Alert archive / Colorado / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 116, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 24, 2001, 5:43 PM MDT for Weld County, Colorado. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 24, 2001, 5:43 PM MDT (23:43 UTC)
- Expired
- Jul 24, 2001, 6:30 PM MDT
- In force
- 47 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Weld County, CO
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.7 hours before the alert went out and 125 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
- 187 J/kg
- Mixed-layer CIN
- -268 J/kg
- Mixed-layer LCL
- 1564 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 24, 3:00 PM MDT, 2 hours 43 minutes earlier.
Area forecast discussion, Jul 24, 3:00 PM MDT, 2 hours 43 minutes before
NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER COLORADO 300 PM MDT TUE JUL 24 2001 MDLS SHW THE FLO OF TROPICAL MONSOONAL MOISTURE FM MEX ACRS NM INTO CNTRL RCKYS WILL CONTINUE THRU PRD. BOTH NGM AND MESOETA SHW PRECIPITIBLE WATERS OVR AN INCH ALG WITH HI CAPES. NGM HAS THE HIEST CAPES LATE THIS AFTN AND AGN ON WED AFTN. MDLS ALSO KEEP LO LVL UPSLP FLO OVR HI PLAINS WHICH WILL KEEP AMS MOIST AT ALL LVLS. ALSO WK SHT WV WILL ADD TO INSTBLTY THIS EVE. WILL MENTION PSBL SVR ALG WITH PSBL HVY RAIN OVR NERN PLAINS THIS EVE. ANOTHER APPARENT SHT WV WED NGT BUT FCST UPR AIR SOUNDINGS WERE NOT AS SATURATED AS THIS EVE. ON THU NGT MDLS START TO MOVE WK UPR TROF ACRS AREA...SO WILL INCRS POPS TO LIKELY MNLY E OF MTNS. WK LO LVL UPSLP FLO WILL PERSIST GNLY THRU PRD. LTL CHNG XPCTD IN TEMPS BUT WITH HIR SFC DWPTS OVR HI PLAINS MIN TEMPS WILL BE LTL WRMR THAN MOS TEMP GDNC. GENLY FVR MESOETA FCST SFC TEMPS FOR MAX TEMPS OVR SUMWHT COOLER MOS TEMP GDNC. IN XTNDD PRD...MRF MOVES STG SHT WV ACRS STA ON FRI AS ANOTHER SYS WILL PRODUCE A GUD UPR TROF OVR PAC NW AND STG SHT WV MOVG ACRS NRN RCKYS ON SAT. DRIER WLY FLO ALF STARTING ON SUN WILL SHUNT TROPICAL MONSOONAL MSTR TO THE S BUT WITH PERSISTENT LO LVL UPSLP FLO E OF MTNS WILL KEEP THRT OF LATE DAY CONVECTION IN THRU PRD. TEMPS WILL BE NR OR BLO SEASONAL NORMS. GARD...WFOp BOULDER .DEN...NONE.
In the hours before
Special weather statement, Jul 24, 2:00 PM MDT, 3 hours 43 minutes before
COZ030>051-242200- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 200 PM MDT TUE JUL 24 2001 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: VERY MOIST AIR CONTINUES TO GRIP NORTHEASTERN COLORADO. THUNDERSTORMS THIS AFTERNOON WILL DEVELOP FIRST ALONG THE FOOTHILLS AS THE ATMOSPHERE CONTINUES TO DESTABILIZE. BY 3 PM...THE STORMS WILL MOVE INTO THE FRONT RANGE BRINING VERY HEAVY RAIN AND SMALL HAIL. HEAVY RAIN WILL BE POSSIBLE ACROSS THE METRO DURING RUSH HOUR AGAIN THIS AFTERNOON. ACROSS THE EASTERN PLAINS...THE STORMS WILL LAST WELL INTO THE EVENING. HAIL OVER THREE-QUARTERS OF AN INCH IS POSSIBLE EAST OF A STERLING TO A LIMON LINE THIS EVENING. SIMILAR WEATHER CONDITIONS ARE EXPECTED AGAIN TOMORROW. SPOTTER ACTIVATION MAY BE REQUIRED ON THE EASTERN PLAINS AFTER 5 PM TODAY.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 3:21 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 39 min |
| Jul 24, 3:58 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 47 min |
| Jul 24, 5:23 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 67 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; the sounding from the Mesonet's radiosonde archive.