Alert archive / Arizona / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 41, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 29, 1998, 4:13 PM MST for Cochise County, Arizona. It was in force for 32 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 29, 1998, 4:13 PM MST (23:13 UTC)
- Expired
- Jul 29, 1998, 4:45 PM MST
- In force
- 32 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 23:14 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 nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.2 hours before the alert went out and 113 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
- 2295 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- -18 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 KTUS 292314 RRA SVRTUS AZC003-292345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 413 PM MST WED JUL 29 1998 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN COCHISE COUNTY IN SOUTHEASTERN ARIZONA * UNTIL 445 PM MST * AT 411 PM MST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES NORTH NORTHWEST OF BENSON MOVING SOUTH AT 5 MPH. THIS STORM WAS CAPABLE OF PRODUCING WIND GUSTS TO 65 MPH...ONE INCH DIAMETER SIZE HAIL AND HEAVY RAIN. OKULSKI
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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 29, 2:30 PM MST, 1 hour 43 minutes earlier.
Area forecast discussion, Jul 29, 2:30 PM MST, 1 hour 43 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST WED JUL 29 1998 SYNOPSIS...MOISTURE HAS MOVED BACK INTO SOUTHEAST ARIZONA FOR CONTINUED AFTERNOON AND LATE NIGHT THUNDERSTORMS. SOME DRY AIR WILL MOVE INTO THE STATE FRIDAY AND SATURDAY DECREASING THE THUNDERSTORM THREAT. DISCUSSION...MAJOR FACTOR FOR TUS AND VALLEY STORMS IS THAT DEWPOINT IS GOING UP THIS AFTN AND THIS INDICATOR IS VERY RELIABLE FOR STORMS IN THE VALLEY. AIR ADVECTING IN FROM DESERT SEEMS TO HAVE PLENTY OF CAPE. CLOSE TO GOING WITH LIKELY/FFW FOR THIS EVENING BUT STILL SITTING ON THE FENCE SOME. STORMS DEVELOPING AS EXPECTED IN AREAS WHERE IT HAS CLEARED...ONE DOWN IN MEX WITH 65 VIL. SO WILL UP POPS TO HIGH SCT AND DROP TEMPS FOR THU IN ANTICIPATION OF BIG NIGHT. MODELS FCST IN DRYING AND HAVE GONE TO LOW MONSOON FOR FRI. KIND OF WONDER HOW WELL THE MODELS WILL DO WITH THE DRYING SINCE THEY DONT EVEN KNOW ABOUT THE CURRENT MSTR. STILL WONT CHANGE WORDING IN EXTENEDED. TREND SHOULD BE BACK UP BY SUN. TUS 544. HOLBROOK .TWC...NONE
In the hours before
Special weather statement, Jul 29, 12:45 PM MST, 3 hours 28 minutes before
AZZ019-029>035-300700-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST WED JUL 29 1998...THIS PRODUCT IS NOT UPDATED
*CONDITIONAL* *CONDITIONAL*
AREAL PROBABILITY RAIN GREATER THAN STORM
COUNTY COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 10 40 20 W 10
GRAHAM 40 10 40 20 W 10
GREENLEE 60 10 50 20 W 10
TUCSON/ERN PIMA 40 15 50 20 NW 10
TOHONO OODHAM 40 15 50 10 NW 10
WESTERN PIMA 40 15 30 10 NW 10
SOUTHEAST PINAL 30 15 30 10 NW 10
SANTA CRUZ 60 10 50 20 NW 10
SYNOPSIS...ENOUGH MOISTURE IN PLACE TO COMBINE WITH SURFACE HEATING
AND SOME UPPER LEVEL DYNAMICS FOR AN ABOVE NORMAL DAY. THREAT OF
BOTH SEVERE WINDS AND HEAVY RAIN.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12:45 PM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://NIMBO.WRH.NOAA.GOV/TUCSON/SWO/SWO.SHTML
***THERE WILL BE NO ACCOMPANYING GRAPHICS TODAY DUE TO COMPUTER
PROBLEMS***
END/CECSpecial weather statement, Jul 29, 12:45 PM MST, 3 hours 28 minutes before
AZZ019-029>035-300700-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST WED JUL 29 1998...THIS PRODUCT IS NOT UPDATED
*CONDITIONAL* *CONDITIONAL*
AREAL PROBABILITY RAIN GREATER THAN STORM
COUNTY COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 40 10 40 20 W 10
GRAHAM 40 10 40 20 W 10
GREENLEE 60 10 50 20 W 10
TUCSON/ERN PIMA 40 15 50 20 NW 10
TOHONO OODHAM 40 15 50 10 NW 10
WESTERN PIMA 40 15 30 10 NW 10
SOUTHEAST PINAL 30 15 30 10 NW 10
SANTA CRUZ 60 10 50 20 NW 10
SYNOPSIS...ENOUGH MOISTURE IN PLACE TO COMBINE WITH SURFACE HEATING
AND SOME UPPER LEVEL DYNAMICS FOR AN ABOVE NORMAL DAY. THREAT OF
BOTH SEVERE WINDS AND HEAVY RAIN.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT ANY ONE OF THE STORMS WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12:45 PM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://NIMBO.WRH.NOAA.GOV/TUCSON/SWO/SWO.SHTML
***THERE WILL BE NO ACCOMPANYING GRAPHICS TODAY DUE TO COMPUTER
PROBLEMS***
END/CECLocal storm report, Jul 29, 4:05 PM MST, 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
405 PM MST WED JUL 29 1998
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0650 PM SIERRA VISTA AZ WIND DAMAGE
07/28/98 COCHISE DOWNED POWER LINES NEAR
VETERANS MEMORIAL PARK
0655 PM SIERRA VISTA AZ WIND DAMAGE
07/28/98 COCHISE TREES BLOWN DOWN ON FRY
BLVD
0655 PM SIERRA VISTA AZ WIND DAMAGE
07/28/98 COCHISE MOBILE HOME ROOF TORN OFFThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 5:53 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 min |
| Jul 28, 6:30 PM MST | Flash Flood Warning | TWC | Cochise | 65 min |
| Jul 28, 6:38 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 min |
| Jul 28, 7:22 PM MST | Severe Thunderstorm Warning | TWC | Pima | 63 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.