Alert archive / Colorado / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 64, NWS Pueblo, CO

July 2, 1999Prowers County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at Jul 2, 1999, 6:16 PM MDT for Prowers County, Colorado. It was in force for 59 min. 1 report 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 2, 1999, 6:16 PM MDT (00:16 UTC)
Expired: Jul 2, 1999, 7:15 PM MDT
In force: 59 min
Issued by: NWS Pueblo, CO
Area: Whole counties

County Prowers County, CO

The radar

The Pueblo radar (KPUX), 166 km from the middle of the area, began a volume at 00:20 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 2, 6:43 PM MDT	Hail 0.75	Granada, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 2, 2:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.3 hours before the alert went out and 220 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: 5891 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPUB 030012 RRA
SVRPUB
COC099-030115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
616 PM MDT FRI JUL 2 1999

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PROWERS COUNTY IN SOUTHEASTERN COLORADO

* UNTIL 715 PM MDT

* AT 610 PM MDT...RADAR SHOWED A SEVERE STORM 20 MILES SOUTH OF LAMAR
  MOVING NORTHEAST AT 30 MPH.

SOME LOCATIONS AFFECTED WILL BE HIGHWAY 287 SOUTH OF LAMAR AND OVER
OPEN COUNTRY SOUTH OF HIGHWAY 50 BETWEEN LAMAR AND HOLLY THROUGH 715
PM MDT.

AT THIS TIME...THE MOST LIKELY SEVERE WEATHER WITH THIS STORM IS
LARGE HAIL AND DAMAGING WINDS.  IF YOU ARE IN OR CLOSE TO THE
WARNED AREA GO TO SAFETY IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS.
A BASEMENT OFFERS THE BEST PROTECTION.  SEVERE STORMS CAN PRODUCE
TORNADOES WITH LITTLE WARNING.

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, Jul 2, 5:42 PM MDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
542 PM MDT FRI JUL 02 1999

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

0513 PM    2 S GRANADA               CO    WIND DAMAGE
07/02/99   PROWERS                         LARGE TREE LIMBS BROKEN
                                           OFF

0513 PM    HOLLY                     CO    WIND DAMAGE
07/02/99   PROWERS            ~             LARGE TREE LIMBS BROKEN

Local storm report, Jul 2, 5:42 PM MDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
542 PM MDT FRI JUL 02 1999

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

0513 PM    2 S GRANADA               CO    WIND DAMAGE
07/02/99   PROWERS                         LARGE TREE LIMBS BROKEN
                                           OFF

0513 PM    HOLLY                     CO    WIND DAMAGE
07/02/99   PROWERS            ~             LARGE TREE LIMBS BROKEN

Local storm report, Jul 2, 6:04 PM MDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
604 PM MDT FRI JUL 02 1999

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

0545 PM    4.5 SW PRITCHETT          CO    1 INCH HAIL
07/02/99   BACA

0600 PM    PRITCHETT                 CO    .75 INCH HAIL
07/02/99   BACA

Local storm report, Jul 2, 6:04 PM MDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
604 PM MDT FRI JUL 02 1999

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

0545 PM    4.5 SW PRITCHETT          CO    1 INCH HAIL
07/02/99   BACA

0600 PM    PRITCHETT                 CO    .75 INCH HAIL
07/02/99   BACA

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 6:29 PM MDT	Severe Thunderstorm Warning	PUB	Baca	61 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1999 Every severe thunderstorm warning in 1999

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.