu May 21 2020

KSZ043>045-062-063-220145-
Finney KS-Kearny KS-Lane KS-Scott KS-Ness KS-
817 PM CDT Thu May 21 2020

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL KEARNY...
NORTHWESTERN FINNEY...NORTHWESTERN NESS...EASTERN SCOTT AND LANE
COUNTIES UNTIL 845 PM CDT...

At 816 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles south of Gove to near Healy to near
Shallow Water to 11 miles north of Deerfield. Movement was east at
30 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Scott City, Dighton, Grigston, Healy, Friend, Shallow Water, Manning,
Pendennis, Amy and Shields.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southwestern and west central Kansas.

LAT...LON 3870 10017 3856 10027 3837 10053 3812 10079
      3809 10123 3843 10092 3867 10082 3870 10079
TIME...MOT...LOC 0116Z 273DEG 30KT 3879 10044 3862 10055 3839 10086
3815 10111

Tatro

Local storm report, May 21, 8:20 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
820 PM CDT THU MAY 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0815 PM     HAIL             1 N MOSCOW              37.34N 101.21W
05/21/2020  E2.00 INCH       STEVENS            KS   STORM CHASER

&&

Local storm report, May 21, 8:30 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
830 PM CDT THU MAY 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0824 PM     TORNADO          11 SE LAKIN             37.81N 101.13W
05/21/2020                   KEARNY             KS   TRAINED SPOTTER

&&

Local storm report, May 21, 8:33 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DODGE CITY KS
833 PM CDT THU MAY 21 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0820 PM     HAIL             5 NW CAVE               37.40N 101.21W
05/21/2020  E2.00 INCH       GRANT              KS   TRAINED SPOTTER

&&

The office that day

Everything else NWS Dodge City, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 7:02 PM CDT	Severe Thunderstorm Warning	DDC	Hamilton, Stanton	43 min
May 21, 7:07 PM CDT	Tornado Warning	DDC	Kearny	38 min
May 21, 7:12 PM CDT	Severe Thunderstorm Warning	DDC	Haskell, Seward	48 min
May 21, 7:14 PM CDT	Flash Flood Warning	DDC	Hamilton, Kearny	2 hr
May 21, 7:28 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Haskell, Seward, Stevens	47 min
May 21, 7:33 PM CDT	Severe Thunderstorm Warning	DDC	Stanton	42 min
May 21, 7:37 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Kearny	38 min
May 21, 7:43 PM CDT	Special Weather Statement	DDC	Scott	32 min
May 21, 7:59 PM CDT	Severe Thunderstorm Warning	DDC	Gray, Haskell	34 min
May 21, 8:08 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Stanton	52 min
May 21, 8:10 PM CDT	Severe Thunderstorm Warning	DDC	Finney, Grant, Kearny	50 min
May 21, 8:17 PM CDT	Special Weather Statement	DDC	Lane	28 min
May 21, 8:17 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Haskell	43 min
May 21, 8:32 PM CDT	Tornado Warning Tornado observed	DDC	Finney, Kearny	20 min
May 21, 8:44 PM CDT	Special Weather Statement	DDC	Finney, Lane	46 min
May 21, 8:53 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Haskell, Seward, Stevens	52 min
May 21, 8:54 PM CDT	Severe Thunderstorm Warning	DDC	Finney	51 min
May 21, 9:02 PM CDT	Tornado Warning	DDC	Haskell	28 min
May 21, 9:23 PM CDT	Special Weather Statement	DDC	Ellis, Ness	52 min
May 21, 9:26 PM CDT	Special Weather Statement	DDC	Finney	49 min
May 21, 9:36 PM CDT	Special Weather Statement	DDC	Gray	39 min
May 21, 9:40 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Gray, Haskell, Meade, Seward, Stevens	50 min
May 21, 9:48 PM CDT	Tornado Warning	DDC	Gray, Haskell	13 min
May 21, 9:51 PM CDT	Special Weather Statement	DDC	Hodgeman	39 min
May 21, 9:56 PM CDT	Special Weather Statement	DDC	Rush	49 min
May 21, 10:16 PM CDT	Special Weather Statement	DDC	Gray	29 min
May 21, 10:27 PM CDT	Severe Thunderstorm Warning	DDC	Haskell, Seward, Stevens	48 min
May 21, 10:31 PM CDT	Severe Thunderstorm Warning	DDC	Ford, Gray, Meade	32 min
May 21, 10:43 PM CDT	Special Weather Statement	DDC	Hodgeman	47 min
May 21, 11:13 PM CDT	Special Weather Statement	DDC	Meade, Seward	47 min
May 22, 2:41 PM CDT	Red Flag Warning	DDC	Hamilton, Morton, Stanton	30 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2020 Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.