Alert archive / Colorado / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 107, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Jun 12, 2001, 6:51 PM MDT for Yuma County, Colorado. It was in force for 24 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
- Jun 12, 2001, 6:51 PM MDT (00:51 UTC)
- Expired
- Jun 12, 2001, 7:15 PM MDT
- In force
- 24 min
- Issued by
- NWS Goodland, KS
- Area
- Whole counties
County Yuma County, CO
The radar
The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 00:55 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 |
|---|---|---|---|
| Jun 12, 6:54 PM MDT | Thunderstorm Wind 52 E | Idalia, CO | The strong winds blew down 3 inch diameter tree limbs and knocked over a sprinkler system. |
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 00:00Z, 0.9 hours before the alert went out and 70 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
- 716 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 3451 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 2:39 PM MDT, 4 hours 12 minutes earlier.
Area forecast discussion, Jun 12, 2:39 PM MDT, 4 hours 12 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GOODLAND KS 239 PM MDT TUE JUN 12 2001 ...WL HAVE TO WATCH HI PLAINS THUNDERSTORM POTENTIAL FOR DAY 2... WL BLEND MODELS FOR THIS FORECAST PACKAGE AS PATTERN GETS A BIT INTERESTING. BETTER UPPER LVL DYNAMICS TO ARRIVE OVER GLD CWA TONIGHT. CONFIDENCE IS LOW FOR THUNDERSTORMS AT THIS TIME BASED ON CURRENT CONDITIONS...BUT WL INCLUDE 10-20 POPS IN 1ST PERIOD. PROBLEM TODAY IS THAT CONVECTIVE TEMPS NOT REACHED AND MID LVL CAP STILL IN PLACE. HOWEVER...THIS CAP SHOULD BE ERODED BY TONIGHT AS STRONGER WAVE APPROACHES FROM WSW. WITH STRONG FROPA AND LIFT CANNOT RULE OUT A FEW STORMS BY 06Z. OTHERWISE...EXPECT TO SEE INCREASING SLY SFC WINDS AS LOW DEEPENS TO W OF FA. TEMPS E TO REMAIN VERY MILD TNGT. MODELS IN AGREEMENT ON UPPER LVL SUPPORT MOVG E OF THE ROCKIES WEDNESDAY AFTN/EVE. SFC FRONT DOES NOT LOOK TO MOVE MUCH PAST CWA DURING THE DAY. LAPSE RATES STEEPEN DURING THE DAY WITH COLDER AIR MOVG ALOFT. THIS WL BE IN COMBINATION WITH THE LF QUADRANT OF 100+KT JET ROUNDING BASE OF TROUGH RESULTING IN IMPRESSIVE UVVS OVER THE HI PLAINS. MOISTURE WL BE SUFFICIENT TO FORCE UPWARD...SPCLY S AND E PARTS OF CWA. TIMING OF THIS ENERGY SUGGESTS W PARTS OF CWA COULD HAVE STRONG STORM DVLP BY MID AFTN ON WEDNESDAY. OUTSIDE OF THE NGM...MODELS LOOK SLOW TO BRING IN QPF AND ACTUALLY HOLD OFF UNTIL FA FALLS UNDER RR QUADRANT OF JET LATER WED NIGHT. WL NOT INCLUDE SVR WORDING AT THIS TIME AND LET MIDNIGHT SHIFT DETERMINE BASED ON EARLY MORNING PARAMETERS. PCPN CAN BE EXPECTED MOST AREAS WED NIGHT...THEREFORE MENTIONED LIKELY POPS. MID LVL SUBSIDENCE BEGINS TO PUSH INTO AREA BY 12Z THURSDAY WITH SYSTEM MOVG QUICKLY NE...SO WL NOT MENTION ANY POPS ON DAY 2. HOWEVER...MUCH COOLER WX IN STORE THURSDAY INTO FRIDAY AS SFC HIGH SITS OVER THE PLAINS. IN ADDITION...NOT MUCH WIND ANTICIPATED AFT WED. IN THE EXTENDED...WEEKEND COULD BE A CARBON COPY OF PAST FEW DAYS EXCEPT FOR SLGTLY COOLER DAYTIME TEMPS. UPPER LVL HEIGHTS BUILD AND COULD REDEVELOP CAP. WITH LACK OF DYNAMICS...WL KEEP SATURDAY DRY AS WELL. SFC BOUNDARY AND BETTER INSTABILITY FOR SUNDAY AND MONDAY COULD BE TRIGGER FOR ISOLD TO SCT STORMS DURING THE AFTN/EVE HRS...SO WL KEEP IN CHC FOR TSTMS THOSE DAYS. NO OTHER SIGNIFICANT CHANGES TO EXTENDED PERIOD AT THIS TIME. .GLD...NONE. KPL
The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 5:47 PM MDT | Severe Thunderstorm Warning | GLD | Dundy | 28 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2001Every severe thunderstorm warning in 2001
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.