Alert archive / Nebraska / Flash Flood Warnings in 1996
Flash Flood Warning 7, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Aug 29, 1996, 7:43 PM MDT for Cheyenne County, Nebraska. It was in force for 3 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
- Aug 29, 1996, 7:43 PM MDT (01:43 UTC)
- Expired
- Aug 29, 1996, 10:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 152 km from the middle of the area, began a volume at 01:43 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, 1.7 hours before the alert went out and 151 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
- 702 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 2013 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 300145 FFWCYS NEC033-300445- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOODING WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 743 PM MDT THU AUG 29 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A FLASH FLOODING WARNING EFFECTIVE UNTIL 1045 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN THE NEBRASKA PANHANDLE ...CHEYENNE COUNTY AT 730 PM MDT...RADAR INDICATED THA THE THUNDERSTORMS OVER CHEYENNE COUNTY HAD DECREASED IN INTENSITY. THE FLOODING CAUSED BY EARLIER HEAVY RAINS PERSISTS HOWEVER AND SOME ROADS REMAIN CLOSED. THE FLASH FLOOD WARNING FOR CHEYENNE COUNTY HAS BEEN EXTENDED UNTIL 1045 PM. DO NOT DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGER OF FLOODING. PAL
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, Aug 29, 3:21 PM MDT, 4 hours 22 minutes before
WYZ066-069-070-292220- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 321 PM MDT THU AUG 29 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR SOUTHEAST WYOMING AND FOR THE PANHANDLE OF NEBRASKA UNTIL 800 PM... AT 315 PM MDT...WEATHER RADAR INDICATED A GROUP OF STRONG THUNDERSTORMS LOCATED BETWEEN 15 AND 30 MILES NORTHWEST OF CHEYENNE. THE STRONGEST OF THESE THUNDERSTORMS WAS LOCATED 30 MILES NORTHWEST OF CHEYENNE. THESEH THUNDERSTORMS WERE MOVING SLOWLY TO THE EAST. THESE THUNDERSTORMS WERE LIKELY PRODUCING SMALL HAIL...HEAVY RAIN... AND DANGEROUS LIGHTNING. THE HEAVY RAIN IS LIKELY TO PRODUCE PONDING OF WATER ON ROADS AND LOW LYING AREAS. LRE
Special weather statement, Aug 29, 3:23 PM MDT, 4 hours 20 minutes before
WYZ066-069-070-292220- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE CHEYENNE WY 321 PM MDT THU AUG 29 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR SOUTHEAST WYOMING AND FOR THE PANHANDLE OF NEBRASKA UNTIL 800 PM... AT 315 PM MDT...WEATHER RADAR INDICATED A GROUP OF STRONG THUNDERSTORMS LOCATED BETWEEN 15 AND 30 MILES NORTHWEST OF CHEYENNE. THE STRONGEST OF THESE THUNDERSTORMS WAS LOCATED 30 MILES NORTHWEST OF CHEYENNE. THESE THUNDERSTORMS WERE MOVING SLOWLY TO THE EAST. THESE THUNDERSTORMS WERE LIKELY PRODUCING SMALL HAIL...HEAVY RAIN... AND DANGEROUS LIGHTNING. THE HEAVY RAIN IS LIKELY TO PRODUCE PONDING OF WATER ON ROADS AND LOW LYING AREAS. JLRE WCJIN-WYSE
Special weather statement, Aug 29, 3:56 PM MDT, 3 hours 47 minutes before
NEZ001>003-019>021-054-055-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 356 PM MDT THU AUG 29 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR SOUTHEAST WYOMING AND FOR THE PANHANDLE OF NEBRASKA UNTIL 800 PM... AT 350 PM MDT...WEATHER RADAR INDICATED A FEW STRONG THUNDERSTORMS OVER THE WESTERN NEBRASKA PANHANDLE. THE STRONGEST STORM WAS LOCATED 25 MILES NORTHEAST OF SYNDEY. THIS THUNDERSTORM WAS MOVING EAST AT 10 MPH. ANOTHER STORM WAS LOCATED JUST NORTHWEST OF HARISBURG. THIS THUNDERSTORM WAS MOVING EAST AT 10 MPH. THESE THUNDERSTORMS WERE LIKELY PRODUCING SMALL HAIL...HEAVY RAIN... STRONG GUSTY WINDS... AND DANGEROUS LIGHTNING. THE HEAVY RAIN IS LIKJELY TO PRODUCE PONDING OF WATER ON ROADS AND LOW LYING AREAS. LRE
Special weather statement, Aug 29, 5:03 PM MDT, 2 hours 40 minutes before
NEZ001>003-019>021-054-055-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 502 PM MDT THU AUG 29 1996 AT 455 PM MDT...DOPPLER RADAR INDICATED A NUMBER OF THUNDERSTORMS OVER THE NEBRASKA PANHANDLE. THE STRONGEST STORM WAS JUST EAST OF SIDNEY IN CHEYENNE COUNTY. THE STORM WAS NEARLY STATIONARY. ANOTHER STRONG STORM WAS LOCATED ON THE SCOTT BLUFF...BANNER AND MORRILL TRI COUNTY JUNCTION. THIS STORM WAS ALSO NEARLY STATIONARY. A GROUP OF WEAKER STORMS WERE LOCATED OVER NORTHERN SIOUX AND DAWES COUNTIES. MOVEMENT OF THESE STORM WAS TO THE EAST AT 10 MILES AN HOUR. HEAVY RAIN AND SMALL HAIL...DANGEROUS LIGHTNING AND GUSTY WINDS TO 40 MILES AN HOUR CAN BE EXPEC@TED WITH THESE STORMS UNTIL 6 PM. PAL
Special weather statement, Aug 29, 7:01 PM MDT, 42 minutes before
NEZ001>003-019>021-300200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 643 PM MDT THU AUG 29 1996 AT 645 PM MDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS FROM SOUTHWEST DAWES COUNTY SOUTHWEST THROUGH SOUTHCENTRAL SIOUX COUNTY INTO NORTHWEST SCOTTS BLUFF COUNTY NEBRASKA. THE LOCATION OF THE STRONGER STORMS ARE...15 MILES WEST OF HEMINGFORD ...22 MILES SOUTHWEST OF HEMINGFORD...AND 10 MILES NORTHWEST OF SCOTTSBLUFF NEAR MITCHELL. MODERATE RAINFALL HAS BEEN REPORTED FROM THESE STRONG STORMS. THE STORMS WERE MOVING NORTHEAST AT 20 MILES AN HOUR. PAL
Special weather statement, Aug 29, 7:13 PM MDT, 30 minutes before
WYZ060-066>070-300130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 708 PM MDT THU AUG 29 1996 ...THE SEVERE THUNDERSTORM WATCH FOR SOUTHEAST WYOMING HAS BEEN CANCELED... THUNDERSTxORMS REMAINING OVER SOUTHEAST WYOMING HAVE DECREASED CONSIDERABLY IN INTENSITY. THE SEVERE THUNDERSTORM WATCH FOR NIOBRARA...PLATTE...GOSHEN...LARAMIE AND ALBANY COUNTIES OF SOUTHEAST WYOMING HAS BEEN CANCELED. WCJIN-WYSE-WYNE PAL
Nearby
Flash Flood Warnings in Nebraska, 1996Every flash flood warning in 1996
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.