Harrat Uwayrid

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 27.08°N
  • 37.25°E

  • 1920 m
    6298 ft

  • 231020
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Harrat Uwayrid.

The Global Volcanism Program has no Weekly Reports available for Harrat Uwayrid.

The Global Volcanism Program has no Bulletin Reports available for Harrat Uwayrid.

Basic Data

Volcano Number

Last Known Eruption



640 CE

1920 m / 6298 ft


Volcano Types

Volcanic field

Rock Types

Basalt / Picro-Basalt
Trachybasalt / Tephrite Basanite

Tectonic Setting

Continental crust (> 25 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The Harrat 'Uwayrid, located in NW Saudi Arabia along the Bedouin pilgrim route to Syria, contains young basaltic scoria and tuff cones and associated lava fields. The massive alkali olivine basaltic lava field reaches a height of 1920 m; it extends about 125 km in a NW-SE direction and is contiguous with the Harrat ar Rahat volcanic field to the NW. The Catalog of Active Volcanoes of the World (Neumann van Pandang, 1963a) indicated that an eruption in about 640 CE at Harrat 'Uwayrid may have been from either Hala-'l-Bedr or Hala-'l-'Ischia, or both. Bedouin legends say that Hala-'l-Bedr erupted fire and stones, killing herdsmen and their cattle and sheep.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Brown G F, Schmidt D L, Huffman A C Jr, 1984. Geology of the Arabian Peninsula western shield area. U S Geol Surv, Open-File Rpt, 84:203: 1-217.

Neumann van Padang M, 1963. Arabia and the Indian Ocean. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 16: 1-64.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0640 (?) Unknown Confirmed 2 Anthropology Hala-'l-Bedr, Hala-'l-'Ishqua or both

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


'Uweirizh, Harrat el- | 'Awayridh, Harrat el- | Nar, Harrat en-


Feature Name Feature Type Elevation Latitude Longitude
Asi, Hala-'l- Tuff cone 1500 m 27° 5' 0" N 37° 21' 0" E
Bedr, Hala-'l- Cone 1500 m 27° 15' 0" N 37° 12' 0" E
Enaz, Hala-'l- Cone 1900 m
Ishqua, Hala-'l-
    Ischdschea, Harret
Tuff cone 1700 m 27° 35' 0" N 36° 48' 0" E

Photo Gallery

The large dark wedge-shaped area pointing to the lower right near the center of this Space Shuttle image is Harrat 'Uwayrid, a major volcanic field in NW Saudi Arabia. Harrat 'Uwayrid lies on the Bedouin pilgrim route to Syria and contains young basaltic scoria and tuff cones. Bedouin legends say that Hala-'l-Bedr erupted fire and stones in 640 AD, killing herdsmen and their cattle and sheep. Another volcanic field, Harrat ar Rahah (upper left), lies to the NW, left of the small light-colored desert area at the upper left-center.

NASA Space Shuttle image STS37-152-84, 1991 (http://eol.jsc.nasa.gov/).

Smithsonian Sample Collections Database

There are no samples for Harrat Uwayrid in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites

Large Eruptions of Harrat Uwayrid Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.