Alert archive / Colorado / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 232, NWS Denver/Boulder, CO

August 1, 1996Logan County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 1, 1996, 2:22 PM MDT for Logan County, Colorado. It was in force for 9 hr. 2 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: Aug 1, 1996, 2:22 PM MDT (20:22 UTC)
Expired: Aug 1, 1996, 11:00 PM MDT
In force: 9 hr
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

County Logan County, CO

What was reported inside it

Time	Report	Where	Remark
Aug 1, 3:08 PM MDT	Hail 1.75	Fleming, CO
Aug 1, 3:28 PM MDT	Hail 1	Fleming, 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, 8.4 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 292 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 2092 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDEN 012023
SVRDEN
COC075-012100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
222 PM MDT THU AUG 1 1996

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...

IN NORTHEAST COLORADO
     NORTHEASTERN LOGAN

INCLUDING THE FOLLOWING LOCATIONS
     CROOK...PEETZ...PROCTOR AND TWIN BUTTES

AT 216 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 5 MILES EAST OF PEETZ...OR ABOUT 25 MILES
NORTHEAST OF STERLING.

THE STORM WAS MOVING SOUTHEAST AT 15 MILES PER HOUR...AND WILL MOVE 
NEAR PROCTOR BY 3 PM.

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.

GIMMESTAD

LAT...LON 4099 10271 4090 10268 4074 10287 4099 10318

What 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

Local storm report, Aug 1, 9:04 AM MDT, 5 hours 18 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
900 AM MDT THU AUG 1 1996

...STORM REPORT FOR JULY 31 1996...

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0315 PM    HUGO                      CO   1.75 INCH HAIL
07/31/96   LINCOLN

0328 PM    HUGO                      CO   1.75 INCH HAIL
07/31/96   LINCOLN

0655 PM    4 NE LIMON                CO   .75 INCH HAIL
07/31/96   LINCOLN

0725 PM    10 E NUNN                 CO   1.5 INCH HAIL
07/31/96   WELD                           60 MPH WINDS

0730 PM    7 E AULT                  CO   2.75 INCH HAIL
07/31/96   WELD

0745 PM    GALETON                   CO   2.75 INCH HAIL
07/31/96   WELD                           CORN CROP DAMAGED...TREE LIMBS
                                          DOWNED AND ROADS FLOODED

0757 PM    8 NE GREELEY              CO   TORNADO
07/31/96   WELD

0757 PM    6 E GALETON               CO   1.00 INCH HAIL
07/31/96   WELD

0806 PM    GILL                      CO   TORNADO
07/31/96   WELD

0821 PM    ROGGEN                    CO   TORNADO
07/31/96   WELD

0832 PM    8 S KERSEY                CO   TORNADO
07/31/96   WELD

0840 PM    8 E KEENESBURG            CO   TORNADO
07/31/96   WELD

0850 PM    15 SE ROGGEN              CO   .75 INCH HAIL
07/31/96   WELD                           60-80 MPH WINDS

0852 PM    ROGGEN                    CO   1.75 INCH HAIL
07/31/96   WELD

0930 PM    3 E BYERS                 CO   TORNADO
07/31/96   ARAPAHOE

0935 PM    10 NE BYERS               CO   TORNADO
07/31/96   ADAMS

0945 PM    STRASBURG                 CO   TORNADO
07/31/96   ADAMS

1009 PM    5 N DEERTRAIL             CO   TORNADO
07/31/96   ARAPAHOE

1030 PM    10 NNW LIMON              CO   .75 INCH HAIL
07/31/96   ELBERT/LINCOLN COUNTY LINE

1030 PM-   10 N LIMON                CO   1.75 INCH HAIL
1100 PM    LINCOLN                        60 MPH WIND GUST...HAIL
07/31/96                                  BROKE WINDOW...DENTED METAL
                                          SHED AND WIPED OUT A WHEAT
                                          FIELD

1035 PM    6 N LIMON                 CO   1.75 INCH HAIL
07/31/96   LINCOLN

1035 PM    3 E GALETON               CO   .75 INCH HAIL
07/31/96   WELD

1037 PM    LIMON                     CO   .75 INCH HAIL
07/31/96   LINCOLN

1040 PM    6 N GENOA                 CO   2.75 INCH HAIL
07/31/96   LINCOLN                        60 MPH WINDS

1044 PM    LIMON                     CO   70 MPH WINDS
07/31/96   LINCOLN

1048 PM    5 E LIMON                 CO   1.00 INCH HAIL
07/31/96   LINCOLN                        60 MPH WINDS

1123 PM    10 S HUGO                 CO   1.00 INCH HAIL
07/31/96   LINCOLN

1129 PM-   7 NE KARVAL               CO   1.00 INCH HAIL
1X130 PM    LINCOLN
07/31/96

1131 PM    15 S HUGO                 CO   .75 INCH HAIL
07/31/96   LINCOLN

KLEYLA/FMC

Special weather statement, Aug 1, 11:42 AM MDT, 2 hours 40 minutes before

COZ030-032>050-020600-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER COLORADO
1145 AM MDT THU AUG 1 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:  SEVERAL FACTORS FOR SEVERE WEATHER IN NORTHEASTERN COLORADO
ARE IN PLACE AGAIN TODAY.  LIKE YESTERDAY...THERE IS PLENTIFUL MOISTURE
OVER THE PLAINS...WITH SOMEWHAT DRIER AIR NEAR THE FOOTHILLS.  UPSLOPE
WINDS WILL BE DEVELOPING THIS AFTERNOON...BUT WILL BE WEAKER THAN
YESTERDAY.  WARM AIR ALOFT WILL DELAY THE ONSET OF STORMS UNTIL LATE
AFTERNOON AND LIMIT THEIR NUMBER...BUT WIDELY SCATTERED STORMS THAT DO
DEVELOP FROM GREELEY AND BYERS EAST WILL BE STRONG TO SEVERE.  THE WIN*D
PROFILE IS NOT AS FAVORABLE FOR TORNADOES TODAY...BUT THERE IS ENOUGH
SHEAR THAT AN ISOLATED TORNADO CANNOT BE RULED OUT.

SPOTTERS MAY BE NEEDED FROM LATE AFTERNOON THROUGH THE EVENING...MAINLY
FROM GREELEY AND LIMON EAST.

GIMMESTAD

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 6:39 PM MDT	Severe Thunderstorm Warning	BOU	Weld	4 hr
Jul 31, 6:39 PM MDT	Severe Thunderstorm Warning	BOU	Weld	51 min
Jul 31, 6:49 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	41 min
Jul 31, 7:28 PM MDT	Severe Thunderstorm Warning	BOU	Weld	47 min
Jul 31, 7:45 PM MDT	Tornado Warning	BOU	Weld	30 min
Jul 31, 7:51 PM MDT	Tornado Warning	BOU	Phillips	24 min
Jul 31, 7:57 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan	48 min
Jul 31, 8:13 PM MDT	Tornado Warning	BOU	Weld	32 min
Jul 31, 8:45 PM MDT	Tornado Warning	BOU	Adams, Weld	30 min
Jul 31, 8:50 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	55 min
Jul 31, 9:16 PM MDT	Tornado Warning	BOU	Adams, Arapahoe	44 min
Jul 31, 9:58 PM MDT	Tornado Warning	BOU	Arapahoe, Elbert	47 min
Jul 31, 10:18 PM MDT	Tornado Warning	BOU	Lincoln	42 min
Jul 31, 10:25 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	35 min
Jul 31, 10:54 PM MDT	Tornado Warning	BOU	Lincoln	51 min
Jul 31, 11:44 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	31 min
Aug 1, 2:56 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Phillips	49 min
Aug 1, 3:47 PM MDT	Severe Thunderstorm Warning	BOU	Washington	28 min
Aug 1, 4:13 PM MDT	Severe Thunderstorm Warning	BOU	Washington	47 min
Aug 1, 4:22 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	53 min
Aug 1, 4:39 PM MDT	Tornado Warning	BOU	Washington	21 min
Aug 1, 5:07 PM MDT	Tornado Warning	BOU	Washington	38 min
Aug 1, 5:26 PM MDT	Tornado Warning	BOU	Washington	34 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1996 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.