Alert archive / Iowa / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 37, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 15, 1997, 6:42 PM CDT for Tama County, Iowa. It was in force for 33 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
- Jun 15, 1997, 6:42 PM CDT (23:42 UTC)
- Expired
- Jun 15, 1997, 7:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Tama County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 23:41 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 15, 1:30 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 15, 6:30 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.7 hours before the alert went out and 176 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
- 1379 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 152341 RRA
SVRDSM
IAC171-160015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
642 PM CDT SUN JUN 15 1997
* SEVERE THUNDERSTORM WARNING FOR
EASTERN TAMA COUNTY - CENTRAL IOWA
* UNTIL 715 PM CDT
* SOME AREAS AFFECTED
CLUTIER
VINING
DYSART
* AT 640 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHEAST
OF TAMA OR 65 MILES NORTHEAST OF DES MOINES MOVING NORTHEAST AT 35
MPH.
* THE STORM WILL BE BY DYSART BY 700 PM.
THIS IS A DANGEROUS STORM. DO NOT GO OUTDOORS.
A TORNADO WATCH IS ALSO IN EFFECT. REMEMBER...SEVERE THUNDERSTORMS CAN
AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
KUBINAWhat 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
Special weather statement, Jun 15, 1:29 PM CDT, 5 hours 13 minutes before
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-161200- CENTRAL IOWA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 130 PM CDT SUN JUN 15 1997 HAZARD -- A TORNADO WATCH HAS BEEN ISSUED FOR CENTRAL IOWA. THUNDERSTORMS WITH HEAVY RAIN DAMAGING WINDS CAN BE EXPECTED. LARGE HAIL AND TORNADOES POSSIBLE WITH SOME STORMS. TIMING AND AREA OF CONCERN -- BETWEEN 130 AND 7 PM OVER FORECAST AREA. METEOROLOGICAL COMMENTS -- A COLD FRONT WILL BE MOVING THROUGH FAIRLY UNSTABLE AIR WITH LIFTED INDICES OF -2 TO -5 AND MID TO UPPER 60S DEW- POINTS. STRONG LOW TO MID LEVEL WIND FIELDS WITH LITTLE DIRECTIONAL SHEAR WILL FAVOR STORMS DEVELOPING IN A SQUALL LINE WITH DAMAGING WINDS. CLOUD DEBRIS FROM LAST NIGHTS CONVECTION WEST OF THE STATE WILL HAMPER DAYTIME HEATING DELAYING THE DEVELOPMENT OF THUNDERSTORMS IN THESE CLOUDY AREAS. PRECAUTIONS -- EMERGENCY MANAGERS SHOULD BE READY TO DEPLOY SPOTTERS BY 2 PM OR WHEN THUNDERSTORMS BEGIN TO DEVELOP OR MOVE INTO THE AREA. REMEMBER TO PASS ALONG ALL REPORTS OF SEVERE WEATHER TO COUNTY DISPATCHERS AND THE NATIONAL WEATHER SERVICE. FAB
Special weather statement, Jun 15, 1:30 PM CDT, 5 hours 12 minutes before
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-161200- CENTRAL IOWA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 130 PM CDT SUN JUN 15 1997 HAZARD -- A TORNADO WATCH HAS BEEN ISSUED FOR CENTRAL IOWA. THUNDERSTORMS WITH HEAVY RAIN DAMAGING WINDS CAN BE EXPECTED. LARGE HAIL AND TORNADOES POSSIBLE WITH SOME STORMS. TIMING AND AREA OF CONCERN -- BETWEEN 130 AND 7 PM OVER FORECAST AREA. METEOROLOGICAL COMMENTS -- A COLD FRONT WILL BE MOVING THROUGH FAIRLY UNSTABLE AIR WITH LIFTED INDICES OF -2 TO -5 AND MID TO UPPER 60S DEW- POINTS. STRONG LOW TO MID LEVEL WIND FIELDS WITH LITTLE DIRECTIONAL SHEAR WILL FAVOR STORMS DEVELOPING IN A SQUALL LINE WITH DAMAGING WINDS. CLOUD DEBRIS FROM LAST NIGHTS CONVECTION WEST OF THE STATE WILL HAMPER DAYTIME HEATING DELAYING THE DEVELOPMENT OF THUNDERSTORMS IN THESE CLOUDY AREAS. PRECAUTIONS -- EMERGENCY MANAGERS SHOULD BE READY TO DEPLOY SPOTTERS BY 2 PM OR WHEN THUNDERSTORMS BEGIN TO DEVELOP OR MOVE INTO THE AREA. REMEMBER TO PASS ALONG ALL REPORTS OF SEVERE WEATHER TO COUNTY DISPATCHERS AND THE NATIONAL WEATHER SERVICE. FAB
Nearby
Severe Thunderstorm Warnings in Iowa, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.