Alert archive / Colorado / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 13, NWS Pueblo, CO

May 16, 1999Prowers County, Colorado

NWS Pueblo, CO issued this severe thunderstorm warning at May 16, 1999, 6:20 PM MDT for Prowers County, Colorado. It was in force for 60 min. 4 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: May 16, 1999, 6:20 PM MDT (00:20 UTC)
Expired: May 16, 1999, 7:20 PM MDT
In force: 60 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 00:23 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
May 16, 6:25 PM MDT	Hail 2	Lamar, CO
May 16, 6:30 PM MDT	Hail 3.75	Wiley, CO
May 16, 6:35 PM MDT	Hail 1	Wiley, CO
May 16, 6:45 PM MDT	Hail 2.5	Lamar, 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

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: 1319 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1847 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPUB 170025 COR
SVRPUB
COC099-170120-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED TYPOS
NATIONAL WEATHER SERVICE PUEBLO CO
620 PM MDT SUN MAY 16 1999

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

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

* UNTIL 720 PM MDT

* AT 618 PM MDT...RADAR SHOWED A SEVERE STORM 3 MILES NORTHWEST OF
  MCCLAVE OR 15 MILES NORTHWEST OF LAMAR. THIS DANGEROUS STORM IS
  MOVING EAST AT 20 MPH ALONG AND JUST NORTH OF HIWAY 50.

SOME LOCATIONS AFFECTED WILL BE WILEY BY 630 PM
NORTH OF LAMAR BY 640 PM.

THIS STORM HAS A PAST HISTORY OF PRODUCING DAMAGING WINDS AND HAIL
UP TO 2 INCHES IN DIAMETER. THIS IS A DANGEROUS STORM.

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.

ETP/HO



&

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.

NWS Pueblo, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 2:10 PM MDT, 4 hours 10 minutes earlier.

Area forecast discussion, May 16, 2:10 PM MDT, 4 hours 10 minutes before

SOUTH CENTRAL AND SOUTHEAST COLORADO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PUEBLO
210 PM MDT SUN MAY 16 1999

MAIN FORECAST CONCERN IS THE CHANCE FOR PRECIP TONIGHT.

LATEST WATER VAPOR SATELLITE IMAGE INDICATES UPPER TROUGH OVER
THE WESTERN U.S. MAKING RAPID EASTWARD PROGRESS THROUGH UTAH TODAY...
LENDING SUPPORT TO FASTER AVN/ETA SOLUTIONS. COLD FRONT THROUGH
MOST OF COLORADO AT 18Z...WITH LOW LEVEL FLOW BECOMING EASTERLY AND
A SLOW INCREASE IN MOISTURE. LOOK AT 12Z ETA/15Z RUC SUGGESTS AN
AXIS OF HIGHER CAPE DEVELOPING ALONG THE PALMER DIVIDE THIS
AFTERNOON...WHILE A SIGNIFICANT COUPLET OF UPPER DIVERGENCEG AND
700 MB CONVERGENCE MOVES OVER THE AREA AFTER 00Z. CURRENT FORECAST
WITH CHANCE OF SHOWERS AND THUNDERSTORMS ALONG AND EAST OF THE
MOUNTAINS LOOKS GOOD AND WONT CHANGE MUCH. UPPER TROUGH SWEEPS
EAST OF COLORADO BY EARLY MONDAY WITH DOWNWARD MOTION AND
LOWERING RH SPREADING OVER THE AREA. WILL REMOVE PRECIP CHANCES
FOR ALL AREAS AS A RESULT. NICE WARMUP TUESDAY AS UPPER FLOW
BECOMES ZONAL. GUIDANCE TEMPS LOOK OK THROUGH TUESDAY.

MODELS HINT AT MOISTURE RETURNING THROUGH NEW MEXICO TUESDAY AND
WEDNESDAY...WITH MRF THE ODD MAN OUT LATE IN THE WEEK CLOSING OFF
AN UPPER LOW OVER THE WEST COAST. WITH ENOUGH MOISTURE COULD SEE A
FEW SHOWERS OVER THE MOUNTAINS THURSDAY...BETTER CHANCE
AREAWIDE FRIDAY AS WESTERN TROUGH DEEPENS. SOME DRYLINE ACTIVITY
POSSIBLE WEDNESDAY/THURSDAY ALONG THE FAR EASTERN BORDER...THOUGH
APPEARS MOST ACTIVITY WILL REMAIN IN KANSAS.

.PUB...NONE.

PETERSEN

In the hours before

Local storm report, May 16, 4:49 PM MDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
449 PM MDT SUN MAY 16 1999

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

0435 PM    MANZANOLA                 CO    1 INCH HAIL
05/16/99   OTERO

0447 PM    MANZANOLA                 CO    2 INCH HAIL
05/16/99   OTERO

0447 PM    ROCKY FORD                CO    1.5 INCH HAIL
05/16/99   OTERO

Local storm report, May 16, 4:49 PM MDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
449 PM MDT SUN MAY 16 1999

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

0435 PM    MANZANOLA                 CO    1 INCH HAIL
05/16/99   OTERO

0447 PM    MANZANOLA                 CO    2 INCH HAIL
05/16/99   OTERO

0447 PM    ROCKY FORD                CO    1.5 INCH HAIL
05/16/99   OTERO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 6:00 PM MDT	Severe Thunderstorm Warning	PUB	Bent, Kiowa	60 min
May 16, 6:53 PM MDT	Severe Thunderstorm Warning	PUB	Kiowa, Prowers	62 min
May 16, 6:58 PM MDT	Severe Thunderstorm Warning	PUB	El Paso	47 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.