Alert archive / Nebraska / Flash Flood Warnings in 1996
Flash Flood Warning 6, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Aug 29, 1996, 5:25 PM MDT for Cheyenne County, Nebraska. It was in force for 2 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, 5:25 PM MDT (23:25 UTC)
- Expired
- Aug 29, 1996, 7:30 PM MDT
- In force
- 2 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 23:29 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, 11.4 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
- 12 J/kg
- Mixed-layer CIN
- -393 J/kg
- Mixed-layer LCL
- 2160 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 28 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 292324 FFWCYS NEC033-300130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOODING WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 525 PM MDT THU AUG 29 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A FLASH FLOODING WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN THE NEBRASKA PANHANDLE ...ALL CHEYENNE COUNTY AT 520 PM MDT STRONG THUNDERSTORMS WERE LOCATED OVER SYDNEY. THIS THUNDERSTORM WAS NEARLY STATIONARY. HEAVY RAINS FROM THE THUNDERSTORMS WERE CAUSING URBAN FLOODING IN SYDNEY. FLOODING WAS REPORTED UNDER HIGHWAY UNDERPASSES AND OVER ONE AND A HALF INCHES OF RAIN WAS REPORTED IN 15 MINUTE INTERVALS. IF YOU ARE NEAR LODGEPOLE CREEK OR OTHER LOW LYING AREAS BE PREPARED TO MOVE TO HIGHER GROUND AS THE WATER RISES. DO NOT DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. LRE &
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, 2:46 PM MDT, 2 hours 39 minutes before
WYZ015-059-064>070>NEZ001>003-019-020-054-292130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 245 PM MDT THU AUG 29 1996 ...A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED FOR SOUTHEAST AND EAST CENTRAL WYOMING...AS WELL AS MUCH OF THE NEBRASKA PANHANDLE UNTIL 8 PM... THE AIRMASS OVER THE SOUTHEAST THIRD OF WYOMING AND THE NEBRASKA PANHANDLE HAS BECOME QUITE UNSTABLE THIS AFTERNOON. CONDITIONS HAVE BECOME FAVORABLE FOR STRONG AND POSSIBLY SEVERE STORMS TO DEVELOP... AND SO A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED UNTIL 8 PM. STRONGEST STORMS WERE LOCATED OVER SOUTHERN PLATTE COUNTY WYOMING AND ALSO IN MORRILL AND CHEYENNE COUNTIES IN NEBRASKA. PEOPLE IN AND NEAR THEj WATCH AREA SHOULD KEEP A CLOSE EYE ON WEATHER CONDITIONS IN YOUR AREA. BE PREPARED TO MOVE TO A SAFE INDOOR LOCATION IF THREATENING WEATHER APPROACHES. < WCJIN-WYSE-WYNE JAD
Special weather statement, Aug 29, 3:11 PM MDT, 2 hours 14 minutes before
NEZ021-292210- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 310 PM MDT THU AUG 29 1996 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE PANHANDLE OF NEBRASKA AND FOR SOUTHEAST WYOMING UNTIL 800 PM... AT 300 PM MDT...WEATHER RADAR INDICATED A STRONG THUNDERSTORM LOCATED 25 MILES NORTH OF SIDNEY. THIS THUNDERSTORM WAS MOVING VERY SLOWLY TO THE EAST. THIS THUNDERSTORMS WAS LIKELY PRODUCING SMALL HAIL...HEAVY RAIN AND DANG.EROUS LIGHTNING. THE HEAVY RAIN IS LIKELY PRODUCING PONDING OF WATER ON ROADS AND LOW LYING AREAS. LRE
Special weather statement, Aug 29, 3:21 PM MDT, 2 hours 4 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, 2 hours 2 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, 1 hour 29 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, 22 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
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 6:11 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 64 min |
| Aug 28, 6:33 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 57 min |
| Aug 28, 6:43 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 62 min |
| Aug 28, 6:49 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 56 min |
| Aug 28, 7:09 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 36 min |
| Aug 28, 7:29 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 61 min |
| Aug 28, 7:30 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 60 min |
| Aug 28, 7:48 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 57 min |
| Aug 28, 8:31 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 59 min |
| Aug 28, 8:40 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 65 min |
| Aug 29, 5:37 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 63 min |
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.