Alert archive / Kansas / Flash Flood Warnings in 1998

Flash Flood Warning 8, NWS Goodland, KS

July 9, 1998Logan County, Kansas

NWS Goodland, KS issued this flash flood warning at Jul 9, 1998, 8:37 PM CDT for Logan County, Kansas. It was in force for 6 hr. 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 9, 1998, 8:37 PM CDT (01:37 UTC)
Expired: Jul 10, 1998, 2:40 AM CDT
In force: 6 hr
Issued by: NWS Goodland, KS
Area: Whole counties

County Logan County, KS

The radar

The Goodland radar (KGLD), 69 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.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.6 hours before the alert went out and 168 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: 2245 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1476 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGLD 100137
FFWGLD
KSC109-100740-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
737 PM MDT (837 PM CDT) THU JUL 9 1998

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LOGAN COUNTY IN WEST CENTRAL KANSAS

* UNTIL 240 AM CDT (140 AM MDT)

* AT AT 835 PM CDT...GOODLAND DOPPLER RADAR INDICATED THUNDERSTORMS
  WITH VERY HEAVY RAIN NORTHWESTERN LOGAN COUNTY...AND WAS NEARLY
  STATIONARY.

* HEAVY RAINS ARE EXPECTED OVER WESTERN LOGAN COUNTY THROUGH 11 PM
  AS AN ADDITIONAL AREA OF THUNDERSTORMS MOVES INTO THE COUNTY FROM
  EASTERN COLORADO.

DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.
6
BARKER

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 9, 2:48 PM CDT, 5 hours 49 minutes earlier.

Area forecast discussion, Jul 9, 2:48 PM CDT, 5 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
148 PM MDT (248 PM CDT) THU JUL 9 1998

...THE CHALLENGE THIS FCST PACKAGE IS TSTM POTENTIAL AND
HVY RNFL THREAT...

ALL MODELS HV BEEN DOING POORLY LATELY...HWVR...LIKE THE NGM/AVN
THIS FCST PACKAGE. LTST WTR VAPOR AND VISIBLE LOOP SHOWS SW MONSOON
MOISTURE PLUME OVR MUCH OF CWA...WITH MID LVL DRY PUNCH MOVING N
THRU SE CO AND SW KS. LTST RADAR LOOP ALSO INDCS SOME WK CNVTN OVR
SW NEBRASKA ERN CO...UNDER MN MOISTURE PLUME.

FEEL CNVTN WILL CONT OVR NE CO...SW NEBRASKA TNGT WITH POSSIBLE MCS
DVLPMT SPCLY OVR NRN CWA. THIS FITS WELL WITH BOTH NGM/AVN PRECIP
FIELDS THRU 6Z FRI. ALSO...700 MB OMEGA FIELDS ALSO SUPPORT CNVTN OVR
NE CO AND SW NEBRASKA...WITH E/SE PROPAGATION INDCD BY THE CORFIDI
VECTORS. MODIFIED SOUNDING GIVES CAPES OF OVR 2000 WITH LI OF ARND
-7 FOR GLD AND HLC AND WET BULB TEMPS 2000 FT LWR THAN YDA...CANT
RULE OUT ISOLD SVR WITH VERY HVY RNFL LKLY. CONSIDERING ABNDT
RNFL...CRNT FLDNG OVR PORTIONS OF CWA FM LAST NGTS RNFL AND PW OVR
ONE INCH...WILL ISSUE FLASH FLD WTCH FOR A PTN OF CWA OVNGT. WITH
THIS IN MIND WILL GO SLIGHTLY ABV MOS POPS TNGT WITH MN THREAT N OF
I-70.

STAYING WITH MOS...WILL KEEP POPS IN PACKAGE THRU FRI NGT WITH
MOISTURE PLUME LKLY LINGERING OVR CWA. TEMPS LOOK RESONABLE WITH MOS
DOING EXCELLENT JOB. EXTENDED FCST MODELS SHO POSSIBLE CNVTN ON
SUN...WITH DRYING MONDAY AND TUE.

CONFIDENCE IS RATED BELOW AVERAGE THIS FCST GVN INCONSISTENT
PAST MODEL PERFORMANCE...HWVR...FEEL THAT THE POP COVERAGE IN THE
CRNT PACKAGE IS RESONABLE CONSIDERING AN AVERAGE OF ALL MODEL
PARAMETERS AND PAST EVE RNFL.

.GLD...FLASH FLOOD WATCH FOR NW KS COUNTIES 1...13...14...27...28

MATHEWSON/VJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:29 PM CDT	Severe Thunderstorm Warning	GLD	Logan	61 min
Jul 9, 8:59 PM CDT	Severe Thunderstorm Warning	GLD	Sherman	66 min
Jul 9, 9:08 PM CDT	Tornado Warning	GLD	Sherman	62 min
Jul 9, 9:29 PM CDT	Severe Thunderstorm Warning	GLD	Logan	66 min
Jul 9, 9:56 PM CDT	Flash Flood Warning	GLD	Wallace	6 hr
Jul 9, 10:34 PM CDT	Flash Flood Warning	GLD	Logan, Sherman, Wallace	14 hr
Jul 9, 10:34 PM CDT	Flash Flood Warning	GLD	Logan, Sherman, Wallace	2 hr
Jul 10, 1:36 AM CDT	Severe Thunderstorm Warning	GLD	Greeley	64 min

Nearby

Flash Flood Warnings in Kansas, 1998 Every flash flood warning in 1998

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.