Alert archive / Nebraska / Flash Flood Warnings in 1998
Flash Flood Warning 12, NWS Goodland, KS
NWS Goodland, KS issued this flash flood warning at Jul 21, 1998, 8:17 PM MDT for Dundy County, Nebraska. It was in force for 4 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 21, 1998, 8:17 PM MDT (02:17 UTC)
- Expired
- Jul 22, 1998, 12:00 AM MDT
- In force
- 4 hr
- Issued by
- NWS Goodland, KS
- Area
- Whole counties
County Dundy County, NE
The radar
The Goodland radar (KGLD), 90 km from the middle of the area, began a volume at 02:21 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
Denver, CO (KDNR), launched 00:00Z, 2.3 hours before the alert went out and 136 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.
- Mixed-layer CAPE
- 116 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 2387 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGLD 220218 FFWGLD NEC057-220600- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE GOODLAND KS 817 PM MDT TUE JUL 21 1998 THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A * FLASH FLOOD WARNING FOR... DUNDY COUNTY IN SOUTHWESTERN NEBRASKA * UNTIL MIDNIGHT MDT * AT 815 PM MDT...GOODLAND DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN LOCATED 14 MILES NORTH OF PARKS AND 13 MILES NORTH OF HAIGLER. * RADAR HAS ESTIMATED THAT BETWEEN 3 AND 4.5 INCHES OF RAIN HAS FALLEN IN THESE AREAS THROUGH THE PAST 3 HOURS. RAPID WATER RISES IN STREAMS...CREEKS...AND OTHER LOW LYING AREAS CAN BE EXPECTED. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGER OF FLOODING. HARMON
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 21, 2:42 PM MDT, 5 hours 35 minutes earlier.
Area forecast discussion, Jul 21, 2:42 PM MDT, 5 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 242 PM MDT (342 PM CDT) TUE JUL 21 1998 ...THUNDERSTORM CHANCES MAIN CHALLENGE FOR THIS PACKAGE... ETA MODEL OF CHOICE. WL HAVE TO WATCH BOUNDARIES AND SHORTWAVES ALOFT THRU THURSDAY. ETA SHOWS FAIRLY STRONG VORT MAX SPINNING OVER GLD CWA TONIGHT. SFC FRONT WL BE JUST N (NEBRASKA) WHERE BEST UPWARD FORCING DUE TO JET IS FCST. EXPECT TO SEE MOST ACTIVITY OVER FAR N ZONES NEAR VCNTY OF SLGT RISK AREA. ALSO...WK DIFFLUENT FLOW ALFOT SHOULD AID IN FURTHER CLOUD DVLPMNT AND STORMS BY 06Z. CONSIDERING LATEST SATELLITE IMAGERY...COULD BE EARLIER FOR SOME LOCATIONS. FRONT THEN SLIDES THRU CWA BY 12Z WED WITH UPSLOP FLOW SETTING UP. MODELS SIMILAR IN SFC LOW OVER SW KANSAS WEDNESDAY WITH FRONT EXTENDING ACROSS THE STATE. HIEST CAPES WL BE OVER FAR E PARTS OF FA. FEEL WITH UNSTABLE AMS AND NEARBY FRONT...TSTMS COULD DVLP EARLY WED. HOWEVER...ETA POINTS TO MAIN ACTIVITY OVER E AND S ZONES LATER WEDNESDAY AS SFC MSTR CONVERGENCE INCREASES. AS A RESULT...WL MENTION 40/50 PERCENT CHC TSTMS FOR CWA. REGARDLESS...COOLER DAYS AHEAD AFTER FROPA. UPSLOP FLOW LOOKS TO CONTINUE INTO THURSDAY WITH PLENTY OF LOW LVL MSTR AND TSTM OUTFLOW BOUNDARIES LIKELY. AVN HINTS AT ANOTHER SHORTWAVE THURSDAY THAT MAY AFFECT 4TH PERIOD POPS ACROSS W HALF OF CWA. WL STAY CLOSE TO NGM POPS AND TEMPS IN ALL 4 PERIODS. AVN LOOKS TOO WARM EARLY ON. .GLD...NONE. KPL
In the hours before
Special weather statement, Jul 21, 6:22 PM MDT, 1 hour 55 minutes before
NEZ079>081-220710- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GOODLAND KS 621 PM MDT (721 PM CDT) TUE JUL 21 1998 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EXTREME SOUTHWEST NEBRASKA UNTIL 2 AM CDT (1 AM MDT)... COUNTIES INCLUDED IN THIS WATCH ARE...DUNDY...HITCHCOCK...AND RED WILLOW. CITIES INCLUDED ARE MCCOOK...CULBERTSON...TRENTON...AND BENKELMAN. AT 705 PM CDT (605 PM MDT) STRONG THUNDERSTORMS WERE DEVELOPING ALONG AND NORTH OF U.S. HIGHWAY 34 BETWEEN THE COLORADO STATE LINE AND CULBERTSON...THEN EAST TO BETWEEN HOLDREGE AND ALMA. A CLUSTER OF SEVERE THUNDERSTORMS WAS FARTHER WEST IN THE SIDNEY NEBRASKA AND STERLING COLORADO AREAS MOVING EAST SOUTHEAST AT 15 MPH. GIVEN THE SLOW MOVEMENT OF SOME STORMS IN THE AREA THIS EVENING... VERY HEAVY RAINFALL OF MORE THAN 2 1/2 INCHES AN HOUR ARE LIKELY. THIS WILL CAUSE WATER TO RUN IN WASHES...DITCHES...AND OTHER NORMALLY DRY LOW LYING AREAS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE POSSIBLE IN AND NEAR THE WATCH AREA. WATCH FOR THREATENING WEATHER AND LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR FURTHER INFORMATION. SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 60 MPH AND HAIL OF 3/4 INCHES IN DIAMETER OR LARGER. STORMS IN THE NEBRASKA PANHANDLE AND NORTHEAST COLORADO HAVE ALREADY PRODUCED WIND GUSTS OF 70 MPH AND GOLFBALL SIZE HAIL. DURING A SEVERE THUNDERSTORM WATCH...BE R EADY TO MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE IF A WARNING IS ISSUED. ENTWISTLE
Nearby
Flash Flood Warnings in Nebraska, 1998Every 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.