Alert archive / Colorado / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 9, 1996, 2:15 AM MDT for Logan County, Colorado. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 9, 1996, 2:15 AM MDT (08:15 UTC)
- Expired
- May 9, 1996, 3:00 AM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 150 km from the middle of the area, began a volume at 08:15 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, 8.3 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
- 1808 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 2066 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 090813
SVRDEN
COC075-090900-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
215 AM MDT THU MAY 09 1996
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 300 AM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
LOGAN
INCLUDING THE FOLLOWING LOCATIONS
ATWOOD...CROOK...FLEMING...ILIFF...MERINO...PADRONI...
PROCTOR...ST PETERS AND STERLING
AT 211 AM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 5 MILES MILES SOUTHWEST OF ATWOOD ...OR ABOUT
6 MILES SOUTH OF STERLING.
THE STORM WAS MOVING EAST NORTHEAST AT 30 MPH.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
A TORNADO WATCH REMAINS IN EFFECT FOR NORTHEASTERN COLORADO
UNTIL 300AM MDT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE
OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.
LAT...LON 4047 10276 4045 10336 4095 10318 4086 10271
KLEYLAWhat forecasters said that day
The local office's own words before this severe thunderstorm 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, May 9, 12:25 AM MDT, 1 hour 50 minutes before
COZ042-044-48>50-090730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1225 AM MDT THU MAY 09 1996 ...TORNADO WATCH CONTINUES IN EFFECT UNTIL 3 AM FOR EXTREME NORTHEAST COLORADO... AT 1220 AM MDT DOPPLER RADAR CONTINED TO SHOW SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING OVER NORTHEAST COLORADO EAST OF A LINE FROM EAST OF BRIGGSDALE TO STRASBURG TO KIOWA. THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR STONEHAM IN EASTERN WELD COUNTY...NEAR AKRON AND JUST WEST OF LIMON. THESE THUNDERSTORMS WERE CAPABLE OF PRODUCING BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 30 MPH. KLEYLA
Special weather statement, May 9, 1:16 AM MDT, 59 minutes before
COZ042-044-48>50-090830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 118 AM MDT THU MAY 09 1996 ...TORNADO WATCH CONTINUES IN EFFECT UNTIL 3 AM FOR EXTREME NORTHEAST COLORADO... AT 115 AM MDT DOPPLER RADAR CONTINUED TO SHOW A LINE OF SCATTERED THUNDERSTORMS EAST OF A LINE FROM WEST OF STERLING TO FORT MORGAN TO EAST OF BYERS. THE STRONGEST THUNDERSTORMS WERE LOCATED 10 MILES WEST OF STERLING...10 MILES NORTH OF FORT MORGAN AND SOUTHEAST OF SHAMROCK IN EASTERN ADAMS COUNTY. THESE THUNDERSTORMS WERE CAPABLE OF PRODUCING VERY HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MPH. KLEYLA
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 7:15 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 45 min |
| May 8, 8:03 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 42 min |
| May 8, 8:55 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Weld | 50 min |
| May 8, 10:15 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 45 min |
| May 8, 11:10 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 50 min |
| May 9, 2:20 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 25 min |
| May 9, 2:50 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 25 min |
| May 9, 3:16 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 14 min |
| May 9, 3:36 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 24 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1996Every severe thunderstorm 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.