Alert archive / Kansas / Special Weather Statements in 2021

Special Weather Statement, NWS Hastings, NE

September 17, 2021Rooks County, Kansas

NWS Hastings, NE issued this special weather statement at Sep 17, 2021, 4:55 PM CDT for Rooks County, Kansas. It was in force for 50 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
Sep 17, 2021, 4:55 PM CDT (21:55 UTC)
Expired
Sep 17, 2021, 5:45 PM CDT
In force
50 min
Issued by
NWS Hastings, NE
Hail
0.88 in
Wind
30

County Rooks County, KS

The radar

The Grand Island radar (KUEX), 152 km from the middle of the area, began a volume at 21:58 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.

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 9.9 hours before the alert went out and 165 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-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2021-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 326 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2021-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
326 J/kg
Mixed-layer CIN
-373 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
372 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 17, 10:24 AM CDTSpecial Weather StatementGIDFranklin, Webster36 min
Sep 17, 11:03 AM CDTSpecial Weather StatementGIDFranklin27 min
Sep 17, 11:36 AM CDTAreal Flood AdvisoryGIDFranklin2 hr
Sep 17, 11:17 AM CDTSpecial Weather StatementGIDPhillips43 min
Sep 17, 1:01 PM CDTSpecial Weather StatementGIDRooks44 min
Sep 17, 1:31 PM CDTSpecial Weather StatementGIDSmith44 min

Nearby

Special Weather Statements in Kansas, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.