Alert archive / Colorado / Flash Flood Warnings in 1995
Flash Flood Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jun 7, 1995, 11:59 PM MDT for Logan County, Weld County, Colorado. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 7, 1995, 11:59 PM MDT (05:59 UTC)
- Expired
- Jun 8, 1995, 3:00 AM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Logan County, CO, Weld County, CO
The radar
The Cheyenne radar (KCYS), 105 km from the middle of the area, began a volume at 06:01 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, 6.0 hours before the alert went out and 96 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
- 581 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1435 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 080601
FFWDEN
COC075-123-080900-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
1159 PM MDT WED JUN 07 1995
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING EFFECTIVE UNTIL 300 AM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEASTERN COLORADO
LOGAN AND WELD
AT 1156 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES THAT
RAINFALL AMOUNTS OF UP TO 4 INCHES HAVE OCCURRED IN PORTIONS OF THESE
COUNTIES WHICH WILL CAUSE FLASH FLOODING.
THE SHERIFF OFFICES IN BOTH WELD AND LOGAN COUNTIES CONTINUE TO
REPORT HEAVY RAINFALL WITH NUMEROUS REPORTS OF FLOODING OF LOW
LYING AREAS.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER
GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS
SHOULD TAKE IMMEDIATE PRECAUTIONS. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND
SEEK HIGHER GROUND.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
KLEYLA
LAT...LON 4065 10308 4063 10461 4080 10443 4091 10313
4065 10371What 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, Jun 7, 9:30 PM MDT, 2 hours 29 minutes before
COZ042>043-080400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 930 PM MDT WED JUN 07 1995 ...URBAN AND SMALL STREAM FLOOD ADVISORY EXPIRES... THE URBAN AND SMALL STREAM FLOOD ADVISORY FOR SOUTHERN AND CENTRAL WELD COUNTY WAS ALLOWED TO EXPIRE AT 9 PM. AT 925 PM...WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORMS WHICH PRODUCED LARGE HAIL...HEAVY RAINS AND A FEW TORNADOS HAD MOVED INTO NORTHERN MORGAN AND NORTHEAST WELD COUNTY. AN AUTOMATED WEATHER STATION IN GREELEY RECORDED ONE INCH OF RAINFALL BETWEEN 7 AND 8 PM. THE HEAVY RAINS DURING THE EVENING MAY HAVE FLOODED LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN COLORADO UNTIL 3 AM. DANKERS LAT...LON 4005 10421 4010 10495 4051 10486 4064 10413
Special weather statement, Jun 7, 11:45 PM MDT, 14 minutes before
COZ042>049-080645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1145 PM MDT WED JUN 07 1995 ...TORNADO WATCH CONTINUES IN EFFECT FOR PORTIONS OF NORTHEAST AND EAST-CENTRAL COLORADO UNTIL 3 AM... AT 1140 PM DOPPLER RADAR CONTINUED TO SHOW SCATTERED STRONG THUNDERSTORMS OCCURRING ACROSS PORTIONS OF NORTHEAST COLORADO. THE STRONGEST THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAIN...SMALL HAIL AND GUSTY WINDS WERE LOCATED NEAR STERLING...FORT MORGAN AND JUST NORTHEAST OF LIMON. IN ADDITION FLOODING OF LOW LYING AREAS WAS LIKELY OCCURRING IN SOME AREAS WHERE THE HEAVIER THUNDERSTORMS WERE LOCATED. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH. KLEYLA
Special weather statement, Jun 7, 11:46 PM MDT, 13 minutes before
COZ042>049-080645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1145 PM MDT WED JUN 07 1995 ...TORNADO WATCH CONTINUES IN EFFECT FOR PORTIONS OF NORTHEAST AND EAST-CENTRAL COLORADO UNTIL 3 AM... AT 1140 PM DOPPLER RADAR CONTINUED TO SHOW SCATTERED STRONG THUNDERSTORMS OCCURRING ACROSS PORTIONS OF NORTHEAST COLORADO. THE STRONGEST THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAIN...SMALL HAIL AND GUSTY WINDS WERE LOCATED NEAR S|TERLING...FORT MORGAN AND JUST NORTHEAST OF LIMON. IN ADDITION FLOODING OF LOW LYING AREAS WAS LIKELY OCCURRING IN SOME AREAS WHERE THE HEAVIER THUNDERSTORMS WERE LOCATED. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH. KLEYLA
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 6:30 PM MDT | Tornado Warning | BOU | Weld | 45 min |
| Jun 7, 7:15 PM MDT | Tornado Warning | BOU | Weld | 45 min |
| Jun 7, 7:56 PM MDT | Tornado Warning | BOU | Morgan, Weld | 49 min |
| Jun 7, 8:33 PM MDT | Tornado Warning | BOU | Morgan, Weld | 42 min |
| Jun 7, 9:45 PM MDT | Tornado Warning | BOU | Arapahoe, Elbert, Lincoln | 45 min |
| Jun 7, 9:45 PM MDT | Tornado Warning | BOU | Adams, Washington | 45 min |
| Jun 7, 10:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 45 min |
| Jun 7, 10:28 PM MDT | Tornado Warning | BOU | Logan, Washington | 32 min |
| Jun 7, 10:32 PM MDT | Tornado Warning | BOU | Adams, Arapahoe, Washington | 43 min |
| Jun 7, 11:29 PM MDT | Flash Flood Warning | BOU | Morgan | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 1995Every flash flood warning in 1995
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.