Alert archive / Kansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 175, NWS Goodland, KS

July 23, 2009Cheyenne County, Sherman County, Kansas; Kit Carson County, Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 23, 2009, 6:25 PM CDT for Cheyenne County, Sherman County, Kansas; Kit Carson County, Yuma County, Colorado. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 23, 2009, 6:25 PM CDT (23:25 UTC)
Expired
Jul 23, 2009, 7:30 PM CDT
In force
65 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon

Counties Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS

The radar

The Goodland radar (KGLD), 45 km from the middle of the area, began a volume at 23:28 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 23, 3:30 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.4 hours before the alert went out and 99 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, Denver, CO at 12:00Z on 2009-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 155 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, Denver, CO at 12:00Z on 2009-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.19395878Sfc1 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
155 J/kg
Mixed-layer CIN
-353 J/kg
Mixed-layer LCL
2232 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 4:44 PM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jul 23, 4:44 PM CDT, 1 hour 41 minutes before
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Hazardous weather outlook, Jul 23, 10:58 AM CDT, 7 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
958 AM MDT THU JUL 23 2009

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-241345-
YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON-
SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA-
DUNDY-HITCHCOCK-RED WILLOW-
958 AM MDT THU JUL 23 2009 /1058 AM CDT THU JUL 23 2009/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST
NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO.

.DAY ONE...TODAY AND TONIGHT

WIDELY SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL OCCUR
AGAIN TODAY. THE BEST CHANCES WILL BE IN EASTERN COLORADO AND
SOUTHWEST NEBRASKA...WITH ONLY A SLIGHT CHANCE IN NORTHWEST KANSAS
TONIGHT. AN ISOLATED SEVERE STORM CANNOT BE RULED OUT...WITH GUSTY
WINDS AND LARGE HAIL BEING THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

DAILY CHANCES OF MAINLY AFTERNOON AND EVENING THUNDERSTORMS
WILL CONTINUE MUCH OF THIS PERIOD. WHILE NO WIDESPREAD SEVERE
WEATHER IS ANTICIPATED...ISOLATED STRONGER STORMS WILL CONTINUE TO
PRESENT A THREAT OF HAIL AND GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT.

KJ

In the hours before

Local storm report, Jul 23, 5:29 PM CDT, 56 minutes before
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Local storm report, Jul 23, 5:38 PM CDT, 47 minutes before
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Local storm report, Jul 23, 5:57 PM CDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
457 PM MDT THU JUL 23 2009

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

0450 PM     HAIL             STRATTON                39.30N 102.60W
07/23/2009  E0.88 INCH       KIT CARSON         CO   LAW ENFORCEMENT

&&

BLM
Local storm report, Jul 23, 5:58 PM CDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
458 PM MDT THU JUL 23 2009

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

0415 PM     TSTM WND GST     1 W YUMA                40.12N 102.74W
07/23/2009  M72 MPH          YUMA               CO   TRAINED SPOTTER

&&

BLM
Special weather statement, Jul 23, 5:58 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GOODLAND KS
458 PM MDT THU JUL 23 2009

COZ091-092-240000-
CHEYENNE COUNTY-KIT CARSON COUNTY-
458 PM MDT THU JUL 23 2009

...THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY FOR CHEYENNE COUNTY IN EAST CENTRAL COLORADO AND KIT
CARSON COUNTY IN EAST CENTRAL COLORADO...

AT 458 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR STRATTON...AND MOVING SOUTH AT 15 MPH.

PENNY TO NICKEL SIZE HAIL...AND WINDS TO 50 MPH ARE EXPECTED WITH
THIS STORM.

BE PREPARED TO TAKE SHELTER IN THE EVENT THESE STORMS INTENSIFY AND
BECOME SEVERE.

THEDE
Local storm report, Jul 23, 6:14 PM CDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
514 PM MDT THU JUL 23 2009

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

0440 PM     HAIL             YUMA                    40.12N 102.72W
07/23/2009  E0.88 INCH       YUMA               CO   TRAINED SPOTTER

            DOWNED TREE LIMBS UP TO 4 INCHES IN DIAMETER. 1.50 INCHES
            OF RAIN WITHIN 20 MINUTES.

&&

BLM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 7:04 PM CDTSevere Thunderstorm WarningGLDSherman, Thomas56 min
Jul 22, 7:11 PM CDTSevere Thunderstorm WarningGLDGraham, Norton42 min
Jul 22, 7:23 PM CDTFlash Flood WarningGLDCheyenne2 hr
Jul 22, 7:40 PM CDTSevere Thunderstorm WarningGLDWichita30 min
Jul 22, 7:48 PM CDTSevere Thunderstorm WarningGLDGraham, Sheridan57 min
Jul 22, 7:44 PM CDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson61 min
Jul 23, 3:56 PM CDTSevere Thunderstorm WarningGLDYuma64 min
Jul 23, 4:38 PM CDTSevere Thunderstorm WarningGLDYuma67 min
Jul 23, 4:41 PM CDTSevere Thunderstorm WarningGLDKit Carson64 min
Jul 23, 5:37 PM CDTSevere Thunderstorm WarningGLDYuma53 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2009Severe Thunderstorm Warnings in Colorado, 2009Every severe thunderstorm warning in 2009

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.