Alert archive / Kansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 18, NWS Goodland, KS

May 14, 1999Decatur County, Kansas; Red Willow County, Nebraska

NWS Goodland, KS issued this severe thunderstorm warning at May 14, 1999, 8:37 PM CDT for Decatur County, Kansas; Red Willow County, Nebraska. It was in force for 43 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 14, 1999, 8:37 PM CDT (01:37 UTC)
Expired: May 14, 1999, 9:20 PM CDT
In force: 43 min
Issued by: NWS Goodland, KS
Area: Whole counties

Counties Decatur County, KS, Red Willow County, NE

The radar

The Goodland radar (KGLD), 126 km from the middle of the area, began a volume at 01:36 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
May 14, 8:45 PM CDT	Hail 0.75	Norcatur, KS
May 14, 8:50 PM CDT	Hail 0.75	Lebanon, NE
May 14, 9:27 PM CDT	Hail 0.75	Norcatur, KS

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 14, 4:00 PM CDT	Tornado Watch	SPC	6 hr
May 14, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.6 hours before the alert went out and 128 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: 87 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 14, 2:43 PM CDT, 5 hours 54 minutes earlier.

Area forecast discussion, May 14, 2:43 PM CDT, 5 hours 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
143 PM MDT FRI MAY 14 1999

...MAIN FORECAST CHALLENGES ARE POPS ALL PERIOD AND HIGHS SATURDAY...

SATELLITE SHOWS VORT OVER SRN WY...A DIGGING TROUGH OVER WRN CO AND
A STRONG JET MOVING TOWARD AREA. SFC MAP HAS NUMEROUS BOUNDARY OVER
FA INCLUDING A WARM FRONT TO THE SOUTH...DRY LINE TO THE WEST AND
STATIONARY FRONT TO THE NORTHWEST.

ALL MODELS IN RELATIVELY GOOD AGREEMENT EXCEPT IN THE POSITIONING OF
THE SFC LOW. IT SEEMS ETA HAS THE BEST HANDLE ON THIS. NGM IS TOO
FAR EAST AND AVN TOO FAR NORTH. WITH THIS IN MIND...WILL FOLLOW ETA.

FOR TONIGHT WILL GO WITH SCT POPS EVERYWHERE WITH POSSIBLE SVR
WORDING IN NORTHEAST ZONES...THIS MAY CHANGE IF WATCH IS ISSUED.
CONVECTION HAS ALREADY BEGAN FIRING OVER THE FRONT RANGE AND THE CAP
SHOULD CONTINUE TO WEAKEN OVER FA THE REST OF THE AFTERNOON. TRIPLE
POINT LOOKS TO BE ON THE NE/CO LINE JUST NORTH OF THE KS STATE LINE.
LOW LEVEL WINDS LOOK FAVORABLE ALONG WITH ALL OTHER FACTORS EXPECT
SVR STORMS TONIGHT. SOUTH WINDS OVER KS/NE TONIGHT SHOULD ALLOW
TEMPS TO STAY UP AROUND FWC NUMBERS. VARIABLE WINDS OVER COLORADO
TONIGHT WITH WINDS GOING CALM AT TIMES COULD MAKE IT COOLER.

SAME SCENARIO EXISTS FOR SATURDAY AS UPPER LEVEL TROUGH REMAINS WEST
OF FA. IT LOOKS LIKE THE TRIPLE POINT FOR SAT WILL BE SLIGHTLY MORE
NORTHEAST THAN TODAY AS DRYLINE MAKES IT/S WAY FURTHER EAST. WILL GO
WITH WIDELY SCT POPS IN THE AFTERNOON WITH SCT SAT NIGHT. EXPECT
COLD FRONT TO MAKE IT/S WAY THROUGH FA SAT EVENING SHIFTING WINDS
AROUND TO THE NORTH AND BRINGING STRONG DYNAMICS TO THE
AREA...ESPECIALLY IN THE EAST. WILL GO CLOSER TO THE HIGHER FWC
NUMBERS DUE TO THE STRONG WAA PROGGED AND THE DRIER AIR MOVING INTO
SWRN AREAS OF FA.

THUNDERSTORMS AND SHOWERS LOOK TO CONTINUE SUNDAY NIGHT THROUGH AT
LEAST TUESDAY. DRIER AIR SHOULD MOVE IN WEDNESDAY...ALLOWING A BREAK
IN THE PRECIPITATION.

.GLD...NONE.

MLC

In the hours before

Local storm report, May 14, 5:23 PM CDT, 3 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
423 PM MDT FRI MAY 14 1999

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0418 PM    6 NE YUMA                 CO    .88 INCH HAIL
05/14/99   YUMA

Local storm report, May 14, 5:45 PM CDT, 2 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
445 PM MDT FRI MAY 14 1999

TIME(MDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0440 PM    14 NW WRAY                CO    1.75 INCH HAIL
05/14/99   YUMA

Local storm report, May 14, 6:07 PM CDT, 2 hours 30 minutes before

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Local storm report, May 14, 6:10 PM CDT, 2 hours 27 minutes before

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Local storm report, May 14, 6:45 PM CDT, 1 hour 52 minutes before

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Local storm report, May 14, 6:57 PM CDT, 1 hour 40 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 8:42 PM CDT	Severe Thunderstorm Warning	GLD	Norton	63 min
May 14, 9:17 PM CDT	Severe Thunderstorm Warning	GLD	Decatur	48 min
May 14, 9:45 PM CDT	Severe Thunderstorm Warning	GLD	Norton	60 min
May 14, 10:19 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Sheridan	61 min
May 14, 10:43 PM CDT	Severe Thunderstorm Warning	GLD	Norton	62 min
May 14, 11:26 PM CDT	Severe Thunderstorm Warning	GLD	Graham	59 min
May 14, 7:34 PM CDT	Severe Thunderstorm Warning	GLD	Hitchcock, Red Willow	46 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1999 Severe Thunderstorm Warnings in Nebraska, 1999 Every severe thunderstorm warning in 1999

Sources

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