Alert archive / Colorado / Tornado Warnings in 1996
Tornado Warning 37, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 9, 1996, 2:53 PM MDT for Adams County, Denver County, Colorado. It was in force for 37 min. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1996, 2:53 PM MDT (20:53 UTC)
- Expired
- Jul 9, 1996, 3:30 PM MDT
- In force
- 37 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Adams County, CO, Denver County, CO
The radar
The Denver radar (KFTG), 6 km from the middle of the area, began a volume at 20:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 3:08 PM MDT | Tornado F0 | Denver Intl Airport, CO | |
| Jul 9, 3:08 PM MDT | Tornado F0 | Denver Intl Airport, CO | |
| Jul 9, 3:15 PM MDT | Tornado F0 | Denver Intl Airport, CO | |
| Jul 9, 3:25 PM MDT | Tornado F0 | Denver Intl Airport, CO | |
| Jul 9, 3:35 PM MDT | Tornado F0 | Denver Intl Airport, CO | |
| Jul 9, 3:35 PM MDT | Tornado F0 | Denver Intl Airport, CO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.9 hours before the alert went out and 118 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
- 287 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 6 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 KDEN 092054
TORDEN
COC001-031-092130-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
253 PM MDT TUE JUL 09 1996
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO
WARNING EFFECTIVE UNTIL 330 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEASTERN COLORADO
WESTERN ADAMS...NORTHEASTERN DENVER AND
INCLUDING THE FOLLOWING LOCATIONS
DENVER INTL AIRPORT...AND LOCHBUIE
AT 253 PM MDT WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM WITH A POSSIBLE TORNADO 8 MILES SOUTH OF HUDSON ...
OR ABOUT 30 MILES SOUTH OF GREELEY.
AMATEUR RADIO WEATHER SPOTTERS REPORTED A TORNADO HIT A FARMHOUSE NEAR
IN EXTREME SOUTHERN WELD COUNTY. M
THE STORM IS MOVING SOUTH AT 20 MPH.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH
YOUR HANDS.
LAT...LON 3983 10450 3983 10473 4008 10475 4008 10451What forecasters said that day
The local office's own words before this tornado 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, Jul 9, 11:18 AM MDT, 3 hours 35 minutes before
COZ030-032>050-100600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1125 AM MDT TUE JUL 09 1996 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: EXTENSIVE CLOUDS COVER NORTHEAST COLORADO AND MOISTURE IS QUITE DEEP THROUGH THE ATMOSPHERE. A WEAK UPPER LEVEL AREA OF LOW PRESSURE ALOFT OVER THE CENTRAL MOUNTAINS WILL MOVE SLOWLY EASTWARD. SKIES WILL REMAIN MOSTLY CLOUDY WITH WIDESPREAD SHOWERS AND THUNDERSTORMS DEVELOPING AS THE UPPER LEVEL LOW PRESSURE MOVES THROUGH THE AREA THIS AFTERNOON AND EVENING. A SURFACE BOUNDARY SEPARATING SOUTHEAST WINDS FROM LIGHT NORTHERLY WINDS EXTENDS FROM WESTERN ELBERT COUNTY NORTHWARD INTO WESTERN MORGAN AND NORTHEAST WELD COUNTIES. WITH THE HIGH MOISTURE LEVELS...SOME OF THE THUNDERSTORMS MAY PRODUCE 1 TO 2 INCHES OF RAIN...ESPECIALLY ACROSS THE EASTERN HALF OF NORTHEAST COLORADO WHERE SOUTHEAST WINDS WILL CONTINUE PUMPING IN HIGH MOISTURE LEVELS THROUGH THE AFTERNOON. WITH THE LACK OF SIGNIFICANT HEATING...THE ATMOSPHERE MAY NOT BECOME UNSTABLE ENOUGH TO GENERATE SEVERE THUNDERSTORMS...BUT AN ISOLATED THUNDERSTORM OR TWO COULD PRODUCE HAIL UP TO 1 INCH IN DIAMTETER. SPOTTER ACTIVATION IS NOT ANTICIPATED FOR THIS AFTERNOON...BUT REPORTS OF HEAVY RAINFALL WOULD BE APPRECIATED. IMY
Special weather statement, Jul 9, 11:37 AM MDT, 3 hours 16 minutes before
COZ044-091800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1138 AM MDT TUE JUL 9 1996 ...THUNDERSTORM IN MORGAN COUNTY... AT 1135 AM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAINS IN WEST CENTRAL MORGAN COUNTY... 6 MILES SOUTHWEST OF LOG LANE VILLAGE...OR ABOUT 10 MILES WEST OF FT MORGAN. THE STORM WAS MOVING NORTHEAST AT 20 MILES PER HOUR. PERSONS IN OR NEAR FORT MORGAN...LOG LANE VILLAGE...SNYDER...WELDONA AND WIGGINS SHOULD BE PREPARED FOR BRIEFLY HEAVY RAINS AND CLOUD TO GROUND LIGHTNING. RAIN AMOUNTS UP TO 1 INCH IN A 30 MINUTE PERIOD OF TIME MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. IMY
Special weather statement, Jul 9, 12:40 PM MDT, 2 hours 13 minutes before
COZ042-044-045-092000-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
1245 PM MDT TUE JUL 9 1996
AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT UNTIL 200
PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES
IN COLORADO
EASTERN ADAMS...EASTERN WELD...MORGAN...
AT 1240 PM....THE THUNDERSTORMS WITH VERY HEAVY RAINS CONTINUE ABOUT
5 MILES WEST OF FT MORGAN IN MORGAN COUNTY...IN NORTHEAST LARIMER
COUNTY ABOUT 5 MILES NORTH OF KEOTA OR ABOUT 35 MILES NORTHWEST OF
FT MORGAN...AND IN EASTERN ADAMS COUNTY NEAR SHAMROCK OR ABOUT 40
MILES EAST OF DENVER.
RADAR INDICATES RAINFALL AMOUNTS FROM 1 TO 2 INCHES HAVE SOAKED
THESE AREAS WITH ANOTHER INCH OF RAIN POSSIBLE BEFORE 200 PM.
EXCESSIVE RUNOFF FROM THE STORMS WITH THE VERY HEAVY RAINFALL WILL
CAUSE MINOR FLOODING OF SMALL CREEKS AND STREAMS AS WELL AS HIGHWAYS
AND COUNTY ROADS.
THE THUNDERSTORMS HAVE BECOME NUMEROUS IN THESE COUNTIES...BUT THE
RAINFALL HAS LIGHTENED UP SLIGHTLY. NUMEROUS SHOWERS AND
THUNDERSTORMS ARE EXPECTED ACROSS MUCH OF NORTHEAST COLORADO THIS
AFTERNOON.
IMYSpecial weather statement, Jul 9, 1:24 PM MDT, 1 hour 29 minutes before
COZ040-042-044-045-092000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 125 PM MDT TUE JUL 9 1996 AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT UNTIL 200 PM MDT FOR PEOPLE IN EASTERN ADAMS...EASTERN WELD AND MORGAN. AT 120 PM....NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUE IN NORTHEAST WELD...MORGAN AND EASTERN ADAMS COUNTIES. THE THUNDERSTORMS ARE PRODUCING MODERATE TO BRIEFLY HEAVY RAINS AS THEY MOVE SLOWLY TO THE NORTHEAST. A SPOTTER 3 MILES NORTHEAST OF WIGGINS REPORTED 2.10 INCHES OF RAIN AS OF 100 PM. DOPPLER RADAR INDICATES THAT RAINFALL AMOUNTS FROM 1 TO 2 1/2 INCHES HAS FALLEN IN THESE AREAS.. BUT THE HEAVIER THUNDERSTORMS AS ARE BEGINNING TO REDEVELOP FURTHER WEST AND SOUTH OF THE WHERE THE HEAVY RAINS HAVE OCCURRED. A BOUNDARY OF COOLER AIR WITH THESE THUNDERSTORMS EXTENDS FROM NEAR KEENSBURG TO BENNETT TO ELIZABETH. THIS BOUNDARY IS PUSHING WESTWARD AND COULD INITIATE NEW THUN DERSTORMS JUST EAST OF DENVER BY 230 PM. IMY
Special weather statement, Jul 9, 1:56 PM MDT, 57 minutes before
COZ040-042-044-045-092000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 200 PM MDT TUE JUL 9 1996 THE URBAN AND SMALL STREAM FLOOD ADVISORY FOR PEOPLE IN EASTERN ADAMS...EASTERN WELD AND MORGAN COUNTY HAS EXPIRED. AT 155 PM....SHOWERS AND THUNDERSTORMS WITH MODERATE RAINFALL CONTINUED OVER MORGAN AND NORTHEAST WELD COUNTIES...BUT THE THREAT OF HEAVY RAIN HAS ENDED FOR THE TIME BEING. HEAVIER THUNDERSTORMS WERE LOCATED IN EASTERN ADAMS AND EASTERN ARAPAHOE COUNTIES...BUT THE STORMS ARE DEVELOPING SLOWLY WESTWARD....SO NO ONE AREA IS RECEIVING A LONG PERIOD OF HEAVY RAINFALL. A BOUNDARY FROM EARLIER THUNDERSTORMS EXTENDS FROM NEAR PLATTEVILLE TO JUST EAST OF THE DENVER INTERNATIONAL AIRPORT SOUTHWARD INTO EXTREME NORTHWEST ELBERT COUNTY. THIS BOUNDARY IS PUSHING SLOWLY WESTWARD AND THUNDERSTORMS MAY DEVELOP ON THIS BOUNDARY IN EASTERN DENVER AND AURORA BETWEEN 230 AND 330 PM. THUNDERSTORMS THAT DEVELOP ALONG THIS BOUNDARY COULD DROP FROM 1/2 TO 1 INCH OF RAIN WITHIN A 30 MINUTE PERIOD. IMY
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 2:18 PM MDT | Tornado Warning | BOU | Weld | 27 min |
| Jul 9, 2:40 PM MDT | Tornado Warning | BOU | Elbert | 35 min |
| Jul 9, 2:46 PM MDT | Tornado Warning | BOU | Weld | 29 min |
| Jul 9, 3:12 PM MDT | Tornado Warning | BOU | Elbert | 33 min |
| Jul 9, 3:25 PM MDT | Tornado Warning | BOU | Adams, Denver | 35 min |
| Jul 9, 3:46 PM MDT | Tornado Warning | BOU | Elbert | 29 min |
| Jul 9, 3:56 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 34 min |
| Jul 9, 4:00 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 30 min |
| Jul 9, 4:16 PM MDT | Tornado Warning | BOU | Elbert | 29 min |
Nearby
Tornado Warnings in Colorado, 1996Every tornado warning in 1996Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.