Alert archive / Wyoming / Flash Flood Warnings in 1996
Flash Flood Warning 8, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Sep 14, 1996, 8:06 PM MDT for Platte County, Wyoming. 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
- Sep 14, 1996, 8:06 PM MDT (02:06 UTC)
- Expired
- Sep 14, 1996, 11:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Platte County, WY
The radar
The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 02:10 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
Rapid City, SD (KUNR), launched 00:00Z, 2.1 hours before the alert went out and 274 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 777 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 42 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 150207 FFWCYS WYC031-150515- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOODING WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 806 PM MDT SAT SEP 14 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A FLASH FLOODING WARNING EFFECTIVE UNTIL 1115 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...SOUTHEASTERN PLATTE COUNTY AT 800 PM A SPOTTER 5 MILES SOUTHWEST OF CHUGWATER REPORTED TWO AND A QUARTER INCHES OF RAIN HAD FALLEN OVER THE PAST HOUR WITH SMALL HAIL COVERING THE GROUND. THIS IS ALONG CHUGWATER CREEK IN THE SOUTHEAST CORNER OF PLATTE COUNTY. THE CREEK WAS REPORTED RISING QUICKLY. RADAR INDICATED UP TO THREE INCHES OF RAIN HAS FALLEN ALONG CHUGWATER CREEK FROM 5 MILES SOUTHWEST OF CHUGWATER TO JUST EAST OF THE TOWN OF CHUGWATER OVER THE PAST FEW HOURS. PEOPLE ALONG CHUGWATER CREEK FROM SOUTHWEST OF THE TOWN OF CHUGWATER TO EAST OF CHUGWATER SHOULD BE PREPARED FOR FLASH FLOODING OVER THE NEXT FEW HOURS...IF IT IS NOT ALREADY OCCURRING. DO NOT DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES. MOVE TO HIGHER GROUND IT FLOOD WATERS THREATEN! BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGE|R OF FLOODING. COX WCJIN-WYSE &
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, Sep 14, 4:47 PM MDT, 3 hours 19 minutes before
WYZ065-066-067-142345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 446 PM MDT SAT SEP 14 1996 ...A COUPLE STRONG STORMS OVER PLATTE COUNTY... AT 440PM DOPPLER RADAR SHOWED A STRONG THUNDERSTORM JUST MOVING OVER WHEATLAND. ANOTHER STRONG STORM WAS 15 MILES WEST OF WHEATLAND OVER THE LARAMIE MOUNTAIN RANGE. OTHER LIGHTER THUNDERSTORMS WERE OVER MUCH OF PLATTE COUNTY AND NORTHERN AND FAR EAST ALBANY COUNTY. THE STORMS WERE MOVING TO THE NORTH AT 15 MILES AN HOUR. BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS SHOULD BE EXPECTED WITH THE STRONGEST STORMS. RAINFALL FROM THE STORM IN THE LARAMIE RANGE MAY CAUSE MINOR FLOODING OF CREEKS...STREAMS AND OTHER LOW LYING AREAS. WCJIN-WYSE COX
Special weather statement, Sep 14, 5:49 PM MDT, 2 hours 17 minutes before
WYZ059-060-065-066-067-150045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 548 PM MDT SAT SEP 14 1996 ...SEVERAL STRONG THUNDERSTORMS CONTINUE OVER PLATTE COUNTY... AT 540 PM RADAR CONTINUED TO SHOW SEVERAL STRONG THUNDERSTORMS OVER PLATTE COUNTY. ONE STORM WAS 10 MILES WEST OF GLENDO...A SECOND WAS 5 MILES EAST OF WHEATLAND AND A THIRD THUNDERSTORM WAS ONLY A FEW MILES SOUTH OF CHUGWATER. THE STORMS WERE MOVING TO THE NORTH AT 15 MILES AN HOUR. THE RADAR INDICATED RAINFALL AMOUNTS FROM A HALF TO ONE INCH WITH THE STORMS WEST OF GLENDO AND NEAR WHEATLAND. FLOODING OF A COUPLE CREEKS AND A LOW LYING AREA WAS REPORTED IN THE WHEATLAND AREA AT 530PM. LIGHT TO MODERATE THUNDERSTORMS WERE NOTED OVER MUCH OF PLATTE COUNTY...NORTHEAST ALBANY COUNTY AND EASTERN CONVERSE COUNTY. BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS SHOULD BE EXPECTED WITH THE STRONGEST STORMS. MINOR FLOODING OF STREAMS...CREEKS A.ND OTHER LOW LYING AREAS WILL OCCUR. REMEMBER...DO NOT CROSS A FLOODED AREA WHETHER IN A VEHICLE OR ON FOOT. CLIMB TO HIGHER GROUND QUICKLY IF YOU ENCOUNTER RAPIDLY RISING WATER. WCJIN-WYSE COX
Special weather statement, Sep 14, 7:01 PM MDT, 1 hour 5 minutes before
WYZ059-060-067-068-150200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 700 PM MDT SAT SEP 14 1996 ...A COUPLE HEAVY RAIN PRODUCING THUNDERSTORMS PERSIST OVER SOUTHEAST WYOMING... AT 640PM RADAR CONTINUED TO SHOW A COUPLE STRONG THUNDERSTORMS OVER SOUTHEAST WYOMING. ONE STORM WAS 5 MILES SOUTHEAST OF CHUGWATER IN PLATTE COUNTY. ANOTHER STORM WAS 30 MILES NORTHEAST OF DOUGLAS IN CONVERSE COUNTY. A SERIES OF STORMS SOUTHEAST OF CHUGWATER MAY HAVE DUMPED UP TO TWO INCHES OF RAIN IN CHUGWATER CREEK SOUTH AND EAST OF THE TOWN OF CHUGWATER. UP TO TWO INCHES OF RAINFALL WAS INDICATED OVER LIGHTNING CREEK IN CONVERSE COUNTY...ABOUT 10 MILES SOUTHEAST OF BILL. MINOR FLOODING ALONG BOTH CHUGWATER CREEK...EAST AND SOUTH OF THE TOWN OF CHUGWATER...AND LIGHTNING CREEK IS POSSIBLE. LIGHT TO MODERATE THUNDERSTORMS OVER EASTERN CONVERSE...AND NORTH AND FAR EAST PLATTE COUNTY WERE MOVING INTO NIOBRARA AND GOSHEN COUNTIES. THE STORMS WERE GENERALLY MOVING TO THE NORTHEAST AT 15 MILES AN HOUR. ONLY PEA SIZE HAIL HAS BEEN REPORTED WITH ANY OF THE STORMS. MAINLY THE STRONGEST STORMS HAVE BEEN PRODUCING VERY HEAVY RAIN. REMEMBER...DO NOT TRY TO CROSS A FLOODED AREA. CLIMB TO HIGHER GROUND QUICKLY IF YOU ENCOUNTER RAPIDLY RISING WATER. WCJIN-WYSE-WYNE COX
Special weather statement, Sep 14, 7:28 PM MDT, 38 minutes before
WYZ059-060-067-068-069-070-150230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 728 PM MDT SAT SEP 14 1996 ...STRONG THUNDERSTORMS PERSIST... AT 720PM DOPPLER RADAR SHOWED A STRONG THUNDERSTORM HAD JUST DEVELOPED ABOUT 5 MILES SOUTHWEST OF CHUGWATER. THIS STORM WILL REACH CHUGWATER ABOUT 730PM. RADAR ALSO SHOWED A STRONG THUNDERSTORM 30 MILES SOUTH OF CHEYENNE. THIS STORM WILL MOVE THROUGH THE SOUTH AND EAST PARTS OF THE CITY OF CHEYENNE AROUND 800PM. THE HEAVY RAIN FROM IT MAY CAUSE MINOR FLOODING...ESPECIALLY OF STREETS AND OTHER LOW LYING AREAS. THE STORMS HAVE BEEN GENERALLY MOVING TO THE NORTH AT 15 MILES AN HOUR. THE STRONG STORM EARLIER NORTH OF DOUGLAS HAS WEAKENED CONSIDERABLY AND WAS MOVING INTO NIOBRARA COUNTY. THE STRONG STORMS THIS EVENING HAVE BEEN PRODUCING ONE TO TWO INCHES OF RAIN QUICKLY BUT ONLY PEA SIZED HAIL. FLOODING IS STILL POSSIBLE ALONG CHUGWATER CREEK...SOUTH AND EAST OF THE TOWN OF CHUGWATER. THE RADAR INDICATED UP TO TWO INCHES OF RAIN MAY HAVE FALLEN THERE OVER THE PAST SEVERAL HOURS FROM A SERIES OF THUNDERSTORMS. WCJIN-WYSE-WYNE COX
Nearby
Flash Flood Warnings in Wyoming, 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.