Alert archive / Colorado / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 1, NWS Pueblo, CO
NWS Pueblo, CO issued this severe thunderstorm warning at Apr 6, 1998, 4:27 PM MDT for Bent County, Colorado. It was in force for 63 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
- Apr 6, 1998, 4:27 PM MDT (22:27 UTC)
- Expired
- Apr 6, 1998, 5:30 PM MDT
- In force
- 63 min
- Issued by
- NWS Pueblo, CO
- Area
- Whole counties
County Bent County, CO
The radar
The Pueblo radar (KPUX), 112 km from the middle of the area, began a volume at 22:29 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 |
|---|---|---|---|
| Apr 6, 4:37 PM MDT | Hail 0.88 | Las Animas, 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, 10.5 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1812 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
866 WUUS1 KPUB 062231 RRA SVRPUB COC011-062330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PUEBLO CO 427 PM MDT MON APR 6 1998 * SEVERE THUNDERSTORM WARNING FOR BENT COUNTY IN SOUTHEASTERN COLORADO * UNTIL 530 PM MDT * SOME LOCATIONS AFFECTED FORT LYON THROUGH 440 PM MDT HASTY BY 450 PM MDT * AT 427 PM MDT RADAR SHOWED A SEVERE STORM 3 MILES NORTH OF FORT LYON MOVING EAST SOUTHEAST AT 15 MPH. AT THIS TIME...THE MOST LIKELY SEVERE WEATHER WITH THIS STORM IS LARGE HAIL AND DAMAGING WINDS. REMEMBER...SEVERE STORMS CAN PRODUCE TORNADOES WITH LITTLE WARNING. IF YOU ARE NEAR THIS SEVERE STORM...GO TO SHELTER IMMEDIATELY. JK/AH
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 Apr 6, 2:15 PM MDT, 2 hours 12 minutes earlier.
Area forecast discussion, Apr 6, 2:15 PM MDT, 2 hours 12 minutes before
SOUTH CENTRAL AND SOUTHEAST COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PUEBLO CO 200 PM MDT APR 6 1998 CHALLENGE FOR TODAY IS THE IMPACT OF THE NORTHWEST TEXAS SURFACE LOW AS IT WAITS FOR UPPER DYNAMICS. MODELS FORECAST UPPER IMPULSE TO INTENSIFY SURFACE LOW AND MOVE IT INTO CENTRAL PLAINS. AS LOW DEEPENS PRESSURE GRADIENT TIGHTENS UP AND ATMPOSPHERE DESTABILZES ENOUGH FOR SCATTERED SHOWERS AND THUNDERSTORM. DEEPENING OF SURFACE LOW WILL ALLOW HIGHER DEW POINTS TO WRAP AROUND INTO SOUTHEAST COLORADO WITH UPSLOPE WINDS THAT WILL KEEP CLOUDS IN UNTIL O6Z OR SO. BY 06Z AS LOW MOVES EAST NORTHERLY WINDS...COOLER AND DRIER...WILL HELP TO DECREASE CLOUDS OVER THE EASTERN MTNS AND PLAINS. SCATTERED SNOW SHOWERS MAY CONTINUE OVER SOUTHWEST MOUNTAINS. OVERNIGHT PERIOD WILL BE COOLER AS NORTHERLY FLOW ADVECTS TEMPERATURES THAT ARE 5 TO 10 DEGREES F COOLER THAN LAST NIGHT. WILL GO CLOSE TO GUIDANCE TEMPS BUT POPS APPEAR TOO" HIGH...MAY BE A REFLECTION OF THE 00Z TO 06Z PERIOD...RATHER THAN LATER PERIOD. WILL KEEP MENTION OF SNOW SHOWERS OVER MTNS ABOVE 8000FT AND RAIN SHOWERS OVER PLAINS UNTIL MIDNIGHT. FORTUNE
In the hours before
Special weather statement, Apr 6, 1:30 PM MDT, 2 hours 57 minutes before
COZ071-073-062035- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 130 PM MDT MON APR 6 1998 ...THUNDERSTORMS WILL MOVE ACROSS SOUTHEAST EL PASO COUNTY... A THUNDERSTORM HAS DEVELOPED RAPIDLY ACROSS NORTHERN PUEBLO COUNTY MOVING NORTHEAST ABOUT 6 MPH AND INTO SOUTHERN EL PASO COUNTY. THIS STORM WILL MOVE ACROSS SOUTHEAST EL PASO COUNTY BETWEEN 130 AND 300 PM REMAINING SOUTH OF TRUCKTON. SMALL HAIL..STRONG GUSTY WINDS AND DANGEROUS LIGHTNING ARE POSSIBLE AS THIS STORM MOVES ACROSS THE REGION.
Special weather statement, Apr 6, 1:30 PM MDT, 2 hours 57 minutes before
COZ071-073-062035- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 130 PM MDT MON APR 6 1998 ...THUNDERSTORMS WILL MOVE ACROSS SOUTHEAST EL PASO COUNTY... A THUNDERSTORM HAS DEVELOPED RAPIDLY ACROSS NORTHERN PUEBLO COUNTY MOVING NORTHEAST ABOUT 6 MPH AND INTO SOUTHERN EL PASO COUNTY. THIS STORM WILL MOVE ACROSS SOUTHEAST EL PASO COUNTY BETWEEN 130 AND 300 PM REMAINING SOUTH OF TRUCKTON. SMALL HAIL..STRONG GUSTY WINDS AND DANGEROUS LIGHTNING ARE POSSIBLE AS THIS STORM MOVES ACROSS THE REGION.
Special weather statement, Apr 6, 3:27 PM MDT, 1 hour before
COZ077>81-062230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 327 PM MDT MON APR 6 1998 ...THUNDERSTORMS RUMBLING OVER THE SOUTHEAST PLAINS... A CLUSTER OF THUNDERSTORMS WILL MOVE OVER EASTERN CROWLEY AND EASTERN OTERO AS WELL AS WESTERN KIOWA COUNTIES THROUGH 430 PM. ANOTHER CLUSTER OF THUNDERSTORMS WILL MOVE OVER CENTRAL KIOWA COUNTY THROUGH 430 PM AS WELL. THESE STORMS WILL BRING BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS TO THE AREA. AT 320 PM...RADAR SHOWED THE STORMS MOVING EAST 10 TO 20 MPH. IN ADDITION...THUNDERSTORMS WERE DEVELOPING OVER EASTERN LAS ANIMAS COUNTY. HAYNES
Special weather statement, Apr 6, 3:27 PM MDT, 1 hour before
COZ077>81-062230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PUEBLO CO 327 PM MDT MON APR 6 1998 ...THUNDERSTORMS RUMBLING OVER THE SOUTHEAST PLAINS... A CLUSTER OF THUNDERSTORMS WILL MOVE OVER EASTERN CROWLEY AND EASTERN OTERO AS WELL AS WESTERN KIOWA COUNTIES THROUGH 430 PM. ANOTHER CLUSTER OF THUNDERSTORMS WILL MOVE OVER CENTRAL KIOWA COUNTY THROUGH 430 PM AS WELL. THESE STORMS WILL BRING BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS TO THE AREA. AT 320 PM...RADAR SHOWED THE STORMS MOVING EAST 10 TO 20 MPH. IN ADDITION...THUNDERSTORMS WERE DEVELOPING OVER EASTERN LAS ANIMAS COUNTY. HAYNES
Nearby
Severe Thunderstorm Warnings in Colorado, 1998Every severe thunderstorm warning in 1998
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.