Alert archive / Nebraska / Flash Flood Warnings in 1998
Flash Flood Warning 3, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jul 29, 1998, 2:09 PM MDT for Kimball 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 29, 1998, 2:09 PM MDT (20:09 UTC)
- Expired
- Jul 29, 1998, 6:10 PM MDT
- In force
- 4 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Kimball County, NE
The radar
The Cheyenne radar (KCYS), 91 km from the middle of the area, began a volume at 20:11 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 12:00Z, 8.2 hours before the alert went out and 153 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
- 2 J/kg
- Mixed-layer CIN
- -231 J/kg
- Mixed-layer LCL
- 1470 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 292010 FFWCYS NEC105-300010- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 209 PM MDT WED JUL 29 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... KIMBALL COUNTY IN THE NEBRASKA PANHANDLE * UNTIL 610 PM MDT * AT 205 PM MDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN FROM KIMBALL TO 18 MILES SOUTHWEST OF KIMBALL... MOVING SLOWLY EAST. * A USAF SITE IN THIS AREA RECORDED 1.32 INCHES OF RAIN SINCE 1 PM. DOPPLER RADAR ESTIMATES MORE THAN 4 INCHES OF RAIN 14 MILES SOUTHWEST OF KIMBALL SINCE 1230 PM. DO NOT DRIVE THROUGH FLOODED AREAS. SHALLOW...SWIFTLY FLOWIN G WATER CAN WASH A CAR FROM A ROADWAY. ALSO...THE ROADBED MAY NOT BE INTACT UNDER THE WATER. SULLIVAN &
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.
In the hours before
Special weather statement, Jul 29, 10:03 AM MDT, 4 hours 6 minutes before
NEZ001>003-019>021-054-055-WYZ059>070-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1003 AM MDT WED JUL 29 1998 THE SEVERE WEATHER POTENTIAL IN SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE WILL BE LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...A WEAK UPPER LEVEL DISTURBANCE WILL MOVE FROM CENTRAL WYOMING TO WESTERN NEBRASKA BY THIS EVENING. WITH INCREASED MOISTURE OVER THE STATE...THUNDERSTORM CHANCES OVER THE EASTERN PART OF THE STATE AND WESTERN NEBRASKA WILL INCREASE. INSTABILITIES OVER SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE WILL BE MODERATE TODAY...HOWEVER WARM TEMPERATURES ALOFT WILL KEEP THUNDERSTORMS FROM BECOMIN"G VERY STRONG. THUNDERSTORMS THAT DEVELOP TODAY WILL BE SLOW MOVING. VERY HEAVY RAIN...SMALL HAIL...AND GUSTS TO 40 MPH ARE POSSIBLE WITH THE STORMS THIS AFTERNOON AND EVENING. WCJIN-WYSE-WYNE LRE
Special weather statement, Jul 29, 10:03 AM MDT, 4 hours 6 minutes before
NEZ001>003-019>021-054-055-WYZ059>070-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1003 AM MDT WED JUL 29 1998 THE SEVERE WEATHER POTENTIAL IN SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE WILL BE LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...A WEAK UPPER LEVEL DISTURBANCE WILL MOVE FROM CENTRAL WYOMING TO WESTERN NEBRASKA BY THIS EVENING. WITH INCREASED MOISTURE OVER THE STATE...THUNDERSTORM CHANCES OVER THE EASTERN PART OF THE STATE AND WESTERN NEBRASKA WILL INCREASE. INSTABILITIES OVER SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE WILL BE MODERATE TODAY...HOWEVER WARM TEMPERATURES ALOFT WILL KEEP THUNDERSTORMS FROM BECOMIN"G VERY STRONG. THUNDERSTORMS THAT DEVELOP TODAY WILL BE SLOW MOVING. VERY HEAVY RAIN...SMALL HAIL...AND GUSTS TO 40 MPH ARE POSSIBLE WITH THE STORMS THIS AFTERNOON AND EVENING. WCJIN-WYSE-WYNE LRE
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.